Backed out 3 changesets (bug 1639030) for MDA failures in dom/media/test/test_eme_autoplay.html. CLOSED TREE

Backed out changeset e614d160ab92 (bug 1639030)
Backed out changeset e93c2e3b1e62 (bug 1639030)
Backed out changeset c40a82e96834 (bug 1639030)

security/sandbox/chromium-shim/base/allocator/buildflags.h

@@ -15,6 +15,4 @@
 
 #include "build/buildflag.h"
 
-#define BUILDFLAG_INTERNAL_USE_TCMALLOC() (0)
-
 #endif  // BASE_ALLOCATOR_BUILDFLAGS_H_

security/sandbox/chromium-shim/base/debug/crash_logging.cpp

@@ -1,22 +0,0 @@
-/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
-/* vim: set ts=2 et sw=2 tw=80: */
-/* This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
-
-// This is a dummy version of base/debug/crash_logging.cc
-
-#include "base/debug/crash_logging.h"
-
-namespace base {
-namespace debug {
-
-CrashKeyString* AllocateCrashKeyString(const char name[],
-                                       CrashKeySize value_length) {
-  return nullptr;
-}
-
-void SetCrashKeyString(CrashKeyString* crash_key, base::StringPiece value) {}
-
-}  // namespace debug
-}  // namespace base

security/sandbox/chromium-shim/base/debug/stack_trace.h

@@ -4,24 +4,18 @@
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 
-// This is a dummy version of Chromium source file base/debug/stack_trace.h
-// to provide a dummy class StackTrace.
+// This is a dummy version of Chromium source file base/debug/stack_trace.h.
+// To provide a dummy class StackTrace required in base/win/scoped_handle.cc.
 
 #ifndef BASE_DEBUG_STACK_TRACE_H_
 #define BASE_DEBUG_STACK_TRACE_H_
 
-#include <iosfwd>
-
 namespace base {
 namespace debug {
 
 class BASE_EXPORT StackTrace {
  public:
   StackTrace() {};
-
-#if !defined(__UCLIBC__) & !defined(_AIX)
-  void OutputToStream(std::ostream*) const {}
-#endif
 };
 
 }  // namespace debug

security/sandbox/chromium-shim/base/feature_list.h

@@ -10,8 +10,6 @@
 #ifndef BASE_FEATURE_LIST_H_
 #define BASE_FEATURE_LIST_H_
 
-#include "base/macros.h"
-
 namespace base {
 
 // Specifies whether a given feature is enabled or disabled by default.

security/sandbox/chromium-shim/base/files/file_path.cpp

@@ -7,6 +7,8 @@
 
 #include "base/files/file_path.h"
 
+#include "mozilla/Assertions.h"
+
 namespace base {
 
 using StringType = FilePath::StringType;
@@ -16,41 +18,6 @@ namespace {
 
 const FilePath::CharType kStringTerminator = FILE_PATH_LITERAL('\0');
 
-// If this FilePath contains a drive letter specification, returns the
-// position of the last character of the drive letter specification,
-// otherwise returns npos.  This can only be true on Windows, when a pathname
-// begins with a letter followed by a colon.  On other platforms, this always
-// returns npos.
-StringPieceType::size_type FindDriveLetter(StringPieceType path) {
-#if defined(FILE_PATH_USES_DRIVE_LETTERS)
-  // This is dependent on an ASCII-based character set, but that's a
-  // reasonable assumption.  iswalpha can be too inclusive here.
-  if (path.length() >= 2 && path[1] == L':' &&
-      ((path[0] >= L'A' && path[0] <= L'Z') ||
-       (path[0] >= L'a' && path[0] <= L'z'))) {
-    return 1;
-  }
-#endif  // FILE_PATH_USES_DRIVE_LETTERS
-  return StringType::npos;
-}
-
-bool IsPathAbsolute(StringPieceType path) {
-#if defined(FILE_PATH_USES_DRIVE_LETTERS)
-  StringType::size_type letter = FindDriveLetter(path);
-  if (letter != StringType::npos) {
-    // Look for a separator right after the drive specification.
-    return path.length() > letter + 1 &&
-        FilePath::IsSeparator(path[letter + 1]);
-  }
-  // Look for a pair of leading separators.
-  return path.length() > 1 &&
-      FilePath::IsSeparator(path[0]) && FilePath::IsSeparator(path[1]);
-#else  // FILE_PATH_USES_DRIVE_LETTERS
-  // Look for a separator in the first position.
-  return path.length() > 0 && FilePath::IsSeparator(path[0]);
-#endif  // FILE_PATH_USES_DRIVE_LETTERS
-}
-
 }  // namespace
 
 FilePath::FilePath() = default;
@@ -70,148 +37,4 @@ FilePath& FilePath::operator=(const FilePath& that) = default;
 
 FilePath& FilePath::operator=(FilePath&& that) = default;
 
-// static
-bool FilePath::IsSeparator(CharType character) {
-  for (size_t i = 0; i < kSeparatorsLength - 1; ++i) {
-    if (character == kSeparators[i]) {
-      return true;
-    }
-  }
-
-  return false;
-}
-
-// libgen's dirname and basename aren't guaranteed to be thread-safe and aren't
-// guaranteed to not modify their input strings, and in fact are implemented
-// differently in this regard on different platforms.  Don't use them, but
-// adhere to their behavior.
-FilePath FilePath::DirName() const {
-  FilePath new_path(path_);
-  new_path.StripTrailingSeparatorsInternal();
-
-  // The drive letter, if any, always needs to remain in the output.  If there
-  // is no drive letter, as will always be the case on platforms which do not
-  // support drive letters, letter will be npos, or -1, so the comparisons and
-  // resizes below using letter will still be valid.
-  StringType::size_type letter = FindDriveLetter(new_path.path_);
-
-  StringType::size_type last_separator =
-      new_path.path_.find_last_of(kSeparators, StringType::npos,
-                                  kSeparatorsLength - 1);
-  if (last_separator == StringType::npos) {
-    // path_ is in the current directory.
-    new_path.path_.resize(letter + 1);
-  } else if (last_separator == letter + 1) {
-    // path_ is in the root directory.
-    new_path.path_.resize(letter + 2);
-  } else if (last_separator == letter + 2 &&
-             IsSeparator(new_path.path_[letter + 1])) {
-    // path_ is in "//" (possibly with a drive letter); leave the double
-    // separator intact indicating alternate root.
-    new_path.path_.resize(letter + 3);
-  } else if (last_separator != 0) {
-    // path_ is somewhere else, trim the basename.
-    new_path.path_.resize(last_separator);
-  }
-
-  new_path.StripTrailingSeparatorsInternal();
-  if (!new_path.path_.length())
-    new_path.path_ = kCurrentDirectory;
-
-  return new_path;
-}
-
-FilePath FilePath::BaseName() const {
-  FilePath new_path(path_);
-  new_path.StripTrailingSeparatorsInternal();
-
-  // The drive letter, if any, is always stripped.
-  StringType::size_type letter = FindDriveLetter(new_path.path_);
-  if (letter != StringType::npos) {
-    new_path.path_.erase(0, letter + 1);
-  }
-
-  // Keep everything after the final separator, but if the pathname is only
-  // one character and it's a separator, leave it alone.
-  StringType::size_type last_separator =
-      new_path.path_.find_last_of(kSeparators, StringType::npos,
-                                  kSeparatorsLength - 1);
-  if (last_separator != StringType::npos &&
-      last_separator < new_path.path_.length() - 1) {
-    new_path.path_.erase(0, last_separator + 1);
-  }
-
-  return new_path;
-}
-
-FilePath FilePath::Append(StringPieceType component) const {
-  StringPieceType appended = component;
-  StringType without_nuls;
-
-  StringType::size_type nul_pos = component.find(kStringTerminator);
-  if (nul_pos != StringPieceType::npos) {
-    without_nuls = StringType(component.substr(0, nul_pos));
-    appended = StringPieceType(without_nuls);
-  }
-
-  DCHECK(!IsPathAbsolute(appended));
-
-  if (path_.compare(kCurrentDirectory) == 0 && !appended.empty()) {
-    // Append normally doesn't do any normalization, but as a special case,
-    // when appending to kCurrentDirectory, just return a new path for the
-    // component argument.  Appending component to kCurrentDirectory would
-    // serve no purpose other than needlessly lengthening the path, and
-    // it's likely in practice to wind up with FilePath objects containing
-    // only kCurrentDirectory when calling DirName on a single relative path
-    // component.
-    return FilePath(appended);
-  }
-
-  FilePath new_path(path_);
-  new_path.StripTrailingSeparatorsInternal();
-
-  // Don't append a separator if the path is empty (indicating the current
-  // directory) or if the path component is empty (indicating nothing to
-  // append).
-  if (!appended.empty() && !new_path.path_.empty()) {
-    // Don't append a separator if the path still ends with a trailing
-    // separator after stripping (indicating the root directory).
-    if (!IsSeparator(new_path.path_.back())) {
-      // Don't append a separator if the path is just a drive letter.
-      if (FindDriveLetter(new_path.path_) + 1 != new_path.path_.length()) {
-        new_path.path_.append(1, kSeparators[0]);
-      }
-    }
-  }
-
-  new_path.path_.append(appended.data(), appended.size());
-  return new_path;
-}
-
-FilePath FilePath::Append(const FilePath& component) const {
-  return Append(component.value());
-}
-
-void FilePath::StripTrailingSeparatorsInternal() {
-  // If there is no drive letter, start will be 1, which will prevent stripping
-  // the leading separator if there is only one separator.  If there is a drive
-  // letter, start will be set appropriately to prevent stripping the first
-  // separator following the drive letter, if a separator immediately follows
-  // the drive letter.
-  StringType::size_type start = FindDriveLetter(path_) + 2;
-
-  StringType::size_type last_stripped = StringType::npos;
-  for (StringType::size_type pos = path_.length();
-       pos > start && IsSeparator(path_[pos - 1]);
-       --pos) {
-    // If the string only has two separators and they're at the beginning,
-    // don't strip them, unless the string began with more than two separators.
-    if (pos != start + 1 || last_stripped == start + 2 ||
-        !IsSeparator(path_[start - 1])) {
-      path_.resize(pos - 1);
-      last_stripped = pos;
-    }
-  }
-}
-
 } // namespace base

security/sandbox/chromium-shim/base/logging_buildflags.h

@@ -1,20 +0,0 @@
-/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
-/* vim: set ts=8 sts=2 et sw=2 tw=80: */
-/* This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
-
-// This is a copy of a file that is generated by the chromium build, with
-// only the build flags we require.
-
-// Generated by build/write_buildflag_header.py
-// From "//base:logging_buildflags"
-
-#ifndef BASE_LOGGING_BUILDFLAGS_H_
-#define BASE_LOGGING_BUILDFLAGS_H_
-
-#include "build/buildflag.h"
-
-#define BUILDFLAG_INTERNAL_ENABLE_LOG_ERROR_NOT_REACHED() (0)
-
-#endif  // BASE_LOGGING_BUILDFLAGS_H_

security/sandbox/chromium-shim/base/memory/shared_memory_tracker.h

@@ -24,9 +24,9 @@ class BASE_EXPORT SharedMemoryTracker {
     return instance;
   }
 
-  void IncrementMemoryUsage(const SharedMemoryMapping& mapping) {};
+  void IncrementMemoryUsage(const SharedMemory& shared_memory) {};
 
-  void DecrementMemoryUsage(const SharedMemoryMapping& mapping) {};
+  void DecrementMemoryUsage(const SharedMemory& shared_memory) {};
 
  private:
   SharedMemoryTracker() {};

security/sandbox/chromium-shim/base/metrics/histogram_macros.h

@@ -11,6 +11,7 @@
 #ifndef BASE_METRICS_HISTOGRAM_MACROS_H_
 #define BASE_METRICS_HISTOGRAM_MACROS_H_
 
-#define UMA_HISTOGRAM_ENUMERATION(name, sample) do { } while (0)
+#define UMA_HISTOGRAM_ENUMERATION(name, sample, enum_max) do { } while (0)
+#define SCOPED_UMA_HISTOGRAM_TIMER(name) do { } while (0)
 
 #endif  // BASE_METRICS_HISTOGRAM_MACROS_H_

security/sandbox/chromium-shim/base/observer_list.h

@@ -1,12 +0,0 @@
-/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
-/* vim: set ts=2 et sw=2 tw=80: */
-/* This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
-
-// This is a cut down version of //base/observer_list.h
-
-#ifndef BASE_OBSERVER_LIST_H_
-#define BASE_OBSERVER_LIST_H_
-
-#endif  // BASE_OBSERVER_LIST_H_

security/sandbox/chromium-shim/base/process/launch.h

@@ -1,25 +0,0 @@
-/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
-/* vim: set ts=8 sts=2 et sw=2 tw=80: */
-/* This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
-
-// This is a reduced version of Chromium's //base/process/launch.h
-// to satisfy compiler.
-
-#ifndef BASE_PROCESS_LAUNCH_H_
-#define BASE_PROCESS_LAUNCH_H_
-
-#include <vector>
-
-#include "base/environment.h"
-
-namespace base {
-
-#if defined(OS_WIN)
-typedef std::vector<HANDLE> HandlesToInheritVector;
-#endif
-
-}  // namespace base
-
-#endif  // BASE_PROCESS_LAUNCH_H_

security/sandbox/chromium-shim/base/process/memory_win.cpp

@@ -1,17 +0,0 @@
-/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
-/* vim: set ts=2 et sw=2 tw=80: */
-/* This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
-
-#include "base/process/memory.h"
-
-#include "mozilla/Assertions.h"
-
-namespace base {
-
-void TerminateBecauseOutOfMemory(size_t size) {
-  MOZ_CRASH("Hit base::TerminateBecauseOutOfMemory");
-}
-
-}  // namespace base

security/sandbox/chromium-shim/base/threading/scoped_blocking_call.h

@@ -35,8 +35,7 @@ namespace internal {
 
 class BASE_EXPORT ScopedBlockingCallWithBaseSyncPrimitives {
  public:
-  ScopedBlockingCallWithBaseSyncPrimitives(const Location& from_here,
-                                           BlockingType blocking_type) {}
+  ScopedBlockingCallWithBaseSyncPrimitives(BlockingType blocking_type) {};
   ~ScopedBlockingCallWithBaseSyncPrimitives() {};
 };
 

security/sandbox/chromium-shim/base/win/sdkdecls.h

@@ -330,30 +330,6 @@ DeriveAppContainerSidFromAppContainerName(
 #define PROC_THREAD_ATTRIBUTE_ALL_APPLICATION_PACKAGES_POLICY \
     ProcThreadAttributeValue (ProcThreadAttributeAllApplicationPackagesPolicy, FALSE, TRUE, FALSE)
 
-//
-// Define functions declared only when _WIN32_WINNT >= 0x0A00
-//
-
-WINBASEAPI
-BOOL
-WINAPI
-IsWow64Process2(
-    _In_ HANDLE hProcess,
-    _Out_ USHORT* pProcessMachine,
-    _Out_opt_ USHORT* pNativeMachine
-    );
-
-#endif // (_WIN32_WINNT < 0x0A00)
-
-#if defined(__MINGW32__)
-
-// winnt.h
-#define THREAD_DYNAMIC_CODE_ALLOW   1     // Opt-out of dynamic code generation.
-
-// Mingw uses an old version THREAD_INFORMATION_CLASS defined in winbase.h
-// where ThreadDynamicCodePolicy does not exist.
-#define ThreadDynamicCodePolicy static_cast<THREAD_INFORMATION_CLASS>(2)
-
-#endif // defined(__MINGW32__)
+#endif // (_WIN32_WINNT >= 0x0A00)
 
 #endif // _SECURITY_SANDBOX_BASE_SHIM_SDKDECLS_H_

security/sandbox/chromium-shim/base/win/win_util.cpp

@@ -1,42 +0,0 @@
-/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
-/* vim: set ts=2 et sw=2 tw=80: */
-/* This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
-
-// This is a partial implementation of Chromium's source file
-// base/win/win_util.cc
-
-#include "base/win/win_util.h"
-
-#include "base/logging.h"
-#include "base/strings/string_util.h"
-
-namespace base {
-namespace win {
-
-std::wstring GetWindowObjectName(HANDLE handle) {
-  // Get the size of the name.
-  std::wstring object_name;
-
-  DWORD size = 0;
-  ::GetUserObjectInformation(handle, UOI_NAME, nullptr, 0, &size);
-  if (!size) {
-    DPCHECK(false);
-    return object_name;
-  }
-
-  LOG_ASSERT(size % sizeof(wchar_t) == 0u);
-
-  // Query the name of the object.
-  if (!::GetUserObjectInformation(
-          handle, UOI_NAME, WriteInto(&object_name, size / sizeof(wchar_t)),
-          size, &size)) {
-    DPCHECK(false);
-  }
-
-  return object_name;
-}
-
-}  // namespace win
-}  // namespace base

security/sandbox/chromium-shim/base/win/win_util.h

@@ -1,26 +0,0 @@
-/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
-/* vim: set ts=2 et sw=2 tw=80: */
-/* This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
-
-// This is a partial implementation of Chromium's source file
-// base/win/win_util.h
-
-#ifndef BASE_WIN_WIN_UTIL_H_
-#define BASE_WIN_WIN_UTIL_H_
-
-#include <string>
-
-#include "base/base_export.h"
-
-namespace base {
-namespace win {
-
-// Returns the name of a desktop or a window station.
-BASE_EXPORT std::wstring GetWindowObjectName(HANDLE handle);
-
-}  // namespace win
-}  // namespace base
-
-#endif  // BASE_WIN_WIN_UTIL_H_

security/sandbox/chromium-shim/patches/after_update/add_WOW64_flags_to_allowed_registry_read_flags.patch

@@ -30,5 +30,5 @@ diff --git a/security/sandbox/chromium/sandbox/win/src/registry_policy.cc b/secu
  // |access| with the new value.
  NTSTATUS TranslateMaximumAllowed(OBJECT_ATTRIBUTES* obj_attributes,
                                   DWORD* access) {
-   NtOpenKeyFunction NtOpenKey = nullptr;
+   NtOpenKeyFunction NtOpenKey = NULL;
    ResolveNTFunctionPtr("NtOpenKey", &NtOpenKey);

security/sandbox/chromium-shim/patches/after_update/add_interception_logging.patch

@@ -132,7 +132,7 @@ diff --git a/security/sandbox/chromium/sandbox/win/src/filesystem_interception.c
        break;
  
 @@ -227,32 +246,39 @@ TargetNtQueryAttributesFile(NtQueryAttri
-     ResultCode code = CrossCall(ipc, IpcTag::NTQUERYATTRIBUTESFILE, name.get(),
+     ResultCode code = CrossCall(ipc, IPC_NTQUERYATTRIBUTESFILE_TAG, name.get(),
                                  attributes, file_info, &answer);
  
      if (SBOX_ALL_OK != code)
@@ -173,7 +173,7 @@ diff --git a/security/sandbox/chromium/sandbox/win/src/filesystem_interception.c
        break;
 @@ -284,16 +310,20 @@ NTSTATUS WINAPI TargetNtQueryFullAttribu
      CrossCallReturn answer = {0};
-     ResultCode code = CrossCall(ipc, IpcTag::NTQUERYFULLATTRIBUTESFILE,
+     ResultCode code = CrossCall(ipc, IPC_NTQUERYFULLATTRIBUTESFILE_TAG,
                                  name.get(), attributes, file_info, &answer);
  
      if (SBOX_ALL_OK != code)
@@ -213,7 +213,7 @@ diff --git a/security/sandbox/chromium/sandbox/win/src/filesystem_interception.c
        break;
 @@ -366,14 +398,15 @@ TargetNtSetInformationFile(NtSetInformat
      ResultCode code =
-         CrossCall(ipc, IpcTag::NTSETINFO_RENAME, file, io_status_buffer,
+         CrossCall(ipc, IPC_NTSETINFO_RENAME_TAG, file, io_status_buffer,
                    file_info_buffer, length, file_info_class, &answer);
  
      if (SBOX_ALL_OK != code)
@@ -249,7 +249,7 @@ diff --git a/security/sandbox/chromium/sandbox/win/src/handle_interception.cc b/
                                  DWORD desired_access,
                                  DWORD options) {
 @@ -29,17 +30,19 @@ ResultCode DuplicateHandleProxy(HANDLE s
-   ResultCode code = CrossCall(ipc, IpcTag::DUPLICATEHANDLEPROXY,
+   ResultCode code = CrossCall(ipc, IPC_DUPLICATEHANDLEPROXY_TAG,
                                source_handle, target_process_id,
                                desired_access, options, &answer);
    if (SBOX_ALL_OK != code)
@@ -652,64 +652,6 @@ diff --git a/security/sandbox/chromium/sandbox/win/src/registry_interception.cc
  }
  
  }  // namespace sandbox
-diff --git a/security/sandbox/chromium/sandbox/win/src/signed_interception.cc b/security/sandbox/chromium/sandbox/win/src/signed_interception.cc
---- a/security/sandbox/chromium/sandbox/win/src/signed_interception.cc
-+++ b/security/sandbox/chromium/sandbox/win/src/signed_interception.cc
-@@ -9,16 +9,17 @@
- #include "sandbox/win/src/crosscall_client.h"
- #include "sandbox/win/src/ipc_tags.h"
- #include "sandbox/win/src/policy_params.h"
- #include "sandbox/win/src/policy_target.h"
- #include "sandbox/win/src/sandbox_factory.h"
- #include "sandbox/win/src/sandbox_nt_util.h"
- #include "sandbox/win/src/sharedmem_ipc_client.h"
- #include "sandbox/win/src/target_services.h"
-+#include "mozilla/sandboxing/sandboxLogging.h"
- 
- namespace sandbox {
- 
- NTSTATUS WINAPI
- TargetNtCreateSection(NtCreateSectionFunction orig_CreateSection,
-                       PHANDLE section_handle,
-                       ACCESS_MASK desired_access,
-                       POBJECT_ATTRIBUTES object_attributes,
-@@ -37,16 +38,18 @@ TargetNtCreateSection(NtCreateSectionFun
-       break;
-     if (maximum_size)
-       break;
-     if (section_page_protection != PAGE_EXECUTE)
-       break;
-     if (allocation_attributes != SEC_IMAGE)
-       break;
- 
-+    mozilla::sandboxing::LogBlocked("NtCreateSection");
-+
-     // IPC must be fully started.
-     void* memory = GetGlobalIPCMemory();
-     if (!memory)
-       break;
- 
-     std::unique_ptr<wchar_t, NtAllocDeleter> path;
- 
-     if (!NtGetPathFromHandle(file_handle, &path))
-@@ -73,16 +76,17 @@ TargetNtCreateSection(NtCreateSectionFun
-     if (code != SBOX_ALL_OK)
-       break;
- 
-     if (!NT_SUCCESS(answer.nt_status))
-       break;
- 
-     __try {
-       *section_handle = answer.handle;
-+      mozilla::sandboxing::LogAllowed("NtCreateSection");
-       return answer.nt_status;
-     } __except (EXCEPTION_EXECUTE_HANDLER) {
-       break;
-     }
-   } while (false);
- 
-   // Fall back to the original API in all failure cases.
-   return orig_CreateSection(section_handle, desired_access, object_attributes,
 diff --git a/security/sandbox/chromium/sandbox/win/src/sync_interception.cc b/security/sandbox/chromium/sandbox/win/src/sync_interception.cc
 --- a/security/sandbox/chromium/sandbox/win/src/sync_interception.cc
 +++ b/security/sandbox/chromium/sandbox/win/src/sync_interception.cc

security/sandbox/chromium-shim/patches/after_update/allow_flash_temporary_files.patch

@@ -14,14 +14,14 @@ https://hg.mozilla.org/mozilla-central/rev/0f64b24c40c4
 diff --git a/security/sandbox/chromium/sandbox/win/src/filesystem_dispatcher.cc b/security/sandbox/chromium/sandbox/win/src/filesystem_dispatcher.cc
 --- a/security/sandbox/chromium/sandbox/win/src/filesystem_dispatcher.cc
 +++ b/security/sandbox/chromium/sandbox/win/src/filesystem_dispatcher.cc
-@@ -213,16 +213,25 @@ bool FilesystemDispatcher::NtQueryAttrib
+@@ -221,16 +221,25 @@ bool FilesystemDispatcher::NtQueryAttrib
    params[FileName::BROKER] = ParamPickerMake(broker);
  
    // To evaluate the policy we need to call back to the policy object. We
    // are just middlemen in the operation since is the FileSystemPolicy which
    // knows what to do.
    EvalResult result =
-       policy_base_->EvalPolicy(IpcTag::NTQUERYATTRIBUTESFILE, params.GetBase());
+       policy_base_->EvalPolicy(IPC_NTQUERYATTRIBUTESFILE_TAG, params.GetBase());
  
 +  // If the policies forbid access (any result other than ASK_BROKER),
 +  // then check for user-granted access to file.
@@ -40,14 +40,14 @@ diff --git a/security/sandbox/chromium/sandbox/win/src/filesystem_dispatcher.cc
                                                     information, &nt_status)) {
      ipc->return_info.nt_status = STATUS_ACCESS_DENIED;
      return true;
-@@ -253,16 +262,25 @@ bool FilesystemDispatcher::NtQueryFullAt
+@@ -261,16 +270,25 @@ bool FilesystemDispatcher::NtQueryFullAt
    params[FileName::BROKER] = ParamPickerMake(broker);
  
    // To evaluate the policy we need to call back to the policy object. We
    // are just middlemen in the operation since is the FileSystemPolicy which
    // knows what to do.
    EvalResult result = policy_base_->EvalPolicy(
-       IpcTag::NTQUERYFULLATTRIBUTESFILE, params.GetBase());
+       IPC_NTQUERYFULLATTRIBUTESFILE_TAG, params.GetBase());
  
 +  // If the policies forbid access (any result other than ASK_BROKER),
 +  // then check for user-granted access to file.
@@ -66,14 +66,14 @@ diff --git a/security/sandbox/chromium/sandbox/win/src/filesystem_dispatcher.cc
            &nt_status)) {
      ipc->return_info.nt_status = STATUS_ACCESS_DENIED;
      return true;
-@@ -306,16 +324,26 @@ bool FilesystemDispatcher::NtSetInformat
+@@ -316,16 +334,26 @@ bool FilesystemDispatcher::NtSetInformat
    params[FileName::BROKER] = ParamPickerMake(broker);
  
    // To evaluate the policy we need to call back to the policy object. We
    // are just middlemen in the operation since is the FileSystemPolicy which
    // knows what to do.
    EvalResult result =
-       policy_base_->EvalPolicy(IpcTag::NTSETINFO_RENAME, params.GetBase());
+       policy_base_->EvalPolicy(IPC_NTSETINFO_RENAME_TAG, params.GetBase());
  
 +  // If the policies forbid access (any result other than ASK_BROKER),
 +  // then check for user-granted write access to file.  We only permit
@@ -96,7 +96,7 @@ diff --git a/security/sandbox/chromium/sandbox/win/src/filesystem_dispatcher.cc
 diff --git a/security/sandbox/chromium/sandbox/win/src/filesystem_interception.cc b/security/sandbox/chromium/sandbox/win/src/filesystem_interception.cc
 --- a/security/sandbox/chromium/sandbox/win/src/filesystem_interception.cc
 +++ b/security/sandbox/chromium/sandbox/win/src/filesystem_interception.cc
-@@ -227,19 +227,16 @@ TargetNtQueryAttributesFile(NtQueryAttri
+@@ -223,19 +223,16 @@ NTSTATUS WINAPI TargetNtQueryAttributesF
                                   sizeof(FILE_BASIC_INFORMATION));
  
      uint32_t broker = BROKER_FALSE;
@@ -105,18 +105,18 @@ diff --git a/security/sandbox/chromium/sandbox/win/src/filesystem_interception.c
      params[FileName::NAME] = ParamPickerMake(name_ptr);
      params[FileName::BROKER] = ParamPickerMake(broker);
  
--    if (!QueryBroker(IpcTag::NTQUERYATTRIBUTESFILE, params.GetBase()))
+-    if (!QueryBroker(IPC_NTQUERYATTRIBUTESFILE_TAG, params.GetBase()))
 -      break;
 -
      SharedMemIPCClient ipc(memory);
      CrossCallReturn answer = {0};
-     ResultCode code = CrossCall(ipc, IpcTag::NTQUERYATTRIBUTESFILE, name.get(),
+     ResultCode code = CrossCall(ipc, IPC_NTQUERYATTRIBUTESFILE_TAG, name.get(),
                                  attributes, file_info, &answer);
  
      if (SBOX_ALL_OK != code)
        break;
  
-@@ -292,19 +289,16 @@ NTSTATUS WINAPI TargetNtQueryFullAttribu
+@@ -290,19 +287,16 @@ NTSTATUS WINAPI TargetNtQueryFullAttribu
                                   sizeof(FILE_NETWORK_OPEN_INFORMATION));
  
      uint32_t broker = BROKER_FALSE;
@@ -125,18 +125,18 @@ diff --git a/security/sandbox/chromium/sandbox/win/src/filesystem_interception.c
      params[FileName::NAME] = ParamPickerMake(name_ptr);
      params[FileName::BROKER] = ParamPickerMake(broker);
  
--    if (!QueryBroker(IpcTag::NTQUERYFULLATTRIBUTESFILE, params.GetBase()))
+-    if (!QueryBroker(IPC_NTQUERYFULLATTRIBUTESFILE_TAG, params.GetBase()))
 -      break;
 -
      SharedMemIPCClient ipc(memory);
      CrossCallReturn answer = {0};
-     ResultCode code = CrossCall(ipc, IpcTag::NTQUERYFULLATTRIBUTESFILE,
+     ResultCode code = CrossCall(ipc, IPC_NTQUERYFULLATTRIBUTESFILE_TAG,
                                  name.get(), attributes, file_info, &answer);
  
      if (SBOX_ALL_OK != code)
        break;
  
-@@ -374,19 +368,16 @@ TargetNtSetInformationFile(NtSetInformat
+@@ -369,19 +363,16 @@ NTSTATUS WINAPI TargetNtSetInformationFi
        break;
  
      uint32_t broker = BROKER_FALSE;
@@ -145,7 +145,7 @@ diff --git a/security/sandbox/chromium/sandbox/win/src/filesystem_interception.c
      params[FileName::NAME] = ParamPickerMake(name_ptr);
      params[FileName::BROKER] = ParamPickerMake(broker);
  
--    if (!QueryBroker(IpcTag::NTSETINFO_RENAME, params.GetBase()))
+-    if (!QueryBroker(IPC_NTSETINFO_RENAME_TAG, params.GetBase()))
 -      break;
 -
      InOutCountedBuffer io_status_buffer(io_status, sizeof(IO_STATUS_BLOCK));

security/sandbox/chromium-shim/patches/after_update/allow_rules_for_network_drive_and_non_file_devices.patch

@@ -12,7 +12,7 @@ https://hg.mozilla.org/mozilla-central/rev/c70d06fa5302
 diff --git a/security/sandbox/chromium/sandbox/win/src/win_utils.cc b/security/sandbox/chromium/sandbox/win/src/win_utils.cc
 --- a/security/sandbox/chromium/sandbox/win/src/win_utils.cc
 +++ b/security/sandbox/chromium/sandbox/win/src/win_utils.cc
-@@ -194,61 +194,66 @@ bool ResolveRegistryName(std::wstring na
+@@ -190,62 +190,67 @@ bool ResolveRegistryName(base::string16 
  
    return false;
  }
@@ -22,12 +22,12 @@ diff --git a/security/sandbox/chromium/sandbox/win/src/win_utils.cc b/security/s
  //    \Device\HarddiskVolume0\some\foo\bar
  //    \??\HarddiskVolume0\some\foo\bar
 +//    \??\UNC\SERVER\Share\some\foo\bar
- DWORD IsReparsePoint(const std::wstring& full_path) {
+ DWORD IsReparsePoint(const base::string16& full_path) {
    // Check if it's a pipe. We can't query the attributes of a pipe.
    if (IsPipe(full_path))
      return ERROR_NOT_A_REPARSE_POINT;
  
-   std::wstring path;
+   base::string16 path;
    bool nt_path = IsNTPath(full_path, &path);
    bool has_drive = StartsWithDriveLetter(path);
    bool is_device_path = IsDevicePath(path, &path);
@@ -37,13 +37,13 @@ diff --git a/security/sandbox/chromium/sandbox/win/src/win_utils.cc b/security/s
  
 -  bool added_implied_device = false;
    if (!has_drive) {
--    path = std::wstring(kNTDotPrefix) + path;
+-    path = base::string16(kNTDotPrefix) + path;
 -    added_implied_device = true;
 +    // Add Win32 device namespace prefix, required for some Windows APIs.
 +    path.insert(0, kNTDotPrefix);
    }
  
--  std::wstring::size_type last_pos = std::wstring::npos;
+-  base::string16::size_type last_pos = base::string16::npos;
 -  bool passed_once = false;
 +  // Ensure that volume path matches start of path.
 +  wchar_t vol_path[MAX_PATH];
@@ -73,6 +73,7 @@ diff --git a/security/sandbox/chromium/sandbox/win/src/win_utils.cc b/security/s
 -            (path.rfind(L'\\') == kNTDotPrefixLen - 1)) {
 -          break;
 -        }
+         NOTREACHED_NT();
          return error;
        }
      } else if (FILE_ATTRIBUTE_REPARSE_POINT & attributes) {
@@ -93,12 +94,12 @@ diff --git a/security/sandbox/chromium/sandbox/win/src/win_utils.cc b/security/s
  // we'll get from |handle| will be \device\harddiskvolume1\some\foo\bar.
  bool SameObject(HANDLE handle, const wchar_t* full_path) {
    // Check if it's a pipe.
-@@ -258,63 +263,67 @@ bool SameObject(HANDLE handle, const wch
-   std::wstring actual_path;
+@@ -256,63 +261,67 @@ bool SameObject(HANDLE handle, const wch
+   base::string16 actual_path;
    if (!GetPathFromHandle(handle, &actual_path))
      return false;
  
-   std::wstring path(full_path);
+   base::string16 path(full_path);
    DCHECK_NT(!path.empty());
  
    // This may end with a backslash.
@@ -118,7 +119,7 @@ diff --git a/security/sandbox/chromium/sandbox/win/src/win_utils.cc b/security/s
    bool has_drive = StartsWithDriveLetter(path);
  
    if (!has_drive && nt_path) {
-     std::wstring simple_actual_path;
+     base::string16 simple_actual_path;
 -    if (!IsDevicePath(actual_path, &simple_actual_path))
 -      return false;
 -
@@ -186,5 +187,5 @@ diff --git a/security/sandbox/chromium/sandbox/win/src/win_utils.cc b/security/s
  
  // Just make a best effort here.  There are lots of corner cases that we're
  // not expecting - and will fail to make long.
- bool ConvertToLongPath(std::wstring* native_path,
-                        const std::wstring* drive_letter) {
+ bool ConvertToLongPath(base::string16* native_path,
+                        const base::string16* drive_letter) {

security/sandbox/chromium-shim/patches/after_update/arm64_set_LoaderThreads.patch

@@ -6,10 +6,32 @@
 # Parent  5ef34aa8c8918649528048dd60907862a4355e29
 Bug 1515088 Part 2: Set LoaderThreads to 1 in the RTL_USER_PROCESS_PARAMETERS structure on child process start-up. r=aklotz
 
+diff --git a/security/sandbox/chromium/sandbox/win/src/nt_internals.h b/security/sandbox/chromium/sandbox/win/src/nt_internals.h
+--- a/security/sandbox/chromium/sandbox/win/src/nt_internals.h
++++ b/security/sandbox/chromium/sandbox/win/src/nt_internals.h
+@@ -312,16 +312,18 @@ typedef enum _PROCESSINFOCLASS {
+ // Partial definition only.
+ typedef struct _PEB {
+   BYTE InheritedAddressSpace;
+   BYTE ReadImageFileExecOptions;
+   BYTE BeingDebugged;
+   BYTE SpareBool;
+   PVOID Mutant;
+   PVOID ImageBaseAddress;
++  PVOID Ldr;
++  PVOID ProcessParameters;
+ } PEB, *PPEB;
+ 
+ typedef LONG KPRIORITY;
+ 
+ typedef struct _PROCESS_BASIC_INFORMATION {
+   union {
+     NTSTATUS ExitStatus;
+     PVOID padding_for_x64_0;
 diff --git a/security/sandbox/chromium/sandbox/win/src/win_utils.cc b/security/sandbox/chromium/sandbox/win/src/win_utils.cc
 --- a/security/sandbox/chromium/sandbox/win/src/win_utils.cc
 +++ b/security/sandbox/chromium/sandbox/win/src/win_utils.cc
-@@ -456,20 +456,21 @@ bool GetNtPathFromWin32Path(const std::w
+@@ -453,20 +453,21 @@ bool GetNtPathFromWin32Path(const base::
    bool rv = GetPathFromHandle(file, nt_path);
    ::CloseHandle(file);
    return rv;
@@ -33,7 +55,7 @@ diff --git a/security/sandbox/chromium/sandbox/win/src/win_utils.cc b/security/s
        ::WriteProcessMemory(child_process, address, buffer, length, &written) &&
        (length == written);
  
-@@ -544,16 +545,40 @@ void* GetProcessBaseAddress(HANDLE proce
+@@ -511,16 +512,40 @@ void* GetProcessBaseAddress(HANDLE proce
                             &bytes_read) ||
        (sizeof(magic) != bytes_read)) {
      return nullptr;
@@ -51,7 +73,7 @@ diff --git a/security/sandbox/chromium/sandbox/win/src/win_utils.cc b/security/s
 +  // field so there is a, probably small, risk that it might change or move in
 +  // the future. In order to slightly guard against that we only update if the
 +  // value is currently 0.
-+  auto processParameters = reinterpret_cast<uint8_t*>(peb.ProcessParameters);
++  uint8_t* processParameters = static_cast<uint8_t*>(peb.ProcessParameters);
 +  const uint32_t loaderThreadsOffset = 0x40c;
 +  uint32_t maxLoaderThreads = 0;
 +  BOOL memoryRead = ::ReadProcessMemory(
@@ -69,16 +91,16 @@ diff --git a/security/sandbox/chromium/sandbox/win/src/win_utils.cc b/security/s
    return base_address;
  }
  
- DWORD GetTokenInformation(HANDLE token,
-                           TOKEN_INFORMATION_CLASS info_class,
-                           std::unique_ptr<BYTE[]>* buffer) {
-   // Get the required buffer size.
-   DWORD size = 0;
+ };  // namespace sandbox
+ 
+ void ResolveNTFunctionPtr(const char* name, void* ptr) {
+   static volatile HMODULE ntdll = NULL;
+ 
 diff --git a/security/sandbox/chromium/sandbox/win/src/win_utils.h b/security/sandbox/chromium/sandbox/win/src/win_utils.h
 --- a/security/sandbox/chromium/sandbox/win/src/win_utils.h
 +++ b/security/sandbox/chromium/sandbox/win/src/win_utils.h
-@@ -111,17 +111,18 @@ HKEY GetReservedKeyFromName(const std::w
- bool ResolveRegistryName(std::wstring name, std::wstring* resolved_name);
+@@ -102,17 +102,18 @@ HKEY GetReservedKeyFromName(const base::
+ bool ResolveRegistryName(base::string16 name, base::string16* resolved_name);
  
  // Writes |length| bytes from the provided |buffer| into the address space of
  // |child_process|, at the specified |address|, preserving the original write
@@ -90,10 +112,10 @@ diff --git a/security/sandbox/chromium/sandbox/win/src/win_utils.h b/security/sa
 +                               size_t length,
 +                               DWORD writeProtection = PAGE_WRITECOPY);
  
- // Allocates |buffer_bytes| in child (PAGE_READWRITE) and copies data
- // from |local_buffer| in this process into |child|. |remote_buffer|
- // contains the address in the chile.  If a zero byte copy is
- // requested |true| is returned and no allocation or copying is
- // attempted.  Returns false if allocation or copying fails. If
- // copying fails, the allocation will be reversed.
- bool CopyToChildMemory(HANDLE child,
+ // Returns true if the provided path points to a pipe.
+ bool IsPipe(const base::string16& path);
+ 
+ // Converts a NTSTATUS code to a Win32 error code.
+ DWORD GetLastErrorFromNtStatus(NTSTATUS status);
+ 
+ // Returns the address of the main exe module in memory taking in account

security/sandbox/chromium-shim/patches/after_update/consult_PermissionsService_for_file_access.patch

@@ -30,10 +30,10 @@ diff --git a/security/sandbox/chromium/sandbox/win/src/filesystem_dispatcher.cc
  FilesystemDispatcher::FilesystemDispatcher(PolicyBase* policy_base)
      : policy_base_(policy_base) {
    static const IPCCall create_params = {
-       {IpcTag::NTCREATEFILE,
-        {WCHAR_TYPE, UINT32_TYPE, UINT32_TYPE, UINT32_TYPE, UINT32_TYPE,
-         UINT32_TYPE, UINT32_TYPE}},
-@@ -105,16 +107,26 @@ bool FilesystemDispatcher::NtCreateFile(
+       {IPC_NTCREATEFILE_TAG,
+        {WCHAR_TYPE,
+         UINT32_TYPE,
+@@ -110,16 +112,26 @@ bool FilesystemDispatcher::NtCreateFile(
    params[OpenFile::OPTIONS] = ParamPickerMake(create_options);
    params[OpenFile::BROKER] = ParamPickerMake(broker);
  
@@ -41,7 +41,7 @@ diff --git a/security/sandbox/chromium/sandbox/win/src/filesystem_dispatcher.cc
    // are just middlemen in the operation since is the FileSystemPolicy which
    // knows what to do.
    EvalResult result =
-       policy_base_->EvalPolicy(IpcTag::NTCREATEFILE, params.GetBase());
+       policy_base_->EvalPolicy(IPC_NTCREATEFILE_TAG, params.GetBase());
 +
 +  // If the policies forbid access (any result other than ASK_BROKER),
 +  // then check for user-granted access to file.
@@ -60,7 +60,7 @@ diff --git a/security/sandbox/chromium/sandbox/win/src/filesystem_dispatcher.cc
            file_attributes, share_access, create_disposition, create_options,
            &handle, &nt_status, &io_information)) {
      ipc->return_info.nt_status = STATUS_ACCESS_DENIED;
-@@ -150,16 +162,26 @@ bool FilesystemDispatcher::NtOpenFile(IP
+@@ -157,16 +169,26 @@ bool FilesystemDispatcher::NtOpenFile(IP
    params[OpenFile::OPTIONS] = ParamPickerMake(open_options);
    params[OpenFile::BROKER] = ParamPickerMake(broker);
  
@@ -68,7 +68,7 @@ diff --git a/security/sandbox/chromium/sandbox/win/src/filesystem_dispatcher.cc
    // are just middlemen in the operation since is the FileSystemPolicy which
    // knows what to do.
    EvalResult result =
-       policy_base_->EvalPolicy(IpcTag::NTOPENFILE, params.GetBase());
+       policy_base_->EvalPolicy(IPC_NTOPENFILE_TAG, params.GetBase());
 +
 +  // If the policies forbid access (any result other than ASK_BROKER),
 +  // then check for user-granted access to file.
@@ -90,7 +90,7 @@ diff --git a/security/sandbox/chromium/sandbox/win/src/filesystem_dispatcher.cc
 diff --git a/security/sandbox/chromium/sandbox/win/src/filesystem_interception.cc b/security/sandbox/chromium/sandbox/win/src/filesystem_interception.cc
 --- a/security/sandbox/chromium/sandbox/win/src/filesystem_interception.cc
 +++ b/security/sandbox/chromium/sandbox/win/src/filesystem_interception.cc
-@@ -75,19 +75,16 @@ NTSTATUS WINAPI TargetNtCreateFile(NtCre
+@@ -70,19 +70,16 @@ NTSTATUS WINAPI TargetNtCreateFile(NtCre
      CountedParameterSet<OpenFile> params;
      const wchar_t* name_ptr = name.get();
      params[OpenFile::NAME] = ParamPickerMake(name_ptr);
@@ -99,7 +99,7 @@ diff --git a/security/sandbox/chromium/sandbox/win/src/filesystem_interception.c
      params[OpenFile::OPTIONS] = ParamPickerMake(options_uint32);
      params[OpenFile::BROKER] = ParamPickerMake(broker);
  
--    if (!QueryBroker(IpcTag::NTCREATEFILE, params.GetBase()))
+-    if (!QueryBroker(IPC_NTCREATEFILE_TAG, params.GetBase()))
 -      break;
 -
      SharedMemIPCClient ipc(memory);
@@ -107,25 +107,25 @@ diff --git a/security/sandbox/chromium/sandbox/win/src/filesystem_interception.c
      // The following call must match in the parameters with
      // FilesystemDispatcher::ProcessNtCreateFile.
      ResultCode code =
-         CrossCall(ipc, IpcTag::NTCREATEFILE, name.get(), attributes,
+         CrossCall(ipc, IPC_NTCREATEFILE_TAG, name.get(), attributes,
                    desired_access_uint32, file_attributes, sharing, disposition,
                    options_uint32, &answer);
-@@ -160,19 +157,16 @@ NTSTATUS WINAPI TargetNtOpenFile(NtOpenF
-     const wchar_t* name_ptr = name.get();
+@@ -154,19 +151,16 @@ NTSTATUS WINAPI TargetNtOpenFile(NtOpenF
      CountedParameterSet<OpenFile> params;
+     const wchar_t* name_ptr = name.get();
      params[OpenFile::NAME] = ParamPickerMake(name_ptr);
      params[OpenFile::ACCESS] = ParamPickerMake(desired_access_uint32);
      params[OpenFile::DISPOSITION] = ParamPickerMake(disposition_uint32);
      params[OpenFile::OPTIONS] = ParamPickerMake(options_uint32);
      params[OpenFile::BROKER] = ParamPickerMake(broker);
  
--    if (!QueryBroker(IpcTag::NTOPENFILE, params.GetBase()))
+-    if (!QueryBroker(IPC_NTOPENFILE_TAG, params.GetBase()))
 -      break;
 -
      SharedMemIPCClient ipc(memory);
      CrossCallReturn answer = {0};
      ResultCode code =
-         CrossCall(ipc, IpcTag::NTOPENFILE, name.get(), attributes,
+         CrossCall(ipc, IPC_NTOPENFILE_TAG, name.get(), attributes,
                    desired_access_uint32, sharing, options_uint32, &answer);
      if (SBOX_ALL_OK != code)
        break;

security/sandbox/chromium-shim/patches/after_update/move_shared_memory_duplication_after_initialization.patch

@@ -1,94 +0,0 @@
-# HG changeset patch
-# User Bob Owen <bobowencode@gmail.com>
-# Date 1577387989 0
-#      Thu Dec 26 19:19:49 2019 +0000
-# Node ID 32adf437117bdca54be4959813acbb604f65137f
-# Parent  214214029beb6cca606e11ba519d11cc7dbb37af
-Bug 1605867: Don't duplicate IPC shared memory when we might fail to launch the process correctly. r=handyman
-
-Differential Revision: https://phabricator.services.mozilla.com/D58271
-
-diff --git a/security/sandbox/chromium/sandbox/win/src/target_process.cc b/security/sandbox/chromium/sandbox/win/src/target_process.cc
---- a/security/sandbox/chromium/sandbox/win/src/target_process.cc
-+++ b/security/sandbox/chromium/sandbox/win/src/target_process.cc
-@@ -286,45 +286,28 @@ ResultCode TargetProcess::Init(Dispatche
-   shared_section_.Set(::CreateFileMappingW(INVALID_HANDLE_VALUE, nullptr,
-                                            PAGE_READWRITE | SEC_COMMIT, 0,
-                                            shared_mem_size, nullptr));
-   if (!shared_section_.IsValid()) {
-     *win_error = ::GetLastError();
-     return SBOX_ERROR_CREATE_FILE_MAPPING;
-   }
- 
--  DWORD access = FILE_MAP_READ | FILE_MAP_WRITE | SECTION_QUERY;
--  HANDLE target_shared_section;
--  if (!::DuplicateHandle(::GetCurrentProcess(), shared_section_.Get(),
--                         sandbox_process_info_.process_handle(),
--                         &target_shared_section, access, false, 0)) {
--    *win_error = ::GetLastError();
--    return SBOX_ERROR_DUPLICATE_SHARED_SECTION;
--  }
--
-   void* shared_memory = ::MapViewOfFile(
-       shared_section_.Get(), FILE_MAP_WRITE | FILE_MAP_READ, 0, 0, 0);
-   if (!shared_memory) {
-     *win_error = ::GetLastError();
-     return SBOX_ERROR_MAP_VIEW_OF_SHARED_SECTION;
-   }
- 
-   CopyPolicyToTarget(policy, shared_policy_size,
-                      reinterpret_cast<char*>(shared_memory) + shared_IPC_size);
- 
-   ResultCode ret;
-   // Set the global variables in the target. These are not used on the broker.
--  g_shared_section = target_shared_section;
--  ret = TransferVariable("g_shared_section", &g_shared_section,
--                         sizeof(g_shared_section));
--  g_shared_section = nullptr;
--  if (SBOX_ALL_OK != ret) {
--    *win_error = ::GetLastError();
--    return ret;
--  }
-   g_shared_IPC_size = shared_IPC_size;
-   ret = TransferVariable("g_shared_IPC_size", &g_shared_IPC_size,
-                          sizeof(g_shared_IPC_size));
-   g_shared_IPC_size = 0;
-   if (SBOX_ALL_OK != ret) {
-     *win_error = ::GetLastError();
-     return ret;
-   }
-@@ -339,16 +322,34 @@ ResultCode TargetProcess::Init(Dispatche
- 
-   ipc_server_.reset(new SharedMemIPCServer(
-       sandbox_process_info_.process_handle(),
-       sandbox_process_info_.process_id(), thread_pool_, ipc_dispatcher));
- 
-   if (!ipc_server_->Init(shared_memory, shared_IPC_size, kIPCChannelSize))
-     return SBOX_ERROR_NO_SPACE;
- 
-+  DWORD access = FILE_MAP_READ | FILE_MAP_WRITE | SECTION_QUERY;
-+  HANDLE target_shared_section;
-+  if (!::DuplicateHandle(::GetCurrentProcess(), shared_section_.Get(),
-+                         sandbox_process_info_.process_handle(),
-+                         &target_shared_section, access, false, 0)) {
-+    *win_error = ::GetLastError();
-+    return SBOX_ERROR_DUPLICATE_SHARED_SECTION;
-+  }
-+
-+  g_shared_section = target_shared_section;
-+  ret = TransferVariable("g_shared_section", &g_shared_section,
-+                         sizeof(g_shared_section));
-+  g_shared_section = nullptr;
-+  if (SBOX_ALL_OK != ret) {
-+    *win_error = ::GetLastError();
-+    return ret;
-+  }
-+
-   // After this point we cannot use this handle anymore.
-   ::CloseHandle(sandbox_process_info_.TakeThreadHandle());
- 
-   return SBOX_ALL_OK;
- }
- 
- void TargetProcess::Terminate() {
-   if (!sandbox_process_info_.IsValid())

security/sandbox/chromium-shim/patches/after_update/patch_order.txt

@@ -5,4 +5,3 @@ consult_PermissionsService_for_file_access.patch
 allow_flash_temporary_files.patch
 arm64_set_LoaderThreads.patch
 change_to_DCHECK_in_CloseHandleWrapper.patch
-move_shared_memory_duplication_after_initialization.patch

security/sandbox/chromium-shim/patches/with_update/aarch64_control_flow_guard.patch

@@ -17,11 +17,11 @@ Differential Revision: https://phabricator.services.mozilla.com/D29474
 diff --git a/security/sandbox/chromium/sandbox/win/src/process_mitigations.cc b/security/sandbox/chromium/sandbox/win/src/process_mitigations.cc
 --- a/security/sandbox/chromium/sandbox/win/src/process_mitigations.cc
 +++ b/security/sandbox/chromium/sandbox/win/src/process_mitigations.cc
-@@ -431,16 +431,21 @@ void ConvertProcessMitigationsToPolicy(M
+@@ -400,16 +400,21 @@ void ConvertProcessMitigationsToPolicy(M
  
    // Mitigations >= Win8.1:
    //----------------------------------------------------------------------------
-   if (version >= base::win::Version::WIN8_1) {
+   if (version >= base::win::VERSION_WIN8_1) {
      if (flags & MITIGATION_DYNAMIC_CODE_DISABLE) {
        *policy_value_1 |=
            PROCESS_CREATION_MITIGATION_POLICY_PROHIBIT_DYNAMIC_CODE_ALWAYS_ON;
@@ -35,14 +35,14 @@ diff --git a/security/sandbox/chromium/sandbox/win/src/process_mitigations.cc b/
  
    // Mitigations >= Win10:
    //----------------------------------------------------------------------------
-   if (version >= base::win::Version::WIN10) {
+   if (version >= base::win::VERSION_WIN10) {
      if (flags & MITIGATION_NONSYSTEM_FONT_DISABLE) {
        *policy_value_1 |=
            PROCESS_CREATION_MITIGATION_POLICY_FONT_DISABLE_ALWAYS_ON;
 diff --git a/security/sandbox/chromium/sandbox/win/src/security_level.h b/security/sandbox/chromium/sandbox/win/src/security_level.h
 --- a/security/sandbox/chromium/sandbox/win/src/security_level.h
 +++ b/security/sandbox/chromium/sandbox/win/src/security_level.h
-@@ -282,11 +282,20 @@ const MitigationFlags MITIGATION_IMAGE_L
+@@ -273,11 +273,20 @@ const MitigationFlags MITIGATION_IMAGE_L
  const MitigationFlags MITIGATION_IMAGE_LOAD_PREFER_SYS32 = 0x00100000;
  
  // Prevents hyperthreads from interfering with indirect branch predictions.

security/sandbox/chromium-shim/patches/with_update/add_option_to_not_use_restricting_sids.patch

@@ -12,7 +12,7 @@ https://hg.mozilla.org/mozilla-central/rev/14374cd9497a
 diff --git a/security/sandbox/chromium/sandbox/win/src/restricted_token_utils.cc b/security/sandbox/chromium/sandbox/win/src/restricted_token_utils.cc
 --- a/security/sandbox/chromium/sandbox/win/src/restricted_token_utils.cc
 +++ b/security/sandbox/chromium/sandbox/win/src/restricted_token_utils.cc
-@@ -51,16 +51,17 @@ DWORD GetObjectSecurityDescriptor(HANDLE
+@@ -51,16 +51,17 @@
  
  }  // namespace
  
@@ -28,9 +28,9 @@ diff --git a/security/sandbox/chromium/sandbox/win/src/restricted_token_utils.cc
    if (lockdown_default_dacl)
      restricted_token.SetLockdownDefaultDacl();
  
-   std::vector<std::wstring> privilege_exceptions;
+   std::vector<base::string16> privilege_exceptions;
    std::vector<Sid> sid_exceptions;
-@@ -73,19 +74,22 @@ DWORD CreateRestrictedToken(HANDLE effec
+@@ -68,19 +69,22 @@ DWORD CreateRestrictedToken(TokenLevel s
        deny_sids = false;
        remove_privileges = false;
        break;
@@ -56,7 +56,7 @@ diff --git a/security/sandbox/chromium/sandbox/win/src/restricted_token_utils.cc
        sid_exceptions.push_back(WinWorldSid);
        sid_exceptions.push_back(WinInteractiveSid);
        sid_exceptions.push_back(WinAuthenticatedUserSid);
-@@ -108,49 +112,57 @@ DWORD CreateRestrictedToken(HANDLE effec
+@@ -93,49 +97,57 @@ DWORD CreateRestrictedToken(TokenLevel s
        break;
      }
      case USER_INTERACTIVE: {
@@ -133,7 +133,7 @@ diff --git a/security/sandbox/chromium/sandbox/win/src/restricted_token_utils.cc
 diff --git a/security/sandbox/chromium/sandbox/win/src/restricted_token_utils.h b/security/sandbox/chromium/sandbox/win/src/restricted_token_utils.h
 --- a/security/sandbox/chromium/sandbox/win/src/restricted_token_utils.h
 +++ b/security/sandbox/chromium/sandbox/win/src/restricted_token_utils.h
-@@ -33,16 +33,17 @@ enum TokenType { IMPERSONATION = 0, PRIM
+@@ -33,16 +33,17 @@ enum TokenType {
  // If the function succeeds, the return value is ERROR_SUCCESS. If the
  // function fails, the return value is the win32 error code corresponding to
  // the error.
@@ -154,7 +154,7 @@ diff --git a/security/sandbox/chromium/sandbox/win/src/restricted_token_utils.h
 diff --git a/security/sandbox/chromium/sandbox/win/src/sandbox_policy.h b/security/sandbox/chromium/sandbox/win/src/sandbox_policy.h
 --- a/security/sandbox/chromium/sandbox/win/src/sandbox_policy.h
 +++ b/security/sandbox/chromium/sandbox/win/src/sandbox_policy.h
-@@ -101,16 +101,21 @@ class TargetPolicy {
+@@ -95,16 +95,21 @@ class TargetPolicy {
    virtual ResultCode SetTokenLevel(TokenLevel initial, TokenLevel lockdown) = 0;
  
    // Returns the initial token level.
@@ -179,7 +179,7 @@ diff --git a/security/sandbox/chromium/sandbox/win/src/sandbox_policy.h b/securi
 diff --git a/security/sandbox/chromium/sandbox/win/src/sandbox_policy_base.cc b/security/sandbox/chromium/sandbox/win/src/sandbox_policy_base.cc
 --- a/security/sandbox/chromium/sandbox/win/src/sandbox_policy_base.cc
 +++ b/security/sandbox/chromium/sandbox/win/src/sandbox_policy_base.cc
-@@ -152,16 +152,20 @@ ResultCode PolicyBase::SetTokenLevel(Tok
+@@ -149,16 +149,20 @@ ResultCode PolicyBase::SetTokenLevel(Tok
  TokenLevel PolicyBase::GetInitialTokenLevel() const {
    return initial_level_;
  }
@@ -200,7 +200,7 @@ diff --git a/security/sandbox/chromium/sandbox/win/src/sandbox_policy_base.cc b/
    ui_exceptions_ = ui_exceptions;
    return SBOX_ALL_OK;
  }
-@@ -413,17 +417,18 @@ ResultCode PolicyBase::MakeJobObject(bas
+@@ -402,17 +406,18 @@ ResultCode PolicyBase::MakeJobObject(bas
  
  ResultCode PolicyBase::MakeTokens(base::win::ScopedHandle* initial,
                                    base::win::ScopedHandle* lockdown,
@@ -213,14 +213,14 @@ diff --git a/security/sandbox/chromium/sandbox/win/src/sandbox_policy_base.cc b/
 +                            PRIMARY, lockdown_default_dacl_,
 +                            use_restricting_sids_, lockdown);
    if (ERROR_SUCCESS != result)
-     return SBOX_ERROR_CANNOT_CREATE_RESTRICTED_TOKEN;
+     return SBOX_ERROR_GENERIC;
  
    // If we're launching on the alternate desktop we need to make sure the
    // integrity label on the object is no higher than the sandboxed process's
    // integrity level. So, we lower the label on the desktop process if it's
    // not already low enough for our process.
    if (use_alternate_desktop_ && integrity_level_ != INTEGRITY_LEVEL_LAST) {
-@@ -482,17 +487,18 @@ ResultCode PolicyBase::MakeTokens(base::
+@@ -466,17 +471,18 @@ ResultCode PolicyBase::MakeTokens(base::
      }
    }
  
@@ -233,7 +233,7 @@ diff --git a/security/sandbox/chromium/sandbox/win/src/sandbox_policy_base.cc b/
 +                            IMPERSONATION, lockdown_default_dacl_,
 +                            use_restricting_sids_, initial);
    if (ERROR_SUCCESS != result)
-     return SBOX_ERROR_CANNOT_CREATE_RESTRICTED_IMP_TOKEN;
+     return SBOX_ERROR_GENERIC;
  
    return SBOX_ALL_OK;
  }
@@ -243,7 +243,7 @@ diff --git a/security/sandbox/chromium/sandbox/win/src/sandbox_policy_base.cc b/
 diff --git a/security/sandbox/chromium/sandbox/win/src/sandbox_policy_base.h b/security/sandbox/chromium/sandbox/win/src/sandbox_policy_base.h
 --- a/security/sandbox/chromium/sandbox/win/src/sandbox_policy_base.h
 +++ b/security/sandbox/chromium/sandbox/win/src/sandbox_policy_base.h
-@@ -41,16 +41,17 @@ class PolicyBase final : public TargetPo
+@@ -37,16 +37,17 @@ class PolicyBase final : public TargetPo
    PolicyBase();
  
    // TargetPolicy:
@@ -257,11 +257,11 @@ diff --git a/security/sandbox/chromium/sandbox/win/src/sandbox_policy_base.h b/s
    JobLevel GetJobLevel() const override;
    ResultCode SetJobMemoryLimit(size_t memory_limit) override;
    ResultCode SetAlternateDesktop(bool alternate_winstation) override;
-   std::wstring GetAlternateDesktop() const override;
+   base::string16 GetAlternateDesktop() const override;
    ResultCode CreateAlternateDesktop(bool alternate_winstation) override;
    void DestroyAlternateDesktop() override;
    ResultCode SetIntegrityLevel(IntegrityLevel integrity_level) override;
-@@ -134,16 +135,17 @@ class PolicyBase final : public TargetPo
+@@ -122,16 +123,17 @@ class PolicyBase final : public TargetPo
    // The policy takes ownership of them.
    typedef std::list<TargetProcess*> TargetSet;
    TargetSet targets_;

security/sandbox/chromium-shim/patches/with_update/add_support_for_random_restricted_SID.patch

@@ -1,461 +0,0 @@
-# HG changeset patch
-# User Bob Owen <bobowencode@gmail.com>
-# Date 1584045580 0
-#      Thu Mar 12 20:39:40 2020 +0000
-# Node ID c996dbc3e3663fb372feb8e171562e86b09583b6
-# Parent  f96efa1d9f5c676c0ee8fd80044a494258eff3d3
-Bug 1557282 Part 1: Take chromium commit c1ce57ea5d31208af589b4839390a44ab20b0c8f. r=handyman,gcp
-
-This adds AddRestrictingRandomSid feature, which fixes our issues with
-SetLockdownDefaultDacl, apart from when we are running from a network drive.
-
-Differential Revision: https://phabricator.services.mozilla.com/D66610
-
-diff --git a/security/sandbox/chromium/sandbox/win/src/restricted_token.cc b/security/sandbox/chromium/sandbox/win/src/restricted_token.cc
---- a/security/sandbox/chromium/sandbox/win/src/restricted_token.cc
-+++ b/security/sandbox/chromium/sandbox/win/src/restricted_token.cc
-@@ -141,16 +141,24 @@ DWORD RestrictedToken::GetRestrictedToke
-   } else {
-     // Modify the default dacl on the token to contain Restricted.
-     if (!AddSidToDefaultDacl(new_token.Get(), WinRestrictedCodeSid,
-                              GRANT_ACCESS, GENERIC_ALL)) {
-       return ::GetLastError();
-     }
-   }
- 
-+  for (const auto& default_dacl_sid : sids_for_default_dacl_) {
-+    if (!AddSidToDefaultDacl(new_token.Get(), std::get<0>(default_dacl_sid),
-+                             std::get<1>(default_dacl_sid),
-+                             std::get<2>(default_dacl_sid))) {
-+      return ::GetLastError();
-+    }
-+  }
-+
-   // Add user to default dacl.
-   if (!AddUserSidToDefaultDacl(new_token.Get(), GENERIC_ALL))
-     return ::GetLastError();
- 
-   DWORD error = SetTokenIntegrityLevel(new_token.Get(), integrity_level_);
-   if (ERROR_SUCCESS != error)
-     return error;
- 
-@@ -405,9 +413,20 @@ DWORD RestrictedToken::SetIntegrityLevel
-   integrity_level_ = integrity_level;
-   return ERROR_SUCCESS;
- }
- 
- void RestrictedToken::SetLockdownDefaultDacl() {
-   lockdown_default_dacl_ = true;
- }
- 
-+DWORD RestrictedToken::AddDefaultDaclSid(const Sid& sid,
-+                                         ACCESS_MODE access_mode,
-+                                         ACCESS_MASK access) {
-+  DCHECK(init_);
-+  if (!init_)
-+    return ERROR_NO_TOKEN;
-+
-+  sids_for_default_dacl_.push_back(std::make_tuple(sid, access_mode, access));
-+  return ERROR_SUCCESS;
-+}
-+
- }  // namespace sandbox
-diff --git a/security/sandbox/chromium/sandbox/win/src/restricted_token.h b/security/sandbox/chromium/sandbox/win/src/restricted_token.h
---- a/security/sandbox/chromium/sandbox/win/src/restricted_token.h
-+++ b/security/sandbox/chromium/sandbox/win/src/restricted_token.h
-@@ -2,16 +2,17 @@
- // Use of this source code is governed by a BSD-style license that can be
- // found in the LICENSE file.
- 
- #ifndef SANDBOX_SRC_RESTRICTED_TOKEN_H_
- #define SANDBOX_SRC_RESTRICTED_TOKEN_H_
- 
- #include <windows.h>
- 
-+#include <tuple>
- #include <vector>
- 
- #include <string>
- 
- #include "base/macros.h"
- #include "base/win/scoped_handle.h"
- #include "sandbox/win/src/restricted_token_utils.h"
- #include "sandbox/win/src/security_level.h"
-@@ -169,23 +170,31 @@ class RestrictedToken {
-   // Sets the token integrity level. This is only valid on Vista. The integrity
-   // level cannot be higher than your current integrity level.
-   DWORD SetIntegrityLevel(IntegrityLevel integrity_level);
- 
-   // Set a flag which indicates the created token should have a locked down
-   // default DACL when created.
-   void SetLockdownDefaultDacl();
- 
-+  // Add a SID to the default DACL. These SIDs are added regardless of the
-+  // SetLockdownDefaultDacl state.
-+  DWORD AddDefaultDaclSid(const Sid& sid,
-+                          ACCESS_MODE access_mode,
-+                          ACCESS_MASK access);
-+
-  private:
-   // The list of restricting sids in the restricted token.
-   std::vector<Sid> sids_to_restrict_;
-   // The list of privileges to remove in the restricted token.
-   std::vector<LUID> privileges_to_disable_;
-   // The list of sids to mark as Deny Only in the restricted token.
-   std::vector<Sid> sids_for_deny_only_;
-+  // The list of sids to add to the default DACL of the restricted token.
-+  std::vector<std::tuple<Sid, ACCESS_MODE, ACCESS_MASK>> sids_for_default_dacl_;
-   // The token to restrict. Can only be set in a constructor.
-   base::win::ScopedHandle effective_token_;
-   // The token integrity level. Only valid on Vista.
-   IntegrityLevel integrity_level_;
-   // Tells if the object is initialized or not (if Init() has been called)
-   bool init_;
-   // Lockdown the default DACL when creating new tokens.
-   bool lockdown_default_dacl_;
-diff --git a/security/sandbox/chromium/sandbox/win/src/restricted_token_utils.cc b/security/sandbox/chromium/sandbox/win/src/restricted_token_utils.cc
---- a/security/sandbox/chromium/sandbox/win/src/restricted_token_utils.cc
-+++ b/security/sandbox/chromium/sandbox/win/src/restricted_token_utils.cc
-@@ -51,22 +51,29 @@ DWORD GetObjectSecurityDescriptor(HANDLE
- 
- }  // namespace
- 
- DWORD CreateRestrictedToken(HANDLE effective_token,
-                             TokenLevel security_level,
-                             IntegrityLevel integrity_level,
-                             TokenType token_type,
-                             bool lockdown_default_dacl,
-+                            PSID unique_restricted_sid,
-                             bool use_restricting_sids,
-                             base::win::ScopedHandle* token) {
-   RestrictedToken restricted_token;
-   restricted_token.Init(effective_token);
-   if (lockdown_default_dacl)
-     restricted_token.SetLockdownDefaultDacl();
-+  if (unique_restricted_sid) {
-+    restricted_token.AddDefaultDaclSid(Sid(unique_restricted_sid), GRANT_ACCESS,
-+                                       GENERIC_ALL);
-+    restricted_token.AddDefaultDaclSid(Sid(WinCreatorOwnerRightsSid),
-+                                       GRANT_ACCESS, READ_CONTROL);
-+  }
- 
-   std::vector<std::wstring> privilege_exceptions;
-   std::vector<Sid> sid_exceptions;
- 
-   bool deny_sids = true;
-   bool remove_privileges = true;
- 
-   switch (security_level) {
-@@ -118,50 +125,60 @@ DWORD CreateRestrictedToken(HANDLE effec
-       sid_exceptions.push_back(WinAuthenticatedUserSid);
-       privilege_exceptions.push_back(SE_CHANGE_NOTIFY_NAME);
-       if (use_restricting_sids) {
-         restricted_token.AddRestrictingSid(WinBuiltinUsersSid);
-         restricted_token.AddRestrictingSid(WinWorldSid);
-         restricted_token.AddRestrictingSid(WinRestrictedCodeSid);
-         restricted_token.AddRestrictingSidCurrentUser();
-         restricted_token.AddRestrictingSidLogonSession();
-+        if (unique_restricted_sid)
-+          restricted_token.AddRestrictingSid(Sid(unique_restricted_sid));
-       }
-       break;
-     }
-     case USER_LIMITED: {
-       sid_exceptions.push_back(WinBuiltinUsersSid);
-       sid_exceptions.push_back(WinWorldSid);
-       sid_exceptions.push_back(WinInteractiveSid);
-       privilege_exceptions.push_back(SE_CHANGE_NOTIFY_NAME);
-       if (use_restricting_sids) {
-         restricted_token.AddRestrictingSid(WinBuiltinUsersSid);
-         restricted_token.AddRestrictingSid(WinWorldSid);
-         restricted_token.AddRestrictingSid(WinRestrictedCodeSid);
-+        if (unique_restricted_sid)
-+          restricted_token.AddRestrictingSid(Sid(unique_restricted_sid));
- 
-         // This token has to be able to create objects in BNO.
-         // Unfortunately, on Vista+, it needs the current logon sid
-         // in the token to achieve this. You should also set the process to be
-         // low integrity level so it can't access object created by other
-         // processes.
-         restricted_token.AddRestrictingSidLogonSession();
-+      } else {
-+        restricted_token.AddUserSidForDenyOnly();
-       }
-       break;
-     }
-     case USER_RESTRICTED: {
-       privilege_exceptions.push_back(SE_CHANGE_NOTIFY_NAME);
-       restricted_token.AddUserSidForDenyOnly();
-       if (use_restricting_sids) {
-         restricted_token.AddRestrictingSid(WinRestrictedCodeSid);
-+        if (unique_restricted_sid)
-+          restricted_token.AddRestrictingSid(Sid(unique_restricted_sid));
-       }
-       break;
-     }
-     case USER_LOCKDOWN: {
-       restricted_token.AddUserSidForDenyOnly();
-       if (use_restricting_sids) {
-         restricted_token.AddRestrictingSid(WinNullSid);
-+        if (unique_restricted_sid)
-+          restricted_token.AddRestrictingSid(Sid(unique_restricted_sid));
-       }
-       break;
-     }
-     default: { return ERROR_BAD_ARGUMENTS; }
-   }
- 
-   DWORD err_code = ERROR_SUCCESS;
-   if (deny_sids) {
-diff --git a/security/sandbox/chromium/sandbox/win/src/restricted_token_utils.h b/security/sandbox/chromium/sandbox/win/src/restricted_token_utils.h
---- a/security/sandbox/chromium/sandbox/win/src/restricted_token_utils.h
-+++ b/security/sandbox/chromium/sandbox/win/src/restricted_token_utils.h
-@@ -33,16 +33,17 @@ enum TokenType { IMPERSONATION = 0, PRIM
- // If the function succeeds, the return value is ERROR_SUCCESS. If the
- // function fails, the return value is the win32 error code corresponding to
- // the error.
- DWORD CreateRestrictedToken(HANDLE effective_token,
-                             TokenLevel security_level,
-                             IntegrityLevel integrity_level,
-                             TokenType token_type,
-                             bool lockdown_default_dacl,
-+                            PSID unique_restricted_sid,
-                             bool use_restricting_sids,
-                             base::win::ScopedHandle* token);
- 
- // Sets the integrity label on a object handle.
- DWORD SetObjectIntegrityLabel(HANDLE handle,
-                               SE_OBJECT_TYPE type,
-                               const wchar_t* ace_access,
-                               const wchar_t* integrity_level_sid);
-diff --git a/security/sandbox/chromium/sandbox/win/src/sandbox_policy.h b/security/sandbox/chromium/sandbox/win/src/sandbox_policy.h
---- a/security/sandbox/chromium/sandbox/win/src/sandbox_policy.h
-+++ b/security/sandbox/chromium/sandbox/win/src/sandbox_policy.h
-@@ -256,16 +256,20 @@ class TargetPolicy {
-   // ownership of the handle.
-   virtual void AddHandleToShare(HANDLE handle) = 0;
- 
-   // Locks down the default DACL of the created lockdown and initial tokens
-   // to restrict what other processes are allowed to access a process' kernel
-   // resources.
-   virtual void SetLockdownDefaultDacl() = 0;
- 
-+  // Adds a restricting random SID to the restricted SIDs list as well as
-+  // the default DACL.
-+  virtual void AddRestrictingRandomSid() = 0;
-+
-   // Enable OPM API redirection when in Win32k lockdown.
-   virtual void SetEnableOPMRedirection() = 0;
-   // Enable OPM API emulation when in Win32k lockdown.
-   virtual bool GetEnableOPMRedirection() = 0;
- 
-   // Configure policy to use an AppContainer profile. |package_name| is the
-   // name of the profile to use. Specifying True for |create_profile| ensures
-   // the profile exists, if set to False process creation will fail if the
-diff --git a/security/sandbox/chromium/sandbox/win/src/sandbox_policy_base.cc b/security/sandbox/chromium/sandbox/win/src/sandbox_policy_base.cc
---- a/security/sandbox/chromium/sandbox/win/src/sandbox_policy_base.cc
-+++ b/security/sandbox/chromium/sandbox/win/src/sandbox_policy_base.cc
-@@ -105,16 +105,17 @@ PolicyBase::PolicyBase()
-       delayed_integrity_level_(INTEGRITY_LEVEL_LAST),
-       mitigations_(0),
-       delayed_mitigations_(0),
-       is_csrss_connected_(true),
-       policy_maker_(nullptr),
-       policy_(nullptr),
-       lowbox_sid_(nullptr),
-       lockdown_default_dacl_(false),
-+      add_restricting_random_sid_(false),
-       enable_opm_redirection_(false),
-       effective_token_(nullptr) {
-   ::InitializeCriticalSection(&lock_);
-   dispatcher_.reset(new TopLevelDispatcher(this));
- }
- 
- PolicyBase::~PolicyBase() {
-   TargetSet::iterator it;
-@@ -389,16 +390,20 @@ void PolicyBase::AddHandleToShare(HANDLE
- 
-   handles_to_share_.push_back(handle);
- }
- 
- void PolicyBase::SetLockdownDefaultDacl() {
-   lockdown_default_dacl_ = true;
- }
- 
-+void PolicyBase::AddRestrictingRandomSid() {
-+  add_restricting_random_sid_ = true;
-+}
-+
- const base::HandlesToInheritVector& PolicyBase::GetHandlesBeingShared() {
-   return handles_to_share_;
- }
- 
- ResultCode PolicyBase::MakeJobObject(base::win::ScopedHandle* job) {
-   if (job_level_ == JOB_NONE) {
-     job->Close();
-     return SBOX_ALL_OK;
-@@ -413,22 +418,26 @@ ResultCode PolicyBase::MakeJobObject(bas
- 
-   *job = job_obj.Take();
-   return SBOX_ALL_OK;
- }
- 
- ResultCode PolicyBase::MakeTokens(base::win::ScopedHandle* initial,
-                                   base::win::ScopedHandle* lockdown,
-                                   base::win::ScopedHandle* lowbox) {
-+  Sid random_sid = Sid::GenerateRandomSid();
-+  PSID random_sid_ptr = nullptr;
-+  if (add_restricting_random_sid_)
-+    random_sid_ptr = random_sid.GetPSID();
-+
-   // Create the 'naked' token. This will be the permanent token associated
-   // with the process and therefore with any thread that is not impersonating.
--  DWORD result =
--      CreateRestrictedToken(effective_token_, lockdown_level_, integrity_level_,
--                            PRIMARY, lockdown_default_dacl_,
--                            use_restricting_sids_, lockdown);
-+  DWORD result = CreateRestrictedToken(
-+      effective_token_, lockdown_level_, integrity_level_, PRIMARY,
-+      lockdown_default_dacl_, random_sid_ptr, use_restricting_sids_, lockdown);
-   if (ERROR_SUCCESS != result)
-     return SBOX_ERROR_CANNOT_CREATE_RESTRICTED_TOKEN;
- 
-   // If we're launching on the alternate desktop we need to make sure the
-   // integrity label on the object is no higher than the sandboxed process's
-   // integrity level. So, we lower the label on the desktop process if it's
-   // not already low enough for our process.
-   if (use_alternate_desktop_ && integrity_level_ != INTEGRITY_LEVEL_LAST) {
-@@ -485,20 +494,19 @@ ResultCode PolicyBase::MakeTokens(base::
-                                  TOKEN_ALL_ACCESS)) {
-       return SBOX_ERROR_CANNOT_MODIFY_LOWBOX_TOKEN_DACL;
-     }
-   }
- 
-   // Create the 'better' token. We use this token as the one that the main
-   // thread uses when booting up the process. It should contain most of
-   // what we need (before reaching main( ))
--  result =
--      CreateRestrictedToken(effective_token_, initial_level_, integrity_level_,
--                            IMPERSONATION, lockdown_default_dacl_,
--                            use_restricting_sids_, initial);
-+  result = CreateRestrictedToken(
-+      effective_token_, initial_level_, integrity_level_, IMPERSONATION,
-+      lockdown_default_dacl_, random_sid_ptr, use_restricting_sids_, initial);
-   if (ERROR_SUCCESS != result)
-     return SBOX_ERROR_CANNOT_CREATE_RESTRICTED_IMP_TOKEN;
- 
-   return SBOX_ALL_OK;
- }
- 
- PSID PolicyBase::GetLowBoxSid() const {
-   return lowbox_sid_;
-diff --git a/security/sandbox/chromium/sandbox/win/src/sandbox_policy_base.h b/security/sandbox/chromium/sandbox/win/src/sandbox_policy_base.h
---- a/security/sandbox/chromium/sandbox/win/src/sandbox_policy_base.h
-+++ b/security/sandbox/chromium/sandbox/win/src/sandbox_policy_base.h
-@@ -69,16 +69,17 @@ class PolicyBase final : public TargetPo
-   ResultCode AddRule(SubSystem subsystem,
-                      Semantics semantics,
-                      const wchar_t* pattern) override;
-   ResultCode AddDllToUnload(const wchar_t* dll_name) override;
-   ResultCode AddKernelObjectToClose(const wchar_t* handle_type,
-                                     const wchar_t* handle_name) override;
-   void AddHandleToShare(HANDLE handle) override;
-   void SetLockdownDefaultDacl() override;
-+  void AddRestrictingRandomSid() override;
-   void SetEnableOPMRedirection() override;
-   bool GetEnableOPMRedirection() override;
-   ResultCode AddAppContainerProfile(const wchar_t* package_name,
-                                     bool create_profile) override;
-   scoped_refptr<AppContainerProfile> GetAppContainerProfile() override;
-   void SetEffectiveToken(HANDLE token) override;
- 
-   // Get the AppContainer profile as its internal type.
-@@ -165,16 +166,17 @@ class PolicyBase final : public TargetPo
-   // This is a map of handle-types to names that we need to close in the
-   // target process. A null set means we need to close all handles of the
-   // given type.
-   HandleCloser handle_closer_;
-   PSID lowbox_sid_;
-   base::win::ScopedHandle lowbox_directory_;
-   std::unique_ptr<Dispatcher> dispatcher_;
-   bool lockdown_default_dacl_;
-+  bool add_restricting_random_sid_;
- 
-   static HDESK alternate_desktop_handle_;
-   static HWINSTA alternate_winstation_handle_;
-   static HDESK alternate_desktop_local_winstation_handle_;
-   static IntegrityLevel alternate_desktop_integrity_level_label_;
-   static IntegrityLevel
-       alternate_desktop_local_winstation_integrity_level_label_;
- 
-diff --git a/security/sandbox/chromium/sandbox/win/src/sid.cc b/security/sandbox/chromium/sandbox/win/src/sid.cc
---- a/security/sandbox/chromium/sandbox/win/src/sid.cc
-+++ b/security/sandbox/chromium/sandbox/win/src/sid.cc
-@@ -2,18 +2,20 @@
- // Use of this source code is governed by a BSD-style license that can be
- // found in the LICENSE file.
- 
- #include "sandbox/win/src/sid.h"
- 
- #include <memory>
- 
- #include <sddl.h>
-+#include <stdlib.h>
- 
- #include "base/logging.h"
-+#include "base/rand_util.h"
- #include "base/win/windows_version.h"
- #include "sandbox/win/src/win_utils.h"
- 
- namespace sandbox {
- 
- namespace {
- 
- DWORD WellKnownCapabilityToRid(WellKnownCapabilities capability) {
-@@ -127,16 +129,24 @@ Sid Sid::FromSubAuthorities(PSID_IDENTIF
- 
- Sid Sid::AllRestrictedApplicationPackages() {
-   SID_IDENTIFIER_AUTHORITY package_authority = {SECURITY_APP_PACKAGE_AUTHORITY};
-   DWORD sub_authorities[] = {SECURITY_APP_PACKAGE_BASE_RID,
-                              SECURITY_BUILTIN_PACKAGE_ANY_RESTRICTED_PACKAGE};
-   return FromSubAuthorities(&package_authority, 2, sub_authorities);
- }
- 
-+Sid Sid::GenerateRandomSid() {
-+  SID_IDENTIFIER_AUTHORITY package_authority = {SECURITY_NULL_SID_AUTHORITY};
-+  DWORD sub_authorities[4] = {};
-+  base::RandBytes(&sub_authorities, sizeof(sub_authorities));
-+  return FromSubAuthorities(&package_authority, _countof(sub_authorities),
-+                            sub_authorities);
-+}
-+
- PSID Sid::GetPSID() const {
-   return const_cast<BYTE*>(sid_);
- }
- 
- bool Sid::IsValid() const {
-   return !!::IsValidSid(GetPSID());
- }
- 
-diff --git a/security/sandbox/chromium/sandbox/win/src/sid.h b/security/sandbox/chromium/sandbox/win/src/sid.h
---- a/security/sandbox/chromium/sandbox/win/src/sid.h
-+++ b/security/sandbox/chromium/sandbox/win/src/sid.h
-@@ -47,16 +47,18 @@ class Sid {
-   // Create a Sid from a SDDL format string, such as S-1-1-0.
-   static Sid FromSddlString(const wchar_t* sddl_sid);
-   // Create a Sid from a set of sub authorities.
-   static Sid FromSubAuthorities(PSID_IDENTIFIER_AUTHORITY identifier_authority,
-                                 BYTE sub_authority_count,
-                                 PDWORD sub_authorities);
-   // Create the restricted all application packages sid.
-   static Sid AllRestrictedApplicationPackages();
-+  // Generate a random SID value.
-+  static Sid GenerateRandomSid();
- 
-   // Returns sid_.
-   PSID GetPSID() const;
- 
-   // Gets whether the sid is valid.
-   bool IsValid() const;
- 
-   // Converts the SID to a SDDL format string.

security/sandbox/chromium-shim/patches/with_update/allow_env_changes.patch

@@ -9,7 +9,7 @@ Bug 1297740.
 diff --git a/security/sandbox/chromium/sandbox/win/src/broker_services.cc b/security/sandbox/chromium/sandbox/win/src/broker_services.cc
 --- a/security/sandbox/chromium/sandbox/win/src/broker_services.cc
 +++ b/security/sandbox/chromium/sandbox/win/src/broker_services.cc
-@@ -414,16 +414,17 @@ DWORD WINAPI BrokerServicesBase::TargetE
+@@ -301,16 +301,17 @@ DWORD WINAPI BrokerServicesBase::TargetE
    NOTREACHED();
    return 0;
  }
@@ -27,7 +27,7 @@ diff --git a/security/sandbox/chromium/sandbox/win/src/broker_services.cc b/secu
      return SBOX_ERROR_BAD_PARAMS;
  
    if (!policy)
-@@ -609,17 +610,17 @@ ResultCode BrokerServicesBase::SpawnTarg
+@@ -486,17 +487,17 @@ ResultCode BrokerServicesBase::SpawnTarg
    // Brokerservices does not own the target object. It is owned by the Policy.
    base::win::ScopedProcessInformation process_info;
    TargetProcess* target = new TargetProcess(
@@ -65,9 +65,9 @@ diff --git a/security/sandbox/chromium/sandbox/win/src/broker_services.h b/secur
  #include "sandbox/win/src/crosscall_server.h"
  #include "sandbox/win/src/job.h"
  #include "sandbox/win/src/sandbox.h"
- #include "sandbox/win/src/sandbox_policy_base.h"
  #include "sandbox/win/src/sharedmem_ipc_server.h"
-@@ -39,16 +40,17 @@ class BrokerServicesBase final : public 
+ #include "sandbox/win/src/win2k_threadpool.h"
+@@ -45,16 +46,17 @@ class BrokerServicesBase final : public 
  
    ~BrokerServicesBase();
  
@@ -88,7 +88,7 @@ diff --git a/security/sandbox/chromium/sandbox/win/src/broker_services.h b/secur
 diff --git a/security/sandbox/chromium/sandbox/win/src/sandbox.h b/security/sandbox/chromium/sandbox/win/src/sandbox.h
 --- a/security/sandbox/chromium/sandbox/win/src/sandbox.h
 +++ b/security/sandbox/chromium/sandbox/win/src/sandbox.h
-@@ -84,16 +84,17 @@ class BrokerServices {
+@@ -79,16 +79,17 @@ class BrokerServices {
    //   parameter will hold the last Win32 error value.
    //   target: returns the resulting target process information such as process
    //   handle and PID just as if CreateProcess() had been called. The caller is
@@ -109,25 +109,7 @@ diff --git a/security/sandbox/chromium/sandbox/win/src/sandbox.h b/security/sand
 diff --git a/security/sandbox/chromium/sandbox/win/src/target_process.cc b/security/sandbox/chromium/sandbox/win/src/target_process.cc
 --- a/security/sandbox/chromium/sandbox/win/src/target_process.cc
 +++ b/security/sandbox/chromium/sandbox/win/src/target_process.cc
-@@ -9,16 +9,17 @@
- 
- #include <memory>
- #include <utility>
- #include <vector>
- 
- #include "base/macros.h"
- #include "base/memory/free_deleter.h"
- #include "base/numerics/safe_conversions.h"
-+#include "base/process/environment_internal.h"
- #include "base/win/startup_information.h"
- #include "base/win/windows_version.h"
- #include "sandbox/win/src/crosscall_client.h"
- #include "sandbox/win/src/crosscall_server.h"
- #include "sandbox/win/src/policy_low_level.h"
- #include "sandbox/win/src/restricted_token_utils.h"
- #include "sandbox/win/src/sandbox_types.h"
- #include "sandbox/win/src/security_capabilities.h"
-@@ -137,16 +138,17 @@ TargetProcess::~TargetProcess() {
+@@ -137,16 +137,17 @@ TargetProcess::~TargetProcess() {
  // Creates the target (child) process suspended and assigns it to the job
  // object.
  ResultCode TargetProcess::Create(
@@ -145,10 +127,10 @@ diff --git a/security/sandbox/chromium/sandbox/win/src/target_process.cc b/secur
  
    // Start the target process suspended.
    DWORD flags =
-@@ -156,22 +158,29 @@ ResultCode TargetProcess::Create(
+@@ -156,22 +157,29 @@ ResultCode TargetProcess::Create(
      flags |= EXTENDED_STARTUPINFO_PRESENT;
  
-   if (job_ && base::win::GetVersion() < base::win::Version::WIN8) {
+   if (job_ && base::win::GetVersion() < base::win::VERSION_WIN8) {
      // Windows 8 implements nested jobs, but for older systems we need to
      // break out of any job we're in to enforce our restrictions.
      flags |= CREATE_BREAKAWAY_FROM_JOB;
@@ -156,7 +138,7 @@ diff --git a/security/sandbox/chromium/sandbox/win/src/target_process.cc b/secur
  
 +  LPTCH original_environment = GetEnvironmentStrings();
 +  base::NativeEnvironmentString new_environment =
-+    base::internal::AlterEnvironment(original_environment, env_changes);
++    base::AlterEnvironment(original_environment, env_changes);
 +  // Ignore return value? What can we do?
 +  FreeEnvironmentStrings(original_environment);
 +  LPVOID new_env_ptr = (void*)new_environment.data();

security/sandbox/chromium-shim/patches/with_update/allow_read_only_all_paths_rule.patch

@@ -6,9 +6,7 @@
 # Parent  96707276b26997ea2a8e9fd8fdacc0c863717e7b
 Allow a special all paths rule in the Windows process sandbox when using semantics FILES_ALLOW_READONLY. r=jimm
 
-This also changes the read only related status checks in filesystem_interception.cc
-to include STATUS_NETWORK_OPEN_RESTRICTION (0xC0000201), which gets returned in
-some cases and fails because we never ask the broker.
+This also changes the read only related status checks in filesystem_interception.cc to include STATUS_NETWORK_OPEN_RESTRICTION (0xC0000201), which gets returned in some cases and fails because we never ask the broker.
 
 diff --git a/security/sandbox/chromium/sandbox/win/src/filesystem_interception.cc b/security/sandbox/chromium/sandbox/win/src/filesystem_interception.cc
 --- a/security/sandbox/chromium/sandbox/win/src/filesystem_interception.cc
@@ -54,7 +52,7 @@ diff --git a/security/sandbox/chromium/sandbox/win/src/filesystem_interception.c
  
    do {
      if (!ValidParameter(file, sizeof(HANDLE), WRITE))
-@@ -106,17 +111,18 @@ NTSTATUS WINAPI TargetNtOpenFile(NtOpenF
+@@ -106,17 +111,18 @@ NTSTATUS WINAPI TargetNtCreateFile(NtCre
                                   ACCESS_MASK desired_access,
                                   POBJECT_ATTRIBUTES object_attributes,
                                   PIO_STATUS_BLOCK io_status,
@@ -94,7 +92,7 @@ diff --git a/security/sandbox/chromium/sandbox/win/src/filesystem_interception.c
  
    do {
      if (!ValidParameter(file_attributes, sizeof(FILE_BASIC_INFORMATION), WRITE))
-@@ -232,17 +239,18 @@ TargetNtQueryAttributesFile(NtQueryAttri
+@@ -232,17 +239,18 @@ NTSTATUS WINAPI TargetNtQueryAttributesF
  
  NTSTATUS WINAPI TargetNtQueryFullAttributesFile(
      NtQueryFullAttributesFileFunction orig_QueryFullAttributes,
@@ -121,7 +119,7 @@ diff --git a/security/sandbox/chromium/sandbox/win/src/filesystem_policy.cc b/se
  bool FileSystemPolicy::GenerateRules(const wchar_t* name,
                                       TargetPolicy::Semantics semantics,
                                       LowLevelPolicy* policy) {
-   std::wstring mod_name(name);
+   base::string16 mod_name(name);
    if (mod_name.empty()) {
      return false;
    }

security/sandbox/chromium-shim/patches/with_update/fix_incorrect_int_use_in_Kernel32BaseVersion.patch

@@ -0,0 +1,40 @@
+# HG changeset patch
+# User Bob Owen <bobowencode@gmail.com>
+# Date 1549903491 0
+#      Mon Feb 11 16:44:51 2019 +0000
+# Node ID 3bb3e5a6275db53530d50549b7b329cc1248d450
+# Parent  fc9d5e40028058abeb06f8bdc2f75fc868fbe14b
+
+Fix incorrect int use in Kernel32BaseVersion in windows_version.cc. r=aklotz
+
+diff --git a/security/sandbox/chromium/base/win/windows_version.cc b/security/sandbox/chromium/base/win/windows_version.cc
+--- a/security/sandbox/chromium/base/win/windows_version.cc
++++ b/security/sandbox/chromium/base/win/windows_version.cc
+@@ -236,23 +236,23 @@ Version OSInfo::Kernel32Version() const 
+ // kernel32 will still be the "real" version.
+ base::Version OSInfo::Kernel32BaseVersion() const {
+   static const base::NoDestructor<base::Version> version([] {
+     std::unique_ptr<FileVersionInfoWin> file_version_info(
+         static_cast<FileVersionInfoWin*>(
+             FileVersionInfoWin::CreateFileVersionInfo(
+                 base::FilePath(FILE_PATH_LITERAL("kernel32.dll")))));
+     DCHECK(file_version_info);
+-    const int major =
++    const uint32_t major =
+         HIWORD(file_version_info->fixed_file_info()->dwFileVersionMS);
+-    const int minor =
++    const uint32_t minor =
+         LOWORD(file_version_info->fixed_file_info()->dwFileVersionMS);
+-    const int build =
++    const uint32_t build =
+         HIWORD(file_version_info->fixed_file_info()->dwFileVersionLS);
+-    const int patch =
++    const uint32_t patch =
+         LOWORD(file_version_info->fixed_file_info()->dwFileVersionLS);
+     return base::Version(std::vector<uint32_t>{major, minor, build, patch});
+   }());
+   return *version;
+ }
+ 
+ std::string OSInfo::processor_model_name() {
+   if (processor_model_name_.empty()) {

security/sandbox/chromium-shim/patches/with_update/ifdef_out_AppContainerProfileBase_testing_functions.patch

@@ -46,7 +46,7 @@ diff --git a/security/sandbox/chromium/sandbox/win/src/app_container_profile_bas
            GetModuleHandle(L"userenv"), "GetAppContainerFolderPath"));
    if (!get_app_container_folder_path)
      return false;
-   std::wstring sddl_str;
+   base::string16 sddl_str;
    if (!package_sid_.ToSddlString(&sddl_str))
      return false;
    base::win::ScopedCoMem<wchar_t> path_str;
@@ -62,7 +62,7 @@ diff --git a/security/sandbox/chromium/sandbox/win/src/app_container_profile_bas
 +#if defined(MOZ_SANDBOX)
 +  IMMEDIATE_CRASH();
 +#else
-   std::wstring sddl_str;
+   base::string16 sddl_str;
    if (!package_sid_.ToSddlString(&sddl_str))
      return false;
    *pipe_path = base::FilePath(base::StringPrintf(L"\\\\.\\pipe\\%ls\\%ls",

security/sandbox/chromium-shim/patches/with_update/ifdef_out_ApplyMitigationsToCurrentThread.patch

@@ -0,0 +1,52 @@
+# HG changeset patch
+# User Bob Owen <bobowencode@gmail.com>
+# Date 1509027042 -3600
+#      Thu Oct 26 15:10:42 2017 +0100
+# Node ID c4557696d42ef22c6eccfd178b3d739a265e2894
+# Parent  ec58d9068a540487e67c0eac2c60c53dea31d3c3
+Don't compile sandbox::ApplyMitigationsToCurrentThread. r=aklotz
+
+This brings in new dependencies via FilePath and we don't currently use it.
+As far as I can tell Chromium doesn't use it either.
+
+diff --git a/security/sandbox/chromium/sandbox/win/src/process_mitigations.cc b/security/sandbox/chromium/sandbox/win/src/process_mitigations.cc
+--- a/security/sandbox/chromium/sandbox/win/src/process_mitigations.cc
++++ b/security/sandbox/chromium/sandbox/win/src/process_mitigations.cc
+@@ -230,16 +230,19 @@ bool ApplyProcessMitigationsToCurrentPro
+         ERROR_ACCESS_DENIED != ::GetLastError()) {
+       return false;
+     }
+   }
+ 
+   return true;
+ }
+ 
++// This function isn't used yet and adds dependencies for FilePath and
++// ScopedNativeLibrary.
++#if !defined(MOZ_SANDBOX)
+ bool ApplyMitigationsToCurrentThread(MitigationFlags flags) {
+   if (!CanSetMitigationsPerThread(flags))
+     return false;
+ 
+   base::win::Version version = base::win::GetVersion();
+ 
+   if (version < base::win::VERSION_WIN10_RS1)
+     return true;
+@@ -263,16 +266,17 @@ bool ApplyMitigationsToCurrentThread(Mit
+     if (!set_thread_info_function(::GetCurrentThread(), ThreadDynamicCodePolicy,
+                                   &thread_policy, sizeof(thread_policy))) {
+       return false;
+     }
+   }
+ 
+   return true;
+ }
++#endif
+ 
+ void ConvertProcessMitigationsToPolicy(MitigationFlags flags,
+                                        DWORD64* policy_flags,
+                                        size_t* size) {
+   base::win::Version version = base::win::GetVersion();
+ 
+   *policy_flags = 0;
+ #if defined(_WIN64)

security/sandbox/chromium-shim/patches/with_update/ifdef_out_FromStringInternal.patch

@@ -14,10 +14,10 @@ https://hg.mozilla.org/mozilla-central/rev/477b991bf6fa7b4511768649c9bf37c7275d3
 diff --git a/security/sandbox/chromium/base/time/time.cc b/security/sandbox/chromium/base/time/time.cc
 --- a/security/sandbox/chromium/base/time/time.cc
 +++ b/security/sandbox/chromium/base/time/time.cc
-@@ -281,16 +281,17 @@ Time Time::Midnight(bool is_local) const
-     if (FromExploded(is_local, exploded, &out_time))
-       return out_time;
-   }
+@@ -241,16 +241,17 @@ Time Time::LocalMidnight() const {
+   Time out_time;
+   if (FromLocalExploded(exploded, &out_time))
+     return out_time;
    // This function must not fail.
    NOTREACHED();
    return Time();
@@ -32,7 +32,7 @@ diff --git a/security/sandbox/chromium/base/time/time.cc b/security/sandbox/chro
  
    if (time_string[0] == '\0')
      return false;
-@@ -301,16 +302,17 @@ bool Time::FromStringInternal(const char
+@@ -261,16 +262,17 @@ bool Time::FromStringInternal(const char
                                         &result_time);
    if (PR_SUCCESS != result)
      return false;

security/sandbox/chromium-shim/patches/with_update/lower_SDK_version_requirement.patch

@@ -1,34 +0,0 @@
-# HG changeset patch
-# User Toshihito Kikuchi <tkikuchi@mozilla.com>
-# Date 1588735588 25200
-#      Tue May 05 20:26:28 2020 -0700
-# Node ID 8214c0253f550d73b5e79dfd825b09f5c1a06fbd
-# Parent  2d5ee142bde533ba4f93afaae081a444eac0abe2
-Lower SDK version requirement from 19H1 to RS4. r=bobowen
-
-We still use 10.0.17134.0 SDK while Chromium requires 10.0.18362.0 or higher.
-
-diff --git a/security/sandbox/chromium/base/win/windows_version.cc b/security/sandbox/chromium/base/win/windows_version.cc
---- a/security/sandbox/chromium/base/win/windows_version.cc
-+++ b/security/sandbox/chromium/base/win/windows_version.cc
-@@ -17,18 +17,18 @@
- #include "base/strings/string_util.h"
- #include "base/strings/utf_string_conversions.h"
- #include "base/win/registry.h"
- 
- #if !defined(__clang__) && _MSC_FULL_VER < 191125507
- #error VS 2017 Update 3.2 or higher is required
- #endif
- 
--#if !defined(NTDDI_WIN10_19H1)
--#error Windows 10.0.18362.0 SDK or higher required.
-+#if !defined(NTDDI_WIN10_RS4)
-+#error Windows 10.0.17134.0 SDK or higher required.
- #endif
- 
- namespace base {
- namespace win {
- 
- namespace {
- 
- // The values under the CurrentVersion registry hive are mirrored under

security/sandbox/chromium-shim/patches/with_update/mingw_base_win_get_caller.patch

@@ -0,0 +1,37 @@
+# HG changeset patch
+# User Tom Ritter <tom@mozilla.com>
+# Date 1516824525 21600
+#      Wed Jan 24 14:08:45 2018 -0600
+# Node ID b09622ad2731f02ed7f231295bc9421d76b083e6
+# Parent  2b890d81a1e3ebc4872958022c8d425d5689b31d
+Bug 1432790 Remove a stray \ to fix the MinGW build. r?bobowen
+
+The GCC case includes a stray \ at the end of the line that gcc
+complains about.
+
+For reference purposes, this commit is a combination of Bug 1431621
+and Bug 1432790 combined together so that it looks like I hadn't
+screwed it up.
+
+diff --git a/security/sandbox/chromium/base/win/scoped_handle.h b/security/sandbox/chromium/base/win/scoped_handle.h
+--- a/security/sandbox/chromium/base/win/scoped_handle.h
++++ b/security/sandbox/chromium/base/win/scoped_handle.h
+@@ -13,17 +13,17 @@
+ #include "base/logging.h"
+ #include "base/macros.h"
+ 
+ // TODO(rvargas): remove this with the rest of the verifier.
+ #if defined(COMPILER_MSVC)
+ #include <intrin.h>
+ #define BASE_WIN_GET_CALLER _ReturnAddress()
+ #elif defined(COMPILER_GCC)
+-#define BASE_WIN_GET_CALLER __builtin_extract_return_addr(\\
++#define BASE_WIN_GET_CALLER __builtin_extract_return_addr(\
+     __builtin_return_address(0))
+ #endif
+ 
+ namespace base {
+ namespace win {
+ 
+ // Generic wrapper for raw handles that takes care of closing handles
+ // automatically. The class interface follows the style of

security/sandbox/chromium-shim/patches/with_update/mingw_capitalization.patch

@@ -32,10 +32,10 @@ diff --git a/security/sandbox/chromium/base/win/pe_image.h b/security/sandbox/ch
 --- a/security/sandbox/chromium/base/win/pe_image.h
 +++ b/security/sandbox/chromium/base/win/pe_image.h
 @@ -14,17 +14,17 @@
- #include <windows.h>
- 
  #include <stdint.h>
  
+ #include <windows.h>
+ 
  #if defined(_WIN32_WINNT_WIN8)
  // The Windows 8 SDK defines FACILITY_VISUALCPP in winerror.h.
  #undef FACILITY_VISUALCPP

security/sandbox/chromium-shim/patches/with_update/mingw_cast_getprocaddress.patch

@@ -20,14 +20,14 @@ diff --git a/security/sandbox/chromium/sandbox/win/src/target_process.cc b/secur
  #if SANDBOX_EXPORTS
    HMODULE module = ::LoadLibrary(exe_name_.get());
    if (!module)
-     return SBOX_ERROR_CANNOT_LOADLIBRARY_EXECUTABLE;
+     return SBOX_ERROR_GENERIC;
  
 -  child_var = ::GetProcAddress(module, name);
 +  child_var = reinterpret_cast<void*>(::GetProcAddress(module, name));
    ::FreeLibrary(module);
  
    if (!child_var)
-     return SBOX_ERROR_CANNOT_FIND_VARIABLE_ADDRESS;
+     return SBOX_ERROR_GENERIC;
  
    size_t offset =
        reinterpret_cast<char*>(child_var) - reinterpret_cast<char*>(module);

security/sandbox/chromium-shim/patches/with_update/mingw_offsetof.patch

@@ -11,7 +11,7 @@ MozReview-Commit-ID: D7REZiAIMpN
 diff --git a/security/sandbox/chromium/sandbox/win/src/crosscall_params.h b/security/sandbox/chromium/sandbox/win/src/crosscall_params.h
 --- a/security/sandbox/chromium/sandbox/win/src/crosscall_params.h
 +++ b/security/sandbox/chromium/sandbox/win/src/crosscall_params.h
-@@ -78,16 +78,17 @@ union MultiType {
+@@ -61,16 +61,17 @@ union MultiType {
    ULONG_PTR ulong_ptr;
  };
  
@@ -29,9 +29,9 @@ diff --git a/security/sandbox/chromium/sandbox/win/src/crosscall_params.h b/secu
    uint32_t offset_;
    uint32_t size_;
  };
-@@ -287,16 +288,18 @@ class ActualCallParams : public CrossCal
+@@ -271,16 +272,18 @@ class ActualCallParams : public CrossCal
   protected:
-   ActualCallParams() : CrossCallParams(IpcTag::UNUSED, NUMBER_PARAMS) {}
+   ActualCallParams() : CrossCallParams(0, NUMBER_PARAMS) { }
  
   private:
    ParamInfo param_info_[NUMBER_PARAMS + 1];
@@ -167,7 +167,7 @@ diff --git a/security/sandbox/chromium/sandbox/win/src/crosscall_server.cc b/sec
      // Avoid compiler optimizations across this point. Any value stored in
      // memory should be stored for real, and values previously read from memory
      // should be actually read.
-     std::atomic_thread_fence(std::memory_order_seq_cst);
+     base::subtle::MemoryBarrier();
  
 -    min_declared_size =
 -        sizeof(CrossCallParams) + ((param_count + 1) * sizeof(ParamInfo));

security/sandbox/chromium-shim/patches/with_update/mingw_undefine_MemoryBarrier.patch

@@ -0,0 +1,52 @@
+# HG changeset patch
+# User Bob Owen <bobowencode@gmail.com>
+# Date 1558340081 -3600
+#      Mon May 20 09:14:41 2019 +0100
+# Node ID ba49022852e0cd13ddb6afa501b61c1f603d60b7
+# Parent  672e222dce87dd64c3e2a1381d16aec71b21aef6
+Bug 1552160: always undefine MemoryBarrier in Windows sandbox on MinGW.
+
+diff --git a/security/sandbox/chromium/base/atomicops.h b/security/sandbox/chromium/base/atomicops.h
+--- a/security/sandbox/chromium/base/atomicops.h
++++ b/security/sandbox/chromium/base/atomicops.h
+@@ -34,17 +34,17 @@
+ // identify the STL implementation.
+ // - libc++: captures __config for _LIBCPP_VERSION
+ // - libstdc++: captures bits/c++config.h for __GLIBCXX__
+ #include <cstddef>
+ 
+ #include "base/base_export.h"
+ #include "build/build_config.h"
+ 
+-#if defined(OS_WIN) && defined(ARCH_CPU_64_BITS)
++#if defined(OS_WIN) && (defined(ARCH_CPU_64_BITS) || defined(__MINGW32__))
+ // windows.h #defines this (only on x64). This causes problems because the
+ // public API also uses MemoryBarrier at the public name for this fence. So, on
+ // X64, undef it, and call its documented
+ // (http://msdn.microsoft.com/en-us/library/windows/desktop/ms684208.aspx)
+ // implementation directly.
+ #undef MemoryBarrier
+ #endif
+ 
+diff --git a/security/sandbox/chromium/base/atomicops_internals_x86_msvc.h b/security/sandbox/chromium/base/atomicops_internals_x86_msvc.h
+--- a/security/sandbox/chromium/base/atomicops_internals_x86_msvc.h
++++ b/security/sandbox/chromium/base/atomicops_internals_x86_msvc.h
+@@ -9,17 +9,17 @@
+ 
+ #include "base/win/windows_types.h"
+ 
+ #include <intrin.h>
+ 
+ #include "base/macros.h"
+ #include "build/build_config.h"
+ 
+-#if defined(ARCH_CPU_64_BITS)
++#if defined(ARCH_CPU_64_BITS) || defined(__MINGW32__)
+ // windows.h #defines this (only on x64). This causes problems because the
+ // public API also uses MemoryBarrier at the public name for this fence. So, on
+ // X64, undef it, and call its documented
+ // (http://msdn.microsoft.com/en-us/library/windows/desktop/ms684208.aspx)
+ // implementation directly.
+ #undef MemoryBarrier
+ #endif
+ 

security/sandbox/chromium-shim/patches/with_update/patch_order.txt

@@ -1,28 +1,28 @@
+update_chromium_linux_x86_syscalls.patch
 revert_remove_AddTargetPeer.patch
 revert_remove_BrokerDuplicateHandle.patch
-replace_ScopedNativeLibrary_in_ApplyMitigationsToCurrentThread.patch
+ifdef_out_ApplyMitigationsToCurrentThread.patch
 ifdef_out_FromStringInternal.patch
 add_option_to_not_use_restricting_sids.patch
 ifdef_out_SequenceChecker_code.patch
 allow_read_only_all_paths_rule.patch
 revert_TargetNtSetInformationThread_change.patch
+mingw_base_win_get_caller.patch
 mingw_copy_s.patch
 mingw_operator_new.patch
 mingw_cast_getprocaddress.patch
 mingw_capitalization.patch
 mingw_disable_one_try.patch
 mingw_offsetof.patch
+fix_incorrect_int_use_in_Kernel32BaseVersion.patch
+revert_removal_of_AlterEnvironment_on_Windows.patch
 allow_env_changes.patch
 ifdef_out_AppContainerProfileBase_testing_functions.patch
 mingw_missing_windows_types_defines.patch
+mingw_undefine_MemoryBarrier.patch
 add_return_in_QueryCancellationTraitsForNonCancellables_to_satisfy_build.patch
 include_atomic_header_in_platform_thread.patch
 aarch64_control_flow_guard.patch
 revert_removal_of_app_dir_for_DLL_load.patch
 more_chromium_linux_x86_x64_syscalls.patch
-add_support_for_random_restricted_SID.patch
-revert_Token_serialization_and_deserialization.patch
-remove_unused_functions_from_StrtodTrimmed.patch
-remove_extraneous_backslash_introduced_by_clang_tidy.patch
-remove_include_delayimp_h_from_pe_image_cc.patch
-lower_SDK_version_requirement.patch
+public_siginfo_fields.patch

security/sandbox/chromium-shim/patches/with_update/public_siginfo_fields.patch

@@ -0,0 +1,52 @@
+# HG changeset patch
+# User Michael Forney <mforney@mforney.org>
+# Date 1581009438 0
+#      Thu Feb 06 17:17:18 2020 +0000
+# Node ID 3ec8c96f4d53916de5223b2eda5e8d66fb6ca227
+# Parent  362056ef41086e1faf6ee088c1daef9c73e01370
+Bug 1611565 - Cherry-pick upstream patch to use public siginfo_t fields r=gcp
+
+Upstream patch:
+https://chromium.googlesource.com/chromium/src.git/+/6bd491daaf28a8281136931133504c23a18f819f%5E%21/#F0
+
+_sifields is a glibc-internal field, and is not available on musl
+libc. Instead, use the public-facing fields si_call_addr, si_syscall,
+and si_arch, if they are available.
+
+Differential Revision: https://phabricator.services.mozilla.com/D61051
+
+diff --git a/security/sandbox/chromium/sandbox/linux/seccomp-bpf/trap.cc b/security/sandbox/chromium/sandbox/linux/seccomp-bpf/trap.cc
+--- a/security/sandbox/chromium/sandbox/linux/seccomp-bpf/trap.cc
++++ b/security/sandbox/chromium/sandbox/linux/seccomp-bpf/trap.cc
+@@ -159,21 +159,28 @@ void Trap::SigSys(int nr, LinuxSigInfo* 
+     // See crbug.com/178166.
+     // TODO(jln): add a DCHECK or move back to FATAL.
+     RAW_LOG(ERROR, "Unexpected SIGSYS received.");
+     errno = old_errno;
+     return;
+   }
+ 
+ 
+-  // Obtain the siginfo information that is specific to SIGSYS. Unfortunately,
+-  // most versions of glibc don't include this information in siginfo_t. So,
+-  // we need to explicitly copy it into a arch_sigsys structure.
++  // Obtain the siginfo information that is specific to SIGSYS.
+   struct arch_sigsys sigsys;
++#if defined(si_call_addr) && !defined(__native_client_nonsfi__)
++  sigsys.ip = info->si_call_addr;
++  sigsys.nr = info->si_syscall;
++  sigsys.arch = info->si_arch;
++#else
++  // If the version of glibc doesn't include this information in
++  // siginfo_t (older than 2.17), we need to explicitly copy it
++  // into an arch_sigsys structure.
+   memcpy(&sigsys, &info->_sifields, sizeof(sigsys));
++#endif
+ 
+ #if defined(__mips__)
+   // When indirect syscall (syscall(__NR_foo, ...)) is made on Mips, the
+   // number in register SECCOMP_SYSCALL(ctx) is always __NR_syscall and the
+   // real number of a syscall (__NR_foo) is in SECCOMP_PARM1(ctx)
+   bool sigsys_nr_is_bad = sigsys.nr != static_cast<int>(SECCOMP_SYSCALL(ctx)) &&
+                           sigsys.nr != static_cast<int>(SECCOMP_PARM1(ctx));
+ #else

security/sandbox/chromium-shim/patches/with_update/remove_extraneous_backslash_introduced_by_clang_tidy.patch

@@ -1,34 +0,0 @@
-# HG changeset patch
-# User Toshihito Kikuchi <tkikuchi@mozilla.com>
-# Date 1588867789 25200
-#      Thu May 07 09:09:49 2020 -0700
-# Node ID 29fbfefe6f5f533fb5aa4339015cea4746ad6493
-# Parent  044c15e89ecca19afc1750c439f4e82879679462
-Remove Extraneous Backslash Introduced by clang-tidy in ScopedHandle. r=bobowen
-
-Need the following commit to compile with Mingw, which has not reached
-the stable channel yet.
-https://chromium.googlesource.com/chromium/src.git/+/1620fe70c299f1f18b2f2c652d16739f6e3c5f78
-
-diff --git a/security/sandbox/chromium/base/win/scoped_handle.h b/security/sandbox/chromium/base/win/scoped_handle.h
---- a/security/sandbox/chromium/base/win/scoped_handle.h
-+++ b/security/sandbox/chromium/base/win/scoped_handle.h
-@@ -15,17 +15,17 @@
- #include "base/macros.h"
- 
- // TODO(rvargas): remove this with the rest of the verifier.
- #if defined(COMPILER_MSVC)
- #include <intrin.h>
- #define BASE_WIN_GET_CALLER _ReturnAddress()
- #elif defined(COMPILER_GCC)
- #define BASE_WIN_GET_CALLER \
--  __builtin_extract_return_addr(\ __builtin_return_address(0))
-+  __builtin_extract_return_addr(__builtin_return_address(0))
- #endif
- 
- namespace base {
- namespace win {
- 
- // Generic wrapper for raw handles that takes care of closing handles
- // automatically. The class interface follows the style of
- // the ScopedFILE class with two additions:

security/sandbox/chromium-shim/patches/with_update/remove_include_delayimp_h_from_pe_image_cc.patch

@@ -1,32 +0,0 @@
-# HG changeset patch
-# User Toshihito Kikuchi <tkikuchi@mozilla.com>
-# Date 1588871424 25200
-#      Thu May 07 10:10:24 2020 -0700
-# Node ID 2d5ee142bde533ba4f93afaae081a444eac0abe2
-# Parent  29fbfefe6f5f533fb5aa4339015cea4746ad6493
-Don't include delayimp.h twice from //base/win/pe_image.cc to compile with Mingw. r=bobowen
-
-The second include was introduced by
-https://chromium.googlesource.com/chromium/src.git/+/5c23d46846111ea16aaf2a9b45355cca5ddbf6d8
-
-diff --git a/security/sandbox/chromium/base/win/pe_image.cc b/security/sandbox/chromium/base/win/pe_image.cc
---- a/security/sandbox/chromium/base/win/pe_image.cc
-+++ b/security/sandbox/chromium/base/win/pe_image.cc
-@@ -2,17 +2,16 @@
- // Use of this source code is governed by a BSD-style license that can be
- // found in the LICENSE file.
- 
- // This file implements PEImage, a generic class to manipulate PE files.
- // This file was adapted from GreenBorder's Code.
- 
- #include "base/win/pe_image.h"
- 
--#include <delayimp.h>
- #include <stddef.h>
- #include <set>
- #include <string>
- 
- #include "base/no_destructor.h"
- #include "base/win/current_module.h"
- 
- namespace base {

security/sandbox/chromium-shim/patches/with_update/remove_unused_functions_from_StrtodTrimmed.patch

@@ -1,48 +0,0 @@
-# HG changeset patch
-# User Toshihito Kikuchi <tkikuchi@mozilla.com>
-# Date 1588733379 25200
-#      Tue May 05 19:49:39 2020 -0700
-# Node ID 044c15e89ecca19afc1750c439f4e82879679462
-# Parent  a18431660425e41c26c716413aac0294987c985a
-Remove unused functions from //base/third_party/double_conversion/double-conversion to compile. r=bobowen
-
-diff --git a/security/sandbox/chromium/base/third_party/double_conversion/double-conversion/strtod.cc b/security/sandbox/chromium/base/third_party/double_conversion/double-conversion/strtod.cc
---- a/security/sandbox/chromium/base/third_party/double_conversion/double-conversion/strtod.cc
-+++ b/security/sandbox/chromium/base/third_party/double_conversion/double-conversion/strtod.cc
-@@ -445,36 +445,18 @@ static bool ComputeGuess(Vector<const ch
-     return true;
-   }
-   if (*guess == Double::Infinity()) {
-     return true;
-   }
-   return false;
- }
- 
--static bool IsDigit(const char d) {
--  return ('0' <= d) && (d <= '9');
--}
--
--static bool IsNonZeroDigit(const char d) {
--  return ('1' <= d) && (d <= '9');
--}
--
--static bool AssertTrimmedDigits(const Vector<const char>& buffer) {
--  for(int i = 0; i < buffer.length(); ++i) {
--    if(!IsDigit(buffer[i])) {
--      return false;
--    }
--  }
--  return (buffer.length() == 0) || (IsNonZeroDigit(buffer[0]) && IsNonZeroDigit(buffer[buffer.length()-1]));
--}
--
- double StrtodTrimmed(Vector<const char> trimmed, int exponent) {
-   DOUBLE_CONVERSION_ASSERT(trimmed.length() <= kMaxSignificantDecimalDigits);
--  DOUBLE_CONVERSION_ASSERT(AssertTrimmedDigits(trimmed));
-   double guess;
-   const bool is_correct = ComputeGuess(trimmed, exponent, &guess);
-   if (is_correct) {
-     return guess;
-   }
-   DiyFp upper_boundary = Double(guess).UpperBoundary();
-   int comparison = CompareBufferWithDiyFp(trimmed, exponent, upper_boundary);
-   if (comparison < 0) {

security/sandbox/chromium-shim/patches/with_update/replace_ScopedNativeLibrary_in_ApplyMitigationsToCurrentThread.patch

@@ -1,59 +0,0 @@
-# HG changeset patch
-# User Toshihito Kikuchi <tkikuchi@mozilla.com>
-# Date 1589672273 25200
-#      Sat May 16 16:37:53 2020 -0700
-# Node ID c14ef8304c36fdc2570b77b63b36114cff2d070d
-# Parent  90b5f63770f52fab163adaed1d5812b2887b335a
-Use GetModuleHandle/GetProcAddress in ApplyMitigationsToCurrentThread. r=bobowen
-
-This patch removes the use of base::ScopedNativeLibrary from
-sandbox::ApplyMitigationsToCurrentThread because to avoid
-new dependencies.
-
-diff --git a/security/sandbox/chromium/sandbox/win/src/process_mitigations.cc b/security/sandbox/chromium/sandbox/win/src/process_mitigations.cc
---- a/security/sandbox/chromium/sandbox/win/src/process_mitigations.cc
-+++ b/security/sandbox/chromium/sandbox/win/src/process_mitigations.cc
-@@ -5,18 +5,16 @@
- #include "sandbox/win/src/process_mitigations.h"
- 
- #include <stddef.h>
- #include <windows.h>
- #include <wow64apiset.h>
- 
- #include <algorithm>
- 
--#include "base/files/file_path.h"
--#include "base/scoped_native_library.h"
- #include "base/win/windows_version.h"
- #include "build/build_config.h"
- #include "sandbox/win/src/nt_internals.h"
- #include "sandbox/win/src/restricted_token_utils.h"
- #include "sandbox/win/src/sandbox_rand.h"
- #include "sandbox/win/src/win_utils.h"
- 
- namespace {
-@@ -321,22 +319,19 @@ bool ApplyMitigationsToCurrentThread(Mit
-     return true;
- 
-   // Enable dynamic code per-thread policies.
-   if (flags & MITIGATION_DYNAMIC_CODE_OPT_OUT_THIS_THREAD) {
-     DWORD thread_policy = THREAD_DYNAMIC_CODE_ALLOW;
- 
-     // NOTE: SetThreadInformation API only exists on >= Win8.  Dynamically
-     //       get function handle.
--    base::ScopedNativeLibrary dll(base::FilePath(L"kernel32.dll"));
--    if (!dll.is_valid())
--      return false;
-     SetThreadInformationFunction set_thread_info_function =
--        reinterpret_cast<SetThreadInformationFunction>(
--            dll.GetFunctionPointer("SetThreadInformation"));
-+        reinterpret_cast<SetThreadInformationFunction>(::GetProcAddress(
-+            ::GetModuleHandleA("kernel32.dll"), "SetThreadInformation"));
-     if (!set_thread_info_function)
-       return false;
- 
-     // NOTE: Must use the pseudo-handle here, a thread HANDLE won't work.
-     if (!set_thread_info_function(::GetCurrentThread(), ThreadDynamicCodePolicy,
-                                   &thread_policy, sizeof(thread_policy))) {
-       return false;
-     }

security/sandbox/chromium-shim/patches/with_update/revert_Token_serialization_and_deserialization.patch

@@ -1,100 +0,0 @@
-# HG changeset patch
-# User Toshihito Kikuchi <tkikuchi@mozilla.com>
-# Date 1588530677 25200
-#      Sun May 03 11:31:17 2020 -0700
-# Node ID a18431660425e41c26c716413aac0294987c985a
-# Parent  e149b1937231ccc3c1c07f45acf0e7e71117854f
-Revert chromium's ffe1d0eb42d1d75f2b6a3b4145eff69f235a19ee. r=bobowen
-
-Undoing the following commit as it brings more dependency but unused in our code.
-https://chromium.googlesource.com/chromium/src.git/+/ffe1d0eb42d1d75f2b6a3b4145eff69f235a19ee
-
-diff --git a/security/sandbox/chromium/base/token.cc b/security/sandbox/chromium/base/token.cc
---- a/security/sandbox/chromium/base/token.cc
-+++ b/security/sandbox/chromium/base/token.cc
-@@ -1,17 +1,16 @@
- // Copyright 2018 The Chromium Authors. All rights reserved.
- // Use of this source code is governed by a BSD-style license that can be
- // found in the LICENSE file.
- 
- #include "base/token.h"
- 
- #include <inttypes.h>
- 
--#include "base/pickle.h"
- #include "base/rand_util.h"
- #include "base/strings/stringprintf.h"
- 
- namespace base {
- 
- // static
- Token Token::CreateRandom() {
-   Token token;
-@@ -21,26 +20,9 @@ Token Token::CreateRandom() {
-   base::RandBytes(&token, sizeof(token));
-   return token;
- }
- 
- std::string Token::ToString() const {
-   return base::StringPrintf("%016" PRIX64 "%016" PRIX64, high_, low_);
- }
- 
--void WriteTokenToPickle(Pickle* pickle, const Token& token) {
--  pickle->WriteUInt64(token.high());
--  pickle->WriteUInt64(token.low());
--}
--
--Optional<Token> ReadTokenFromPickle(PickleIterator* pickle_iterator) {
--  uint64_t high;
--  if (!pickle_iterator->ReadUInt64(&high))
--    return nullopt;
--
--  uint64_t low;
--  if (!pickle_iterator->ReadUInt64(&low))
--    return nullopt;
--
--  return Token(high, low);
--}
--
- }  // namespace base
-diff --git a/security/sandbox/chromium/base/token.h b/security/sandbox/chromium/base/token.h
---- a/security/sandbox/chromium/base/token.h
-+++ b/security/sandbox/chromium/base/token.h
-@@ -7,17 +7,16 @@
- 
- #include <stdint.h>
- 
- #include <iosfwd>
- #include <tuple>
- 
- #include "base/base_export.h"
- #include "base/hash/hash.h"
--#include "base/optional.h"
- 
- namespace base {
- 
- // A Token is a randomly chosen 128-bit integer. This class supports generation
- // from a cryptographically strong random source, or constexpr construction over
- // fixed values (e.g. to store a pre-generated constant value). Tokens are
- // similar in spirit and purpose to UUIDs, without many of the constraints and
- // expectations (such as byte layout and string representation) clasically
-@@ -63,19 +62,11 @@ class BASE_EXPORT Token {
- 
- // For use in std::unordered_map.
- struct TokenHash {
-   size_t operator()(const base::Token& token) const {
-     return base::HashInts64(token.high(), token.low());
-   }
- };
- 
--class Pickle;
--class PickleIterator;
--
--// For serializing and deserializing Token values.
--BASE_EXPORT void WriteTokenToPickle(Pickle* pickle, const Token& token);
--BASE_EXPORT Optional<Token> ReadTokenFromPickle(
--    PickleIterator* pickle_iterator);
--
- }  // namespace base
- 
- #endif  // BASE_TOKEN_H_

security/sandbox/chromium-shim/patches/with_update/revert_removal_of_AlterEnvironment_on_Windows.patch

@@ -0,0 +1,150 @@
+# HG changeset patch
+# User Bob Owen <bobowencode@gmail.com>
+# Date 1560256605 -3600
+#      Tue Jun 11 13:36:45 2019 +0100
+# Node ID 686d4b711b65b7cd8692e92e9a7ae152a942b69e
+# Parent  213d707af158b3d276c8cce56aba2e3c27abda82
+Bug 1552160: Revert removal of AlterEnvironment from chromium code on Windows. r=jld
+
+diff --git a/security/sandbox/chromium/base/environment.cc b/security/sandbox/chromium/base/environment.cc
+--- a/security/sandbox/chromium/base/environment.cc
++++ b/security/sandbox/chromium/base/environment.cc
+@@ -96,34 +96,32 @@ class EnvironmentImpl : public Environme
+     return !!SetEnvironmentVariable(UTF8ToWide(variable_name).c_str(), nullptr);
+ #elif defined(OS_POSIX) || defined(OS_FUCHSIA)
+     // On success, zero is returned.
+     return !unsetenv(variable_name.data());
+ #endif
+   }
+ };
+ 
+-#if defined(OS_POSIX) || defined(OS_FUCHSIA)
+ // Parses a null-terminated input string of an environment block. The key is
+ // placed into the given string, and the total length of the line, including
+ // the terminating null, is returned.
+ size_t ParseEnvLine(const NativeEnvironmentString::value_type* input,
+                     NativeEnvironmentString* key) {
+   // Skip to the equals or end of the string, this is the key.
+   size_t cur = 0;
+   while (input[cur] && input[cur] != '=')
+     cur++;
+   *key = NativeEnvironmentString(&input[0], cur);
+ 
+   // Now just skip to the end of the string.
+   while (input[cur])
+     cur++;
+   return cur + 1;
+ }
+-#endif
+ 
+ }  // namespace
+ 
+ namespace env_vars {
+ 
+ #if defined(OS_POSIX) || defined(OS_FUCHSIA)
+ // On Posix systems, this variable contains the location of the user's home
+ // directory. (e.g, /home/username/).
+@@ -138,17 +136,57 @@ Environment::~Environment() = default;
+ std::unique_ptr<Environment> Environment::Create() {
+   return std::make_unique<EnvironmentImpl>();
+ }
+ 
+ bool Environment::HasVar(StringPiece variable_name) {
+   return GetVar(variable_name, nullptr);
+ }
+ 
+-#if defined(OS_POSIX) || defined(OS_FUCHSIA)
++#if defined(OS_WIN)
++
++string16 AlterEnvironment(const wchar_t* env,
++                          const EnvironmentMap& changes) {
++  string16 result;
++
++  // First copy all unmodified values to the output.
++  size_t cur_env = 0;
++  string16 key;
++  while (env[cur_env]) {
++    const wchar_t* line = &env[cur_env];
++    size_t line_length = ParseEnvLine(line, &key);
++
++    // Keep only values not specified in the change vector.
++    EnvironmentMap::const_iterator found_change = changes.find(key);
++    if (found_change == changes.end())
++      result.append(line, line_length);
++
++    cur_env += line_length;
++  }
++
++  // Now append all modified and new values.
++  for (EnvironmentMap::const_iterator i = changes.begin();
++       i != changes.end(); ++i) {
++    if (!i->second.empty()) {
++      result.append(i->first);
++      result.push_back('=');
++      result.append(i->second);
++      result.push_back(0);
++    }
++  }
++
++  // An additional null marks the end of the list. We always need a double-null
++  // in case nothing was added above.
++  if (result.empty())
++    result.push_back(0);
++  result.push_back(0);
++  return result;
++}
++
++#elif defined(OS_POSIX) || defined(OS_FUCHSIA)
+ 
+ std::unique_ptr<char* []> AlterEnvironment(const char* const* const env,
+                                            const EnvironmentMap& changes) {
+   std::string value_storage;  // Holds concatenated null-terminated strings.
+   std::vector<size_t> result_indices;  // Line indices into value_storage.
+ 
+   // First build up all of the unchanged environment strings. These are
+   // null-terminated of the form "key=value".
+diff --git a/security/sandbox/chromium/base/environment.h b/security/sandbox/chromium/base/environment.h
+--- a/security/sandbox/chromium/base/environment.h
++++ b/security/sandbox/chromium/base/environment.h
+@@ -48,27 +48,36 @@ class BASE_EXPORT Environment {
+ 
+ 
+ #if defined(OS_WIN)
+ 
+ typedef string16 NativeEnvironmentString;
+ typedef std::map<NativeEnvironmentString, NativeEnvironmentString>
+     EnvironmentMap;
+ 
++// Returns a modified environment vector constructed from the given environment
++// and the list of changes given in |changes|. Each key in the environment is
++// matched against the first element of the pairs. In the event of a match, the
++// value is replaced by the second of the pair, unless the second is empty, in
++// which case the key-value is removed.
++//
++// This Windows version takes and returns a Windows-style environment block
++// which is a concatenated list of null-terminated 16-bit strings. The end is
++// marked by a double-null terminator. The size of the returned string will
++// include the terminators.
++BASE_EXPORT string16 AlterEnvironment(const wchar_t* env,
++                                      const EnvironmentMap& changes);
++
+ #elif defined(OS_POSIX) || defined(OS_FUCHSIA)
+ 
+ typedef std::string NativeEnvironmentString;
+ typedef std::map<NativeEnvironmentString, NativeEnvironmentString>
+     EnvironmentMap;
+ 
+-// Returns a modified environment vector constructed from the given environment
+-// and the list of changes given in |changes|. Each key in the environment is
+-// matched against the first element of the pairs. In the event of a match, the
+-// value is replaced by the second of the pair, unless the second is empty, in
+-// which case the key-value is removed.
++// See general comments for the Windows version above.
+ //
+ // This Posix version takes and returns a Posix-style environment block, which
+ // is a null-terminated list of pointers to null-terminated strings. The
+ // returned array will have appended to it the storage for the array itself so
+ // there is only one pointer to manage, but this means that you can't copy the
+ // array without keeping the original around.
+ BASE_EXPORT std::unique_ptr<char* []> AlterEnvironment(
+     const char* const* env,

security/sandbox/chromium-shim/patches/with_update/revert_remove_AddTargetPeer.patch

@@ -1,53 +1,88 @@
 # HG changeset patch
-# User Toshihito Kikuchi <tkikuchi@mozilla.com>
-# Date 1589671259 25200
-#      Sat May 16 16:20:59 2020 -0700
-# Node ID 0b5183a01df78cc85264f2eae2c4d8e407bb1112
-# Parent  d093cd9ccfcf06f4a1f0d7f1a4bd0f143ef92b4b
-Add BrokerServicesBase::IsSafeDuplicationTarget. r=bobowen
+# User Bob Owen <bobowencode@gmail.com>
+# Date 1485985799 0
+#      Wed Feb 01 21:49:59 2017 +0000
+# Node ID 8faee368c603dab03076d8900f01acfd776caaeb
+# Parent  dba4611d335189b9a3314f5dc57935f554c8b945
+Reinstate sandbox::BrokerServices::AddTargetPeer r=aklotz
 
-This patch adds BrokerServicesBase::IsSafeDuplicationTarget and
-BrokerServicesBase::AddTargetPeer using the new ProcessTracker introduced by
-https://chromium.googlesource.com/chromium/src.git/+/3d8382cf9dd44cf9c05e43e42c500f4825e1fed8
-We need these methods for HandlePolicy which is added as a different patch.
-
-Chromium used to have AddTargetPeer and IsActiveTarget, but removed by
-the following commits because they were no longer used in Chromium.
-https://chromium.googlesource.com/chromium/src.git/+/996b42db5296bd3d11b3d7fde1a4602bbcefed2c
-https://chromium.googlesource.com/chromium/src.git/+/e615a1152ac6e10f1a91f0629fb8b5ca223ffbdc
+This is basically a revert of chromium commit 996b42db5296bd3d11b3d7fde1a4602bbcefed2c.
 
 diff --git a/security/sandbox/chromium/sandbox/win/src/broker_services.cc b/security/sandbox/chromium/sandbox/win/src/broker_services.cc
 --- a/security/sandbox/chromium/sandbox/win/src/broker_services.cc
 +++ b/security/sandbox/chromium/sandbox/win/src/broker_services.cc
-@@ -154,16 +154,18 @@ namespace sandbox {
+@@ -41,16 +41,17 @@ sandbox::ResultCode SpawnCleanup(sandbox
+   delete target;
+   return sandbox::SBOX_ERROR_GENERIC;
+ }
+ 
+ // the different commands that you can send to the worker thread that
+ // executes TargetEventsThread().
+ enum {
+   THREAD_CTRL_NONE,
++  THREAD_CTRL_REMOVE_PEER,
+   THREAD_CTRL_QUIT,
+   THREAD_CTRL_LAST,
+ };
+ 
+ // Helper structure that allows the Broker to associate a job notification
+ // with a job object and with a policy.
+ struct JobTracker {
+   JobTracker(base::win::ScopedHandle job,
+@@ -77,16 +78,37 @@ void JobTracker::FreeResources() {
+     HANDLE stale_job_handle = job.Get();
+     job.Close();
+ 
+     // In OnJobEmpty() we don't actually use the job handle directly.
+     policy->OnJobEmpty(stale_job_handle);
+     policy = nullptr;
+   }
+ }
++ 
++// Helper structure that allows the broker to track peer processes
++struct PeerTracker {
++  PeerTracker(DWORD process_id, HANDLE broker_job_port)
++      : wait_object(NULL), id(process_id), job_port(broker_job_port) {
++  }
++
++  HANDLE wait_object;
++  base::win::ScopedHandle process;
++  DWORD id;
++  HANDLE job_port;
++};
++
++void DeregisterPeerTracker(PeerTracker* peer) {
++  // Deregistration shouldn't fail, but we leak rather than crash if it does.
++  if (::UnregisterWaitEx(peer->wait_object, INVALID_HANDLE_VALUE)) {
++    delete peer;
++  } else {
++    NOTREACHED();
++  }
++}
+ 
+ }  // namespace
+ 
+ namespace sandbox {
+ 
  BrokerServicesBase::BrokerServicesBase() {}
  
  // The broker uses a dedicated worker thread that services the job completion
- // port to perform policy notifications and associated cleanup tasks.
- ResultCode BrokerServicesBase::Init() {
-   if (job_port_.IsValid() || thread_pool_)
-     return SBOX_ERROR_UNEXPECTED_CALL;
- 
-+  ::InitializeCriticalSection(&lock_);
-+
-   job_port_.Set(::CreateIoCompletionPort(INVALID_HANDLE_VALUE, nullptr, 0, 0));
-   if (!job_port_.IsValid())
-     return SBOX_ERROR_CANNOT_INIT_BROKERSERVICES;
- 
-   no_targets_.Set(::CreateEventW(nullptr, true, false, nullptr));
- 
-   job_thread_.Set(::CreateThread(nullptr, 0,  // Default security and stack.
-                                  TargetEventsThread, this, 0, nullptr));
-@@ -191,16 +193,17 @@ BrokerServicesBase::~BrokerServicesBase(
- 
-   if (job_thread_.IsValid() &&
-       WAIT_TIMEOUT == ::WaitForSingleObject(job_thread_.Get(), 1000)) {
+@@ -132,16 +154,22 @@ BrokerServicesBase::~BrokerServicesBase(
      // Cannot clean broker services.
      NOTREACHED();
      return;
    }
+ 
+   tracker_list_.clear();
    thread_pool_.reset();
-+  ::DeleteCriticalSection(&lock_);
+ 
++  // Cancel the wait events and delete remaining peer trackers.
++  for (PeerTrackerMap::iterator it = peer_map_.begin();
++       it != peer_map_.end(); ++it) {
++    DeregisterPeerTracker(it->second);
++  }
++
+   ::DeleteCriticalSection(&lock_);
  }
  
  scoped_refptr<TargetPolicy> BrokerServicesBase::CreatePolicy() {
@@ -55,99 +90,45 @@ diff --git a/security/sandbox/chromium/sandbox/win/src/broker_services.cc b/secu
    // change the downcast to it in SpawnTarget().
    scoped_refptr<TargetPolicy> policy(new PolicyBase);
    // PolicyBase starts with refcount 1.
-   policy->Release();
-@@ -283,16 +286,21 @@ DWORD WINAPI BrokerServicesBase::TargetE
-           if (1 == target_counter) {
-             ::ResetEvent(no_targets);
-           }
+@@ -247,16 +275,23 @@ DWORD WINAPI BrokerServicesBase::TargetE
            break;
          }
  
-         case JOB_OBJECT_MSG_EXIT_PROCESS:
-         case JOB_OBJECT_MSG_ABNORMAL_EXIT_PROCESS: {
-+          {
-+            AutoLock lock(&broker->lock_);
-+            broker->active_targets_.erase(
-+                static_cast<DWORD>(reinterpret_cast<uintptr_t>(ovl)));
-+          }
-           size_t erase_result = child_process_ids.erase(
-               static_cast<DWORD>(reinterpret_cast<uintptr_t>(ovl)));
-           if (erase_result != 1U) {
-             // The process was untracked e.g. a child process of the target.
-             --untracked_target_counter;
-             DCHECK(untracked_target_counter >= 0);
-           }
-           --target_counter;
-@@ -348,27 +356,31 @@ DWORD WINAPI BrokerServicesBase::TargetE
-         tracker->wait_handle = INVALID_HANDLE_VALUE;
+         default: {
+           NOTREACHED();
+           break;
+         }
        }
-       processes.push_back(std::move(tracker));
- 
-     } else if (THREAD_CTRL_PROCESS_SIGNALLED == key) {
-       ProcessTracker* tracker =
-           static_cast<ProcessTracker*>(reinterpret_cast<void*>(ovl));
- 
-+      {
-+        AutoLock lock(&broker->lock_);
-+        broker->active_targets_.erase(tracker->process_id);
-+      }
-+
-       ::UnregisterWait(tracker->wait_handle);
-       tracker->wait_handle = INVALID_HANDLE_VALUE;
- 
-       // PID is unique until the process handle is closed in dtor.
-       processes.erase(std::remove_if(processes.begin(), processes.end(),
-                                      [&](auto&& p) -> bool {
-                                        return p->process_id ==
-                                               tracker->process_id;
-                                      }),
-                       processes.end());
--
-     } else if (THREAD_CTRL_GET_POLICY_INFO == key) {
-       // Clone the policies for sandbox diagnostics.
-       std::unique_ptr<PolicyDiagnosticsReceiver> receiver;
-       receiver.reset(static_cast<PolicyDiagnosticsReceiver*>(
-           reinterpret_cast<void*>(ovl)));
-       // The PollicyInfo ctor copies essential information from the trackers.
-       auto policy_list = std::make_unique<PolicyDiagnosticList>();
-       for (auto&& process_tracker : processes) {
-@@ -637,47 +649,79 @@ ResultCode BrokerServicesBase::SpawnTarg
-     // the tracker. The worker thread takes ownership of these objects.
-     CHECK(::PostQueuedCompletionStatus(
-         job_port_.Get(), 0, THREAD_CTRL_NEW_JOB_TRACKER,
-         reinterpret_cast<LPOVERLAPPED>(tracker)));
-     // There is no obvious recovery after failure here. Previous version with
-     // SpawnCleanup() caused deletion of TargetProcess twice. crbug.com/480639
-     CHECK(
-         AssociateCompletionPort(tracker->job.Get(), job_port_.Get(), tracker));
-+
-+    AutoLock lock(&lock_);
-+    active_targets_.insert(process_info.process_id());
-   } else {
--    // Duplicate the process handle to give the tracking machinery
--    // something valid to wait on in the tracking thread.
--    HANDLE tmp_process_handle = INVALID_HANDLE_VALUE;
--    if (!::DuplicateHandle(::GetCurrentProcess(), process_info.process_handle(),
--                           ::GetCurrentProcess(), &tmp_process_handle,
--                           SYNCHRONIZE, false, 0 /*no options*/)) {
--      *last_error = ::GetLastError();
-+    result = AddTargetPeerInternal(process_info.process_handle(),
-+                                   process_info.process_id(),
-+                                   policy_base, last_error);
-+    if (result != SBOX_ALL_OK) {
-       // This may fail in the same way as Job associated processes.
-       // crbug.com/480639.
-       SpawnCleanup(target);
--      return SBOX_ERROR_CANNOT_DUPLICATE_PROCESS_HANDLE;
-+      return result;
++    } else if (THREAD_CTRL_REMOVE_PEER == key) {
++      // Remove a process from our list of peers.
++      AutoLock lock(&broker->lock_);
++      PeerTrackerMap::iterator it = broker->peer_map_.find(
++          static_cast<DWORD>(reinterpret_cast<uintptr_t>(ovl)));
++      DeregisterPeerTracker(it->second);
++      broker->peer_map_.erase(it);
+     } else if (THREAD_CTRL_QUIT == key) {
+       // The broker object is being destroyed so the thread needs to exit.
+       return 0;
+     } else {
+       // We have not implemented more commands.
+       NOTREACHED();
      }
--    base::win::ScopedHandle dup_process_handle(tmp_process_handle);
--    ProcessTracker* tracker = new ProcessTracker(
--        policy_base, process_info.process_id(), std::move(dup_process_handle));
--    // The tracker and policy will leak if this call fails.
--    ::PostQueuedCompletionStatus(job_port_.Get(), 0,
--                                 THREAD_CTRL_NEW_PROCESS_TRACKER,
--                                 reinterpret_cast<LPOVERLAPPED>(tracker));
+   }
+@@ -460,25 +495,70 @@ ResultCode BrokerServicesBase::SpawnTarg
+     // TODO(wfh): Find a way to make this have the correct lifetime.
+     policy_base->AddRef();
+ 
+     // We have to signal the event once here because the completion port will
+     // never get a message that this target is being terminated thus we should
+     // not block WaitForAllTargets until we have at least one target with job.
+     if (child_process_ids_.empty())
+       ::SetEvent(no_targets_.Get());
++    // We can not track the life time of such processes and it is responsibility
++    // of the host application to make sure that spawned targets without jobs
++    // are terminated when the main application don't need them anymore.
++    // Sandbox policy engine needs to know that these processes are valid
++    // targets for e.g. BrokerDuplicateHandle so track them as peer processes.
++    AddTargetPeer(process_info.process_handle());
    }
  
    *target_info = process_info.Take();
@@ -159,75 +140,74 @@ diff --git a/security/sandbox/chromium/sandbox/win/src/broker_services.cc b/secu
    return SBOX_ALL_OK;
  }
  
-+bool BrokerServicesBase::IsSafeDuplicationTarget(DWORD process_id) {
-+  AutoLock lock(&lock_);
-+  return active_targets_.find(process_id) != active_targets_.end();
+ bool BrokerServicesBase::IsActiveTarget(DWORD process_id) {
+   AutoLock lock(&lock_);
+-  return child_process_ids_.find(process_id) != child_process_ids_.end();
++  return child_process_ids_.find(process_id) != child_process_ids_.end() ||
++         peer_map_.find(process_id) != peer_map_.end();
 +}
 +
-+ResultCode BrokerServicesBase::AddTargetPeerInternal(
-+    HANDLE peer_process_handle,
-+    DWORD peer_process_id,
-+    scoped_refptr<PolicyBase> policy_base,
-+    DWORD* last_error) {
-+  // Duplicate the process handle to give the tracking machinery
-+  // something valid to wait on in the tracking thread.
-+  HANDLE tmp_process_handle = INVALID_HANDLE_VALUE;
-+  if (!::DuplicateHandle(::GetCurrentProcess(), peer_process_handle,
-+                         ::GetCurrentProcess(), &tmp_process_handle,
-+                         SYNCHRONIZE, false, 0 /*no options*/)) {
-+    *last_error = ::GetLastError();
-+    return SBOX_ERROR_CANNOT_DUPLICATE_PROCESS_HANDLE;
-+  }
-+  base::win::ScopedHandle dup_process_handle(tmp_process_handle);
-+  ProcessTracker* tracker = new ProcessTracker(
-+      policy_base, peer_process_id, std::move(dup_process_handle));
-+  // The tracker and policy will leak if this call fails.
-+  ::PostQueuedCompletionStatus(job_port_.Get(), 0,
-+                               THREAD_CTRL_NEW_PROCESS_TRACKER,
-+                               reinterpret_cast<LPOVERLAPPED>(tracker));
-+
-+  AutoLock lock(&lock_);
-+  active_targets_.insert(peer_process_id);
-+
-+  return SBOX_ALL_OK;
++VOID CALLBACK BrokerServicesBase::RemovePeer(PVOID parameter, BOOLEAN timeout) {
++  PeerTracker* peer = reinterpret_cast<PeerTracker*>(parameter);
++  // Don't check the return code because we this may fail (safely) at shutdown.
++  ::PostQueuedCompletionStatus(
++      peer->job_port, 0, THREAD_CTRL_REMOVE_PEER,
++      reinterpret_cast<LPOVERLAPPED>(static_cast<uintptr_t>(peer->id)));
 +}
 +
 +ResultCode BrokerServicesBase::AddTargetPeer(HANDLE peer_process) {
-+  DWORD last_error;
-+  return AddTargetPeerInternal(peer_process, ::GetProcessId(peer_process),
-+                               nullptr, &last_error);
-+}
++  std::unique_ptr<PeerTracker> peer(
++      new PeerTracker(::GetProcessId(peer_process), job_port_.Get()));
++  if (!peer->id)
++    return SBOX_ERROR_GENERIC;
 +
- ResultCode BrokerServicesBase::GetPolicyDiagnostics(
-     std::unique_ptr<PolicyDiagnosticsReceiver> receiver) {
-   CHECK(job_thread_.IsValid());
-   // Post to the job thread.
-   if (!::PostQueuedCompletionStatus(
-           job_port_.Get(), 0, THREAD_CTRL_GET_POLICY_INFO,
-           reinterpret_cast<LPOVERLAPPED>(receiver.get()))) {
-     receiver->OnError(SBOX_ERROR_GENERIC);
++  HANDLE process_handle;
++  if (!::DuplicateHandle(::GetCurrentProcess(), peer_process,
++                         ::GetCurrentProcess(), &process_handle,
++                         SYNCHRONIZE, FALSE, 0)) {
++    return SBOX_ERROR_GENERIC;
++  }
++  peer->process.Set(process_handle);
++
++  AutoLock lock(&lock_);
++  if (!peer_map_.insert(std::make_pair(peer->id, peer.get())).second)
++    return SBOX_ERROR_BAD_PARAMS;
++
++  if (!::RegisterWaitForSingleObject(
++          &peer->wait_object, peer->process.Get(), RemovePeer, peer.get(),
++          INFINITE, WT_EXECUTEONLYONCE | WT_EXECUTEINWAITTHREAD)) {
++    peer_map_.erase(peer->id);
++    return SBOX_ERROR_GENERIC;
++  }
++
++  // Release the pointer since it will be cleaned up by the callback.
++  ignore_result(peer.release());
++  return SBOX_ALL_OK;
+ }
+ 
+ }  // namespace sandbox
 diff --git a/security/sandbox/chromium/sandbox/win/src/broker_services.h b/security/sandbox/chromium/sandbox/win/src/broker_services.h
 --- a/security/sandbox/chromium/sandbox/win/src/broker_services.h
 +++ b/security/sandbox/chromium/sandbox/win/src/broker_services.h
-@@ -13,16 +13,17 @@
- 
- #include "base/compiler_specific.h"
- #include "base/macros.h"
- #include "base/memory/scoped_refptr.h"
- #include "base/win/scoped_handle.h"
- #include "sandbox/win/src/crosscall_server.h"
- #include "sandbox/win/src/job.h"
+@@ -19,16 +19,17 @@
  #include "sandbox/win/src/sandbox.h"
-+#include "sandbox/win/src/sandbox_policy_base.h"
  #include "sandbox/win/src/sharedmem_ipc_server.h"
  #include "sandbox/win/src/win2k_threadpool.h"
  #include "sandbox/win/src/win_utils.h"
  
+ namespace {
+ 
+ struct JobTracker;
++struct PeerTracker;
+ 
+ }  // namespace
+ 
  namespace sandbox {
  
  // BrokerServicesBase ---------------------------------------------------------
  // Broker implementation version 0
-@@ -43,16 +44,24 @@ class BrokerServicesBase final : public 
+ //
+@@ -48,28 +49,35 @@ class BrokerServicesBase final : public 
    scoped_refptr<TargetPolicy> CreatePolicy() override;
    ResultCode SpawnTarget(const wchar_t* exe_path,
                           const wchar_t* command_line,
@@ -237,53 +217,58 @@ diff --git a/security/sandbox/chromium/sandbox/win/src/broker_services.h b/secur
                           PROCESS_INFORMATION* target) override;
    ResultCode WaitForAllTargets() override;
 +  ResultCode AddTargetPeer(HANDLE peer_process) override;
-+
-+  // Checks if the supplied process ID matches one of the broker's active
-+  // target processes.  We use this method for the specific purpose of
-+  // checking if we can safely duplicate a handle to the supplied process
-+  // in DuplicateHandleProxyAction.
-+  bool IsSafeDuplicationTarget(DWORD process_id);
-+
-   ResultCode GetPolicyDiagnostics(
-       std::unique_ptr<PolicyDiagnosticsReceiver> receiver) override;
+ 
+   // Checks if the supplied process ID matches one of the broker's active
+   // target processes
+   // Returns:
+   //   true if there is an active target process for this ID, otherwise false.
+   bool IsActiveTarget(DWORD process_id);
  
   private:
++  typedef std::list<JobTracker*> JobTrackerList;
++  typedef std::map<DWORD, PeerTracker*> PeerTrackerMap;
++
    // The routine that the worker thread executes. It is in charge of
    // notifications and cleanup-related tasks.
    static DWORD WINAPI TargetEventsThread(PVOID param);
  
-@@ -65,14 +74,27 @@ class BrokerServicesBase final : public 
++  // Removes a target peer from the process list if it expires.
++  static VOID CALLBACK RemovePeer(PVOID parameter, BOOLEAN timeout);
++
+   // The completion port used by the job objects to communicate events to
+   // the worker thread.
+   base::win::ScopedHandle job_port_;
+ 
+   // Handle to a manual-reset event that is signaled when the total target
+   // process count reaches zero.
    base::win::ScopedHandle no_targets_;
  
-   // Handle to the worker thread that reacts to job notifications.
-   base::win::ScopedHandle job_thread_;
+@@ -81,16 +89,20 @@ class BrokerServicesBase final : public 
+   CRITICAL_SECTION lock_;
  
    // Provides a pool of threads that are used to wait on the IPC calls.
    std::unique_ptr<ThreadProvider> thread_pool_;
  
-+  // The set representing the broker's active target processes including
-+  // both sandboxed and unsandboxed peer processes.
-+  std::set<DWORD> active_targets_;
-+
-+  // Lock used to protect active_targets_ from being simultaneously accessed
-+  // by multiple threads.
-+  CRITICAL_SECTION lock_;
-+
-+  ResultCode AddTargetPeerInternal(HANDLE peer_process_handle,
-+                                   DWORD peer_process_id,
-+                                   scoped_refptr<PolicyBase> policy_base,
-+                                   DWORD* last_error);
+   // List of the trackers for closing and cleanup purposes.
+   std::list<std::unique_ptr<JobTracker>> tracker_list_;
+ 
++  // Maps peer process IDs to the saved handle and wait event.
++  // Prevents peer callbacks from accessing the broker after destruction.
++  PeerTrackerMap peer_map_;
 +
+   // Provides a fast lookup to identify sandboxed processes that belong to a
+   // job. Consult |jobless_process_handles_| for handles of processes without
+   // jobs.
+   std::set<DWORD> child_process_ids_;
+ 
    DISALLOW_COPY_AND_ASSIGN(BrokerServicesBase);
  };
  
- }  // namespace sandbox
- 
- #endif  // SANDBOX_WIN_SRC_BROKER_SERVICES_H_
 diff --git a/security/sandbox/chromium/sandbox/win/src/sandbox.h b/security/sandbox/chromium/sandbox/win/src/sandbox.h
 --- a/security/sandbox/chromium/sandbox/win/src/sandbox.h
 +++ b/security/sandbox/chromium/sandbox/win/src/sandbox.h
-@@ -96,16 +96,24 @@ class BrokerServices {
+@@ -86,16 +86,24 @@ class BrokerServices {
+                                  PROCESS_INFORMATION* target) = 0;
  
    // This call blocks (waits) for all the targets to terminate.
    // Returns:
@@ -291,7 +276,7 @@ diff --git a/security/sandbox/chromium/sandbox/win/src/sandbox.h b/security/sand
    //   If the return is ERROR_GENERIC, you can call ::GetLastError() to get
    //   more information.
    virtual ResultCode WaitForAllTargets() = 0;
- 
++
 +  // Adds an unsandboxed process as a peer for policy decisions (e.g.
 +  // HANDLES_DUP_ANY policy).
 +  // Returns:
@@ -299,12 +284,11 @@ diff --git a/security/sandbox/chromium/sandbox/win/src/sandbox.h b/security/sand
 +  //   If the return is ERROR_GENERIC, you can call ::GetLastError() to get
 +  //   more information.
 +  virtual ResultCode AddTargetPeer(HANDLE peer_process) = 0;
-+
-   // This call creates a snapshot of policies managed by the sandbox and
-   // returns them via a helper class.
-   // Parameters:
-   //   receiver: The |PolicyDiagnosticsReceiver| implementation will be
-   //   called to accept the results of the call.
-   // Returns:
-   //   ALL_OK if the request was dispatched. All other return values
-   //   imply failure, and the responder will not receive its completion
+ 
+  protected:
+   ~BrokerServices() {}
+ };
+ 
+ // TargetServices models the current process from the perspective
+ // of a target process. To obtain a pointer to it use
+ // Sandbox::GetTargetServices(). Note that this call returns a non-null

security/sandbox/chromium-shim/patches/with_update/revert_remove_BrokerDuplicateHandle.patch

@@ -1,22 +1,18 @@
 # HG changeset patch
-# User Toshihito Kikuchi <tkikuchi@mozilla.com>
-# Date 1589671733 25200
-#      Sat May 16 16:28:53 2020 -0700
-# Node ID 91bb5c3807cfe657cc24c9a3c217dd1f57db6d5c
-# Parent  22eb0bf7180801edf775be44cf299a50e01eb7bf
-Reinstate sandbox::TargetServices::BrokerDuplicateHandle. r=bobowen
+# User Bob Owen <bobowencode@gmail.com>
+# Date 1485985575 0
+#      Wed Feb 01 21:46:15 2017 +0000
+# Node ID 9328428e5f863472f3702057b01d472b46b7b6a2
+# Parent  4c1880ac25a66dec6455dc88ba693096d65df704
+Reinstate sandbox::TargetServices::BrokerDuplicateHandle. r=aklotz
 
-This patch reverts the commit removing sandbox::TargetServices::BrokerDuplicateHandle
-and applies the new IpcTag type.
-
-https://chromium.googlesource.com/chromium/src.git/+/569193665184525ca366e65d0735f5c851106e43
-https://chromium.googlesource.com/chromium/src.git/+/c8cff7f9663ce6d1ef35e5c717f43c867c3906eb
+This basically reverts chromium commit 569193665184525ca366e65d0735f5c851106e43.
 
 diff --git a/security/sandbox/chromium/sandbox/win/src/handle_dispatcher.cc b/security/sandbox/chromium/sandbox/win/src/handle_dispatcher.cc
 new file mode 100644
 --- /dev/null
 +++ b/security/sandbox/chromium/sandbox/win/src/handle_dispatcher.cc
-@@ -0,0 +1,93 @@
+@@ -0,0 +1,92 @@
 +// Copyright (c) 2012 The Chromium Authors. All rights reserved.
 +// Use of this source code is governed by a BSD-style license that can be
 +// found in the LICENSE file.
@@ -41,7 +37,7 @@ new file mode 100644
 +HandleDispatcher::HandleDispatcher(PolicyBase* policy_base)
 +    : policy_base_(policy_base) {
 +  static const IPCCall duplicate_handle_proxy = {
-+      {IpcTag::DUPLICATEHANDLEPROXY,
++      {IPC_DUPLICATEHANDLEPROXY_TAG,
 +       {VOIDPTR_TYPE, UINT32_TYPE, UINT32_TYPE, UINT32_TYPE}},
 +      reinterpret_cast<CallbackGeneric>(
 +          &HandleDispatcher::DuplicateHandleProxy)};
@@ -50,15 +46,14 @@ new file mode 100644
 +}
 +
 +bool HandleDispatcher::SetupService(InterceptionManager* manager,
-+                                    IpcTag service) {
++                                    int service) {
 +  // We perform no interceptions for handles right now.
 +  switch (service) {
-+    case IpcTag::DUPLICATEHANDLEPROXY:
-+      return true;
-+
-+    default:
-+      return false;
++    case IPC_DUPLICATEHANDLEPROXY_TAG:
++    return true;
 +  }
++
++  return false;
 +}
 +
 +bool HandleDispatcher::DuplicateHandleProxy(IPCInfo* ipc,
@@ -98,7 +93,7 @@ new file mode 100644
 +  params[HandleTarget::NAME] = ParamPickerMake(type_info->Name.Buffer);
 +  params[HandleTarget::TARGET] = ParamPickerMake(target_process_id);
 +
-+  EvalResult eval = policy_base_->EvalPolicy(IpcTag::DUPLICATEHANDLEPROXY,
++  EvalResult eval = policy_base_->EvalPolicy(IPC_DUPLICATEHANDLEPROXY_TAG,
 +                                             params.GetBase());
 +  ipc->return_info.win32_result =
 +      HandlePolicy::DuplicateHandleProxyAction(eval, handle.Get(),
@@ -137,7 +132,7 @@ new file mode 100644
 +  ~HandleDispatcher() override {}
 +
 +  // Dispatcher interface.
-+  bool SetupService(InterceptionManager* manager, IpcTag service) override;
++  bool SetupService(InterceptionManager* manager, int service) override;
 +
 + private:
 +  // Processes IPC requests coming from calls to
@@ -189,7 +184,7 @@ new file mode 100644
 +
 +  SharedMemIPCClient ipc(memory);
 +  CrossCallReturn answer = {0};
-+  ResultCode code = CrossCall(ipc, IpcTag::DUPLICATEHANDLEPROXY,
++  ResultCode code = CrossCall(ipc, IPC_DUPLICATEHANDLEPROXY_TAG,
 +                              source_handle, target_process_id,
 +                              desired_access, options, &answer);
 +  if (SBOX_ALL_OK != code)
@@ -239,7 +234,7 @@ diff --git a/security/sandbox/chromium/sandbox/win/src/handle_policy.cc b/securi
 new file mode 100644
 --- /dev/null
 +++ b/security/sandbox/chromium/sandbox/win/src/handle_policy.cc
-@@ -0,0 +1,93 @@
+@@ -0,0 +1,92 @@
 +// Copyright (c) 2012 The Chromium Authors. All rights reserved.
 +// Use of this source code is governed by a BSD-style license that can be
 +// found in the LICENSE file.
@@ -287,7 +282,7 @@ new file mode 100644
 +                                     CASE_INSENSITIVE)) {
 +    return false;
 +  }
-+  if (!policy->AddRule(IpcTag::DUPLICATEHANDLEPROXY, &duplicate_rule)) {
++  if (!policy->AddRule(IPC_DUPLICATEHANDLEPROXY_TAG, &duplicate_rule)) {
 +    return false;
 +  }
 +  return true;
@@ -307,8 +302,7 @@ new file mode 100644
 +  base::win::ScopedHandle remote_target_process;
 +  if (target_process_id != ::GetCurrentProcessId()) {
 +    // Sandboxed children are dynamic, so we check that manually.
-+    if (!BrokerServicesBase::GetInstance()->IsSafeDuplicationTarget(
-+            target_process_id)) {
++    if (!BrokerServicesBase::GetInstance()->IsActiveTarget(target_process_id)) {
 +      return ERROR_ACCESS_DENIED;
 +    }
 +
@@ -499,28 +493,29 @@ new file mode 100644
 diff --git a/security/sandbox/chromium/sandbox/win/src/ipc_tags.h b/security/sandbox/chromium/sandbox/win/src/ipc_tags.h
 --- a/security/sandbox/chromium/sandbox/win/src/ipc_tags.h
 +++ b/security/sandbox/chromium/sandbox/win/src/ipc_tags.h
-@@ -23,16 +23,17 @@ enum class IpcTag {
-   NTOPENPROCESS,
-   NTOPENPROCESSTOKEN,
-   NTOPENPROCESSTOKENEX,
-   CREATEPROCESSW,
-   CREATEEVENT,
-   OPENEVENT,
-   NTCREATEKEY,
-   NTOPENKEY,
-+  DUPLICATEHANDLEPROXY,
-   GDI_GDIDLLINITIALIZE,
-   GDI_GETSTOCKOBJECT,
-   USER_REGISTERCLASSW,
-   CREATETHREAD,
-   USER_ENUMDISPLAYMONITORS,
-   USER_ENUMDISPLAYDEVICES,
-   USER_GETMONITORINFO,
-   GDI_CREATEOPMPROTECTEDOUTPUTS,
+@@ -23,16 +23,17 @@ enum {
+   IPC_NTOPENPROCESS_TAG,
+   IPC_NTOPENPROCESSTOKEN_TAG,
+   IPC_NTOPENPROCESSTOKENEX_TAG,
+   IPC_CREATEPROCESSW_TAG,
+   IPC_CREATEEVENT_TAG,
+   IPC_OPENEVENT_TAG,
+   IPC_NTCREATEKEY_TAG,
+   IPC_NTOPENKEY_TAG,
++  IPC_DUPLICATEHANDLEPROXY_TAG,
+   IPC_GDI_GDIDLLINITIALIZE_TAG,
+   IPC_GDI_GETSTOCKOBJECT_TAG,
+   IPC_USER_REGISTERCLASSW_TAG,
+   IPC_CREATETHREAD_TAG,
+   IPC_USER_ENUMDISPLAYMONITORS_TAG,
+   IPC_USER_ENUMDISPLAYDEVICES_TAG,
+   IPC_USER_GETMONITORINFO_TAG,
+   IPC_GDI_CREATEOPMPROTECTEDOUTPUTS_TAG,
 diff --git a/security/sandbox/chromium/sandbox/win/src/sandbox.h b/security/sandbox/chromium/sandbox/win/src/sandbox.h
 --- a/security/sandbox/chromium/sandbox/win/src/sandbox.h
 +++ b/security/sandbox/chromium/sandbox/win/src/sandbox.h
-@@ -161,16 +161,30 @@ class TargetServices {
+@@ -136,16 +136,30 @@ class TargetServices {
+   // processing any untrusted data or running third-party code. If this call
    // fails the current process could be terminated immediately.
    virtual void LowerToken() = 0;
  
@@ -528,7 +523,7 @@ diff --git a/security/sandbox/chromium/sandbox/win/src/sandbox.h b/security/sand
    // information about the current state of the process, such as whether
    // LowerToken has been called or not.
    virtual ProcessState* GetState() = 0;
- 
++
 +  // Requests the broker to duplicate the supplied handle into the target
 +  // process. The target process must be an active sandbox child process
 +  // and the source process must have a corresponding policy allowing
@@ -542,30 +537,28 @@ diff --git a/security/sandbox/chromium/sandbox/win/src/sandbox.h b/security/sand
 +                                     HANDLE* target_handle,
 +                                     DWORD desired_access,
 +                                     DWORD options) = 0;
-+
+ 
   protected:
    ~TargetServices() {}
  };
  
- class PolicyInfo {
-  public:
-   // Returns a JSON representation of the policy snapshot.
-   // This pointer has the same lifetime as this PolicyInfo object.
+ }  // namespace sandbox
+ 
+ 
 diff --git a/security/sandbox/chromium/sandbox/win/src/sandbox_policy.h b/security/sandbox/chromium/sandbox/win/src/sandbox_policy.h
 --- a/security/sandbox/chromium/sandbox/win/src/sandbox_policy.h
 +++ b/security/sandbox/chromium/sandbox/win/src/sandbox_policy.h
-@@ -25,28 +25,32 @@ class TargetPolicy {
+@@ -24,27 +24,31 @@ class TargetPolicy {
    // exactly like the CreateProcess API does. See the comment at the top of
    // process_thread_dispatcher.cc for more details.
    enum SubSystem {
-     SUBSYS_FILES,            // Creation and opening of files and pipes.
-     SUBSYS_NAMED_PIPES,      // Creation of named pipes.
-     SUBSYS_PROCESS,          // Creation of child processes.
-     SUBSYS_REGISTRY,         // Creation and opening of registry keys.
-     SUBSYS_SYNC,             // Creation of named sync objects.
-+    SUBSYS_HANDLES,          // Duplication of handles to other processes.
-     SUBSYS_WIN32K_LOCKDOWN,  // Win32K Lockdown related policy.
-     SUBSYS_SIGNED_BINARY     // Signed binary policy.
+     SUBSYS_FILES,           // Creation and opening of files and pipes.
+     SUBSYS_NAMED_PIPES,     // Creation of named pipes.
+     SUBSYS_PROCESS,         // Creation of child processes.
+     SUBSYS_REGISTRY,        // Creation and opening of registry keys.
+     SUBSYS_SYNC,            // Creation of named sync objects.
++    SUBSYS_HANDLES,         // Duplication of handles to other processes.
+     SUBSYS_WIN32K_LOCKDOWN  // Win32K Lockdown related policy.
    };
  
    // Allowable semantics when a rule is matched.
@@ -590,14 +583,14 @@ diff --git a/security/sandbox/chromium/sandbox/win/src/sandbox_policy.h b/securi
 diff --git a/security/sandbox/chromium/sandbox/win/src/sandbox_policy_base.cc b/security/sandbox/chromium/sandbox/win/src/sandbox_policy_base.cc
 --- a/security/sandbox/chromium/sandbox/win/src/sandbox_policy_base.cc
 +++ b/security/sandbox/chromium/sandbox/win/src/sandbox_policy_base.cc
-@@ -12,16 +12,17 @@
+@@ -10,16 +10,17 @@
+ 
+ #include "base/callback.h"
  #include "base/logging.h"
  #include "base/macros.h"
  #include "base/stl_util.h"
  #include "base/strings/stringprintf.h"
- #include "base/win/win_util.h"
  #include "base/win/windows_version.h"
- #include "sandbox/win/src/acl.h"
  #include "sandbox/win/src/filesystem_policy.h"
 +#include "sandbox/win/src/handle_policy.h"
  #include "sandbox/win/src/interception.h"
@@ -608,7 +601,7 @@ diff --git a/security/sandbox/chromium/sandbox/win/src/sandbox_policy_base.cc b/
  #include "sandbox/win/src/policy_low_level.h"
  #include "sandbox/win/src/process_mitigations.h"
  #include "sandbox/win/src/process_mitigations_win32k_policy.h"
-@@ -754,16 +755,24 @@ ResultCode PolicyBase::AddRuleInternal(S
+@@ -733,16 +734,24 @@ ResultCode PolicyBase::AddRuleInternal(S
      }
      case SUBSYS_REGISTRY: {
        if (!RegistryPolicy::GenerateRules(pattern, semantics, policy_maker_)) {
@@ -626,13 +619,13 @@ diff --git a/security/sandbox/chromium/sandbox/win/src/sandbox_policy_base.cc b/
 +    }
 +
      case SUBSYS_WIN32K_LOCKDOWN: {
-       // Win32k intercept rules only supported on Windows 8 and above. This must
-       // match the version checks in process_mitigations.cc for consistency.
-       if (base::win::GetVersion() >= base::win::Version::WIN8) {
-         DCHECK_EQ(MITIGATION_WIN32K_DISABLE,
-                   mitigations_ & MITIGATION_WIN32K_DISABLE)
-             << "Enable MITIGATION_WIN32K_DISABLE before adding win32k policy "
-                "rules.";
+       if (!ProcessMitigationsWin32KLockdownPolicy::GenerateRules(
+               pattern, semantics, policy_maker_)) {
+         NOTREACHED();
+         return SBOX_ERROR_BAD_PARAMS;
+       }
+       break;
+     }
 diff --git a/security/sandbox/chromium/sandbox/win/src/target_services.cc b/security/sandbox/chromium/sandbox/win/src/target_services.cc
 --- a/security/sandbox/chromium/sandbox/win/src/target_services.cc
 +++ b/security/sandbox/chromium/sandbox/win/src/target_services.cc
@@ -654,9 +647,9 @@ diff --git a/security/sandbox/chromium/sandbox/win/src/target_services.cc b/secu
  #include "sandbox/win/src/sandbox_nt_util.h"
  #include "sandbox/win/src/sandbox_types.h"
  #include "sandbox/win/src/sharedmem_ipc_client.h"
-@@ -239,9 +240,19 @@ void ProcessState::SetRevertedToSelf() {
-   if (process_state_ < ProcessStateInternal::REVERTED_TO_SELF)
-     process_state_ = ProcessStateInternal::REVERTED_TO_SELF;
+@@ -259,9 +260,19 @@ void ProcessState::SetRevertedToSelf() {
+   if (process_state_ < 3)
+     process_state_ = 3;
  }
  
  void ProcessState::SetCsrssConnected(bool csrss_connected) {
@@ -677,7 +670,7 @@ diff --git a/security/sandbox/chromium/sandbox/win/src/target_services.cc b/secu
 diff --git a/security/sandbox/chromium/sandbox/win/src/target_services.h b/security/sandbox/chromium/sandbox/win/src/target_services.h
 --- a/security/sandbox/chromium/sandbox/win/src/target_services.h
 +++ b/security/sandbox/chromium/sandbox/win/src/target_services.h
-@@ -40,16 +40,21 @@ class ProcessState {
+@@ -41,16 +41,21 @@ class ProcessState {
  class TargetServicesBase : public TargetServices {
   public:
    TargetServicesBase();
@@ -720,24 +713,24 @@ diff --git a/security/sandbox/chromium/sandbox/win/src/top_level_dispatcher.cc b
  #include "sandbox/win/src/process_thread_dispatcher.h"
  #include "sandbox/win/src/registry_dispatcher.h"
  #include "sandbox/win/src/sandbox_policy_base.h"
-@@ -55,16 +56,20 @@ TopLevelDispatcher::TopLevelDispatcher(P
-   ipc_targets_[static_cast<size_t>(IpcTag::OPENEVENT)] = dispatcher;
+@@ -53,16 +54,20 @@ TopLevelDispatcher::TopLevelDispatcher(P
+   ipc_targets_[IPC_OPENEVENT_TAG] = dispatcher;
    sync_dispatcher_.reset(dispatcher);
  
    dispatcher = new RegistryDispatcher(policy_);
-   ipc_targets_[static_cast<size_t>(IpcTag::NTCREATEKEY)] = dispatcher;
-   ipc_targets_[static_cast<size_t>(IpcTag::NTOPENKEY)] = dispatcher;
+   ipc_targets_[IPC_NTCREATEKEY_TAG] = dispatcher;
+   ipc_targets_[IPC_NTOPENKEY_TAG] = dispatcher;
    registry_dispatcher_.reset(dispatcher);
  
 +  dispatcher = new HandleDispatcher(policy_);
-+  ipc_targets_[static_cast<size_t>(IpcTag::DUPLICATEHANDLEPROXY)] = dispatcher;
++  ipc_targets_[IPC_DUPLICATEHANDLEPROXY_TAG] = dispatcher;
 +  handle_dispatcher_.reset(dispatcher);
 +
    dispatcher = new ProcessMitigationsWin32KDispatcher(policy_);
-   ipc_targets_[static_cast<size_t>(IpcTag::GDI_GDIDLLINITIALIZE)] = dispatcher;
-   ipc_targets_[static_cast<size_t>(IpcTag::GDI_GETSTOCKOBJECT)] = dispatcher;
-   ipc_targets_[static_cast<size_t>(IpcTag::USER_REGISTERCLASSW)] = dispatcher;
-   ipc_targets_[static_cast<size_t>(IpcTag::USER_ENUMDISPLAYMONITORS)] =
-       dispatcher;
-   ipc_targets_[static_cast<size_t>(IpcTag::USER_ENUMDISPLAYDEVICES)] =
-       dispatcher;
+   ipc_targets_[IPC_GDI_GDIDLLINITIALIZE_TAG] = dispatcher;
+   ipc_targets_[IPC_GDI_GETSTOCKOBJECT_TAG] = dispatcher;
+   ipc_targets_[IPC_USER_REGISTERCLASSW_TAG] = dispatcher;
+   ipc_targets_[IPC_USER_ENUMDISPLAYMONITORS_TAG] = dispatcher;
+   ipc_targets_[IPC_USER_ENUMDISPLAYDEVICES_TAG] = dispatcher;
+   ipc_targets_[IPC_USER_GETMONITORINFO_TAG] = dispatcher;
+   ipc_targets_[IPC_GDI_CREATEOPMPROTECTEDOUTPUTS_TAG] = dispatcher;

security/sandbox/chromium-shim/patches/with_update/update_chromium_linux_x86_syscalls.patch

@@ -0,0 +1,93 @@
+# HG changeset patch
+# User Gian-Carlo Pascutto <gcp@mozilla.com>
+# Date 1465410964 -7200
+#      Wed Jun 08 20:36:04 2016 +0200
+# Node ID 37ac7119fe8df776c850624a9a95dd182ff469b0
+# Parent  5d0dab9cddb8410f891f22a1bead1c1975adb5bd
+Update chromium's list of linux-x86-32 syscalls. r=jld
+
+Originally landed as changset:
+https://hg.mozilla.org/mozilla-central/rev/adb1d2a92e0d
+
+diff --git a/security/sandbox/chromium/sandbox/linux/system_headers/x86_32_linux_syscalls.h b/security/sandbox/chromium/sandbox/linux/system_headers/x86_32_linux_syscalls.h
+--- a/security/sandbox/chromium/sandbox/linux/system_headers/x86_32_linux_syscalls.h
++++ b/security/sandbox/chromium/sandbox/linux/system_headers/x86_32_linux_syscalls.h
+@@ -1417,10 +1417,78 @@
+ #if !defined(__NR_getrandom)
+ #define __NR_getrandom 355
+ #endif
+ 
+ #if !defined(__NR_memfd_create)
+ #define __NR_memfd_create 356
+ #endif
+ 
++#if !defined(__NR_bpf)
++#define __NR_bpf 357
++#endif
++
++#if !defined(__NR_execveat)
++#define __NR_execveat 358
++#endif
++
++#if !defined(__NR_socket)
++#define __NR_socket 359
++#endif
++
++#if !defined(__NR_socketpair)
++#define __NR_socketpair 360
++#endif
++
++#if !defined(__NR_bind)
++#define __NR_bind 361
++#endif
++
++#if !defined(__NR_connect)
++#define __NR_connect 362
++#endif
++
++#if !defined(__NR_listen)
++#define __NR_listen 363
++#endif
++
++#if !defined(__NR_accept4)
++#define __NR_accept4 364
++#endif
++
++#if !defined(__NR_getsockopt)
++#define __NR_getsockopt 365
++#endif
++
++#if !defined(__NR_setsockopt)
++#define __NR_setsockopt 366
++#endif
++
++#if !defined(__NR_getsockname)
++#define __NR_getsockname 367
++#endif
++
++#if !defined(__NR_getpeername)
++#define __NR_getpeername 368
++#endif
++
++#if !defined(__NR_sendto)
++#define __NR_sendto 369
++#endif
++
++#if !defined(__NR_sendmsg)
++#define __NR_sendmsg 370
++#endif
++
++#if !defined(__NR_recvfrom)
++#define __NR_recvfrom 371
++#endif
++
++#if !defined(__NR_recvmsg)
++#define __NR_recvmsg 372
++#endif
++
++#if !defined(__NR_shutdown)
++#define __NR_shutdown 373
++#endif
++
+ #endif  // SANDBOX_LINUX_SYSTEM_HEADERS_X86_32_LINUX_SYSCALLS_H_
+ 

security/sandbox/chromium-shim/sandbox/win/src/sandbox_policy_diagnostic.h

@@ -1,31 +0,0 @@
-/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
-/* vim: set ts=2 et sw=2 tw=80: */
-/* This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
-
-// This is a partial implementation of Chromium's source file
-// //sandbox/win/src/sandbox_policy_diagnostic.h
-
-#ifndef SANDBOX_WIN_SRC_SANDBOX_POLICY_DIAGNOSTIC_H_
-#define SANDBOX_WIN_SRC_SANDBOX_POLICY_DIAGNOSTIC_H_
-
-#include "mozilla/Assertions.h"
-
-namespace sandbox {
-
-class PolicyBase;
-
-class PolicyDiagnostic final : public PolicyInfo {
- public:
-  PolicyDiagnostic(PolicyBase*) {}
-  ~PolicyDiagnostic() override = default;
-  const char* JsonString() override { MOZ_CRASH(); }
-
- private:
-  DISALLOW_COPY_AND_ASSIGN(PolicyDiagnostic);
-};
-
-}  // namespace sandbox
-
-#endif  // SANDBOX_WIN_SRC_SANDBOX_POLICY_DIAGNOSTIC_H_

security/sandbox/chromium/base/at_exit.cc

@@ -48,11 +48,11 @@ AtExitManager::~AtExitManager() {
 // static
 void AtExitManager::RegisterCallback(AtExitCallbackType func, void* param) {
   DCHECK(func);
-  RegisterTask(base::BindOnce(func, param));
+  RegisterTask(base::Bind(func, param));
 }
 
 // static
-void AtExitManager::RegisterTask(base::OnceClosure task) {
+void AtExitManager::RegisterTask(base::Closure task) {
   if (!g_top_manager) {
     NOTREACHED() << "Tried to RegisterCallback without an AtExitManager";
     return;
@@ -75,7 +75,7 @@ void AtExitManager::ProcessCallbacksNow() {
   // Callbacks may try to add new callbacks, so run them without holding
   // |lock_|. This is an error and caught by the DCHECK in RegisterTask(), but
   // handle it gracefully in release builds so we don't deadlock.
-  base::stack<base::OnceClosure> tasks;
+  base::stack<base::Closure> tasks;
   {
     AutoLock lock(g_top_manager->lock_);
     tasks.swap(g_top_manager->stack_);
@@ -89,7 +89,8 @@ void AtExitManager::ProcessCallbacksNow() {
   ScopedAllowCrossThreadRefCountAccess allow_cross_thread_ref_count_access;
 
   while (!tasks.empty()) {
-    std::move(tasks.top()).Run();
+    base::Closure task = tasks.top();
+    task.Run();
     tasks.pop();
   }
 

security/sandbox/chromium/base/at_exit.h

@@ -43,7 +43,7 @@ class BASE_EXPORT AtExitManager {
   static void RegisterCallback(AtExitCallbackType func, void* param);
 
   // Registers the specified task to be called at exit.
-  static void RegisterTask(base::OnceClosure task);
+  static void RegisterTask(base::Closure task);
 
   // Calls the functions registered with RegisterCallback in LIFO order. It
   // is possible to register new callbacks after calling this function.
@@ -63,7 +63,7 @@ class BASE_EXPORT AtExitManager {
  private:
   base::Lock lock_;
 
-  base::stack<base::OnceClosure> stack_ GUARDED_BY(lock_);
+  base::stack<base::Closure> stack_ GUARDED_BY(lock_);
 
 #if DCHECK_IS_ON()
   bool processing_callbacks_ GUARDED_BY(lock_) = false;

security/sandbox/chromium/base/atomicops.h

@@ -39,6 +39,15 @@
 #include "base/base_export.h"
 #include "build/build_config.h"
 
+#if defined(OS_WIN) && (defined(ARCH_CPU_64_BITS) || defined(__MINGW32__))
+// windows.h #defines this (only on x64). This causes problems because the
+// public API also uses MemoryBarrier at the public name for this fence. So, on
+// X64, undef it, and call its documented
+// (http://msdn.microsoft.com/en-us/library/windows/desktop/ms684208.aspx)
+// implementation directly.
+#undef MemoryBarrier
+#endif
+
 namespace base {
 namespace subtle {
 
@@ -91,7 +100,8 @@ Atomic32 Barrier_AtomicIncrement(volatile Atomic32* ptr,
 // ensure that no later memory access can be reordered ahead of the operation.
 // "Release" operations ensure that no previous memory access can be reordered
 // after the operation.  "Barrier" operations have both "Acquire" and "Release"
-// semantics.
+// semantics.   A MemoryBarrier() has "Barrier" semantics, but does no memory
+// access.
 Atomic32 Acquire_CompareAndSwap(volatile Atomic32* ptr,
                                 Atomic32 old_value,
                                 Atomic32 new_value);
@@ -99,6 +109,7 @@ Atomic32 Release_CompareAndSwap(volatile Atomic32* ptr,
                                 Atomic32 old_value,
                                 Atomic32 new_value);
 
+void MemoryBarrier();
 void NoBarrier_Store(volatile Atomic32* ptr, Atomic32 value);
 void Acquire_Store(volatile Atomic32* ptr, Atomic32 value);
 void Release_Store(volatile Atomic32* ptr, Atomic32 value);

security/sandbox/chromium/base/atomicops_internals_portable.h

@@ -52,6 +52,16 @@ typedef volatile std::atomic<Atomic32>* AtomicLocation32;
 static_assert(sizeof(*(AtomicLocation32) nullptr) == sizeof(Atomic32),
               "incompatible 32-bit atomic layout");
 
+inline void MemoryBarrier() {
+#if defined(__GLIBCXX__)
+  // Work around libstdc++ bug 51038 where atomic_thread_fence was declared but
+  // not defined, leading to the linker complaining about undefined references.
+  __atomic_thread_fence(std::memory_order_seq_cst);
+#else
+  std::atomic_thread_fence(std::memory_order_seq_cst);
+#endif
+}
+
 inline Atomic32 NoBarrier_CompareAndSwap(volatile Atomic32* ptr,
                                          Atomic32 old_value,
                                          Atomic32 new_value) {
@@ -109,7 +119,7 @@ inline void NoBarrier_Store(volatile Atomic32* ptr, Atomic32 value) {
 
 inline void Acquire_Store(volatile Atomic32* ptr, Atomic32 value) {
   ((AtomicLocation32)ptr)->store(value, std::memory_order_relaxed);
-  std::atomic_thread_fence(std::memory_order_seq_cst);
+  MemoryBarrier();
 }
 
 inline void Release_Store(volatile Atomic32* ptr, Atomic32 value) {
@@ -125,7 +135,7 @@ inline Atomic32 Acquire_Load(volatile const Atomic32* ptr) {
 }
 
 inline Atomic32 Release_Load(volatile const Atomic32* ptr) {
-  std::atomic_thread_fence(std::memory_order_seq_cst);
+  MemoryBarrier();
   return ((AtomicLocation32)ptr)->load(std::memory_order_relaxed);
 }
 
@@ -192,7 +202,7 @@ inline void NoBarrier_Store(volatile Atomic64* ptr, Atomic64 value) {
 
 inline void Acquire_Store(volatile Atomic64* ptr, Atomic64 value) {
   ((AtomicLocation64)ptr)->store(value, std::memory_order_relaxed);
-  std::atomic_thread_fence(std::memory_order_seq_cst);
+  MemoryBarrier();
 }
 
 inline void Release_Store(volatile Atomic64* ptr, Atomic64 value) {
@@ -208,7 +218,7 @@ inline Atomic64 Acquire_Load(volatile const Atomic64* ptr) {
 }
 
 inline Atomic64 Release_Load(volatile const Atomic64* ptr) {
-  std::atomic_thread_fence(std::memory_order_seq_cst);
+  MemoryBarrier();
   return ((AtomicLocation64)ptr)->load(std::memory_order_relaxed);
 }
 

security/sandbox/chromium/base/atomicops_internals_x86_msvc.h

@@ -11,11 +11,18 @@
 
 #include <intrin.h>
 
-#include <atomic>
-
 #include "base/macros.h"
 #include "build/build_config.h"
 
+#if defined(ARCH_CPU_64_BITS) || defined(__MINGW32__)
+// windows.h #defines this (only on x64). This causes problems because the
+// public API also uses MemoryBarrier at the public name for this fence. So, on
+// X64, undef it, and call its documented
+// (http://msdn.microsoft.com/en-us/library/windows/desktop/ms684208.aspx)
+// implementation directly.
+#undef MemoryBarrier
+#endif
+
 namespace base {
 namespace subtle {
 
@@ -49,6 +56,18 @@ inline Atomic32 NoBarrier_AtomicIncrement(volatile Atomic32* ptr,
   return Barrier_AtomicIncrement(ptr, increment);
 }
 
+inline void MemoryBarrier() {
+#if defined(ARCH_CPU_64_BITS)
+  // See #undef and note at the top of this file.
+  __faststorefence();
+#else
+  // We use the implementation of MemoryBarrier from WinNT.h
+  LONG barrier;
+
+  _InterlockedOr(&barrier, 0);
+#endif
+}
+
 inline Atomic32 Acquire_CompareAndSwap(volatile Atomic32* ptr,
                                        Atomic32 old_value,
                                        Atomic32 new_value) {
@@ -85,7 +104,7 @@ inline Atomic32 Acquire_Load(volatile const Atomic32* ptr) {
 }
 
 inline Atomic32 Release_Load(volatile const Atomic32* ptr) {
-  std::atomic_thread_fence(std::memory_order_seq_cst);
+  MemoryBarrier();
   return *ptr;
 }
 
@@ -154,7 +173,7 @@ inline Atomic64 Acquire_Load(volatile const Atomic64* ptr) {
 }
 
 inline Atomic64 Release_Load(volatile const Atomic64* ptr) {
-  std::atomic_thread_fence(std::memory_order_seq_cst);
+  MemoryBarrier();
   return *ptr;
 }
 

security/sandbox/chromium/base/base_switches.cc

@@ -7,7 +7,7 @@
 
 namespace switches {
 
-// Delays execution of TaskPriority::BEST_EFFORT tasks until shutdown.
+// Delays execution of base::TaskPriority::BEST_EFFORT tasks until shutdown.
 const char kDisableBestEffortTasks[] = "disable-best-effort-tasks";
 
 // Disables the crash reporting.
@@ -16,9 +16,6 @@ const char kDisableBreakpad[]               = "disable-breakpad";
 // Comma-separated list of feature names to disable. See also kEnableFeatures.
 const char kDisableFeatures[] = "disable-features";
 
-// Force disabling of low-end device mode when set.
-const char kDisableLowEndDeviceMode[] = "disable-low-end-device-mode";
-
 // Indicates that crash reporting should be enabled. On platforms where helper
 // processes cannot access to files needed to make this decision, this flag is
 // generated internally.
@@ -27,9 +24,15 @@ const char kEnableCrashReporter[]           = "enable-crash-reporter";
 // Comma-separated list of feature names to enable. See also kDisableFeatures.
 const char kEnableFeatures[] = "enable-features";
 
+// Generates full memory crash dump.
+const char kFullMemoryCrashReport[]         = "full-memory-crash-report";
+
 // Force low-end device mode when set.
 const char kEnableLowEndDeviceMode[]        = "enable-low-end-device-mode";
 
+// Force disabling of low-end device mode when set.
+const char kDisableLowEndDeviceMode[]       = "disable-low-end-device-mode";
+
 // This option can be used to force field trials when testing changes locally.
 // The argument is a list of name and value pairs, separated by slashes. If a
 // trial name is prefixed with an asterisk, that trial will start activated.
@@ -40,19 +43,44 @@ const char kEnableLowEndDeviceMode[]        = "enable-low-end-device-mode";
 // FieldTrialList::CreateTrialsFromString() in field_trial.h for details.
 const char kForceFieldTrials[]              = "force-fieldtrials";
 
-// Generates full memory crash dump.
-const char kFullMemoryCrashReport[] = "full-memory-crash-report";
-
-// Logs information about all tasks posted with TaskPriority::BEST_EFFORT. Use
-// this to diagnose issues that are thought to be caused by
-// TaskPriority::BEST_EFFORT execution fences. Note: Tasks posted to a
-// non-BEST_EFFORT UpdateableSequencedTaskRunner whose priority is later lowered
-// to BEST_EFFORT are not logged.
-const char kLogBestEffortTasks[] = "log-best-effort-tasks";
-
 // Suppresses all error dialogs when present.
 const char kNoErrorDialogs[]                = "noerrdialogs";
 
+// When running certain tests that spawn child processes, this switch indicates
+// to the test framework that the current process is a child process.
+const char kTestChildProcess[]              = "test-child-process";
+
+// When running certain tests that spawn child processes, this switch indicates
+// to the test framework that the current process should not initialize ICU to
+// avoid creating any scoped handles too early in startup.
+const char kTestDoNotInitializeIcu[]        = "test-do-not-initialize-icu";
+
+// Gives the default maximal active V-logging level; 0 is the default.
+// Normally positive values are used for V-logging levels.
+const char kV[]                             = "v";
+
+// Gives the per-module maximal V-logging levels to override the value
+// given by --v.  E.g. "my_module=2,foo*=3" would change the logging
+// level for all code in source files "my_module.*" and "foo*.*"
+// ("-inl" suffixes are also disregarded for this matching).
+//
+// Any pattern containing a forward or backward slash will be tested
+// against the whole pathname and not just the module.  E.g.,
+// "*/foo/bar/*=2" would change the logging level for all code in
+// source files under a "foo/bar" directory.
+const char kVModule[]                       = "vmodule";
+
+// Will wait for 60 seconds for a debugger to come to attach to the process.
+const char kWaitForDebugger[]               = "wait-for-debugger";
+
+// Sends trace events from these categories to a file.
+// --trace-to-file on its own sends to default categories.
+const char kTraceToFile[]                   = "trace-to-file";
+
+// Specifies the file name for --trace-to-file. If unspecified, it will
+// go to a default file name.
+const char kTraceToFileName[]               = "trace-to-file-name";
+
 // Starts the sampling based profiler for the browser process at startup. This
 // will only work if chrome has been built with the gn arg enable_profiling =
 // true. The output will go to the value of kProfilingFile.
@@ -74,45 +102,7 @@ const char kProfilingFile[] = "profiling-file";
 // specified.
 const char kProfilingFlush[] = "profiling-flush";
 
-// When running certain tests that spawn child processes, this switch indicates
-// to the test framework that the current process is a child process.
-const char kTestChildProcess[] = "test-child-process";
-
-// When running certain tests that spawn child processes, this switch indicates
-// to the test framework that the current process should not initialize ICU to
-// avoid creating any scoped handles too early in startup.
-const char kTestDoNotInitializeIcu[] = "test-do-not-initialize-icu";
-
-// Sends trace events from these categories to a file.
-// --trace-to-file on its own sends to default categories.
-const char kTraceToFile[] = "trace-to-file";
-
-// Specifies the file name for --trace-to-file. If unspecified, it will
-// go to a default file name.
-const char kTraceToFileName[] = "trace-to-file-name";
-
-// Gives the default maximal active V-logging level; 0 is the default.
-// Normally positive values are used for V-logging levels.
-const char kV[] = "v";
-
-// Gives the per-module maximal V-logging levels to override the value
-// given by --v.  E.g. "my_module=2,foo*=3" would change the logging
-// level for all code in source files "my_module.*" and "foo*.*"
-// ("-inl" suffixes are also disregarded for this matching).
-//
-// Any pattern containing a forward or backward slash will be tested
-// against the whole pathname and not just the module.  E.g.,
-// "*/foo/bar/*=2" would change the logging level for all code in
-// source files under a "foo/bar" directory.
-const char kVModule[] = "vmodule";
-
-// Will wait for 60 seconds for a debugger to come to attach to the process.
-const char kWaitForDebugger[] = "wait-for-debugger";
-
 #if defined(OS_WIN)
-// Disable high-resolution timer on Windows.
-const char kDisableHighResTimer[] = "disable-highres-timer";
-
 // Disables the USB keyboard detection for blocking the OSK on Win8+.
 const char kDisableUsbKeyboardDetect[]      = "disable-usb-keyboard-detect";
 #endif
@@ -136,14 +126,17 @@ const char kEnableCrashReporterForTesting[] =
 // Enables the reached code profiler that samples all threads in all processes
 // to determine which functions are almost never executed.
 const char kEnableReachedCodeProfiler[] = "enable-reached-code-profiler";
-#endif
 
-#if defined(OS_LINUX)
-// Controls whether or not retired instruction counts are surfaced for threads
-// in trace events on Linux.
+// Specifies optimization of memory layout of the native library using the
+// orderfile symbols given in base/android/library_loader/anchor_functions.h,
+// via madvise and changing the library prefetch behavior.
 //
-// This flag requires the BPF sandbox to be disabled.
-const char kEnableThreadInstructionCount[] = "enable-thread-instruction-count";
+// If this switch is not specified, an optimization may be done depending on a
+// synthetic trial. If specified, its values may be 'on' or 'off'. These
+// override the synthetic trial.
+//
+// This flag is only used on architectures with SUPPORTS_CODE_ORDERING defined.
+const char kOrderfileMemoryOptimization[] = "orderfile-memory-optimization";
 #endif
 
 }  // namespace switches

security/sandbox/chromium/base/base_switches.h

@@ -20,7 +20,6 @@ extern const char kEnableFeatures[];
 extern const char kEnableLowEndDeviceMode[];
 extern const char kForceFieldTrials[];
 extern const char kFullMemoryCrashReport[];
-extern const char kLogBestEffortTasks[];
 extern const char kNoErrorDialogs[];
 extern const char kProfilingAtStart[];
 extern const char kProfilingFile[];
@@ -34,7 +33,6 @@ extern const char kVModule[];
 extern const char kWaitForDebugger[];
 
 #if defined(OS_WIN)
-extern const char kDisableHighResTimer[];
 extern const char kDisableUsbKeyboardDetect[];
 #endif
 
@@ -51,10 +49,6 @@ extern const char kEnableReachedCodeProfiler[];
 extern const char kOrderfileMemoryOptimization[];
 #endif
 
-#if defined(OS_LINUX)
-extern const char kEnableThreadInstructionCount[];
-#endif
-
 }  // namespace switches
 
 #endif  // BASE_BASE_SWITCHES_H_

security/sandbox/chromium/base/bind.h

@@ -7,7 +7,6 @@
 
 #include <functional>
 #include <memory>
-#include <type_traits>
 #include <utility>
 
 #include "base/bind_internal.h"
@@ -42,7 +41,7 @@
 //   class C : public base::RefCounted<C> { void F(); };
 //   auto instance = base::MakeRefCounted<C>();
 //   auto cb = base::BindOnce(&C::F, instance);
-//   std::move(cb).Run();  // Identical to instance->F()
+//   cb.Run();  // Identical to instance->F()
 //
 // base::Bind is currently a type alias for base::BindRepeating(). In the
 // future, we expect to flip this to default to base::BindOnce().
@@ -180,36 +179,26 @@ template <bool is_once, bool is_method, typename... Args>
 using MakeUnwrappedTypeList =
     typename MakeUnwrappedTypeListImpl<is_once, is_method, Args...>::Type;
 
-// Used below in BindImpl to determine whether to use Invoker::Run or
-// Invoker::RunOnce.
-// Note: Simply using `kIsOnce ? &Invoker::RunOnce : &Invoker::Run` does not
-// work, since the compiler needs to check whether both expressions are
-// well-formed. Using `Invoker::Run` with a OnceCallback triggers a
-// static_assert, which is why the ternary expression does not compile.
-// TODO(crbug.com/752720): Remove this indirection once we have `if constexpr`.
-template <typename Invoker>
-constexpr auto GetInvokeFunc(std::true_type) {
-  return Invoker::RunOnce;
-}
+}  // namespace internal
 
-template <typename Invoker>
-constexpr auto GetInvokeFunc(std::false_type) {
-  return Invoker::Run;
-}
+// Bind as OnceCallback.
+template <typename Functor, typename... Args>
+inline OnceCallback<MakeUnboundRunType<Functor, Args...>>
+BindOnce(Functor&& functor, Args&&... args) {
+  static_assert(!internal::IsOnceCallback<std::decay_t<Functor>>() ||
+                    (std::is_rvalue_reference<Functor&&>() &&
+                     !std::is_const<std::remove_reference_t<Functor>>()),
+                "BindOnce requires non-const rvalue for OnceCallback binding."
+                " I.e.: base::BindOnce(std::move(callback)).");
 
-template <template <typename> class CallbackT,
-          typename Functor,
-          typename... Args>
-decltype(auto) BindImpl(Functor&& functor, Args&&... args) {
   // This block checks if each |args| matches to the corresponding params of the
   // target function. This check does not affect the behavior of Bind, but its
   // error message should be more readable.
-  static constexpr bool kIsOnce = IsOnceCallback<CallbackT<void()>>::value;
   using Helper = internal::BindTypeHelper<Functor, Args...>;
   using FunctorTraits = typename Helper::FunctorTraits;
   using BoundArgsList = typename Helper::BoundArgsList;
   using UnwrappedArgsList =
-      internal::MakeUnwrappedTypeList<kIsOnce, FunctorTraits::is_method,
+      internal::MakeUnwrappedTypeList<true, FunctorTraits::is_method,
                                       Args&&...>;
   using BoundParamsList = typename Helper::BoundParamsList;
   static_assert(internal::AssertBindArgsValidity<
@@ -220,14 +209,13 @@ decltype(auto) BindImpl(Functor&& functor, Args&&... args) {
   using BindState = internal::MakeBindStateType<Functor, Args...>;
   using UnboundRunType = MakeUnboundRunType<Functor, Args...>;
   using Invoker = internal::Invoker<BindState, UnboundRunType>;
-  using CallbackType = CallbackT<UnboundRunType>;
+  using CallbackType = OnceCallback<UnboundRunType>;
 
   // Store the invoke func into PolymorphicInvoke before casting it to
   // InvokeFuncStorage, so that we can ensure its type matches to
   // PolymorphicInvoke, to which CallbackType will cast back.
   using PolymorphicInvoke = typename CallbackType::PolymorphicInvoke;
-  PolymorphicInvoke invoke_func =
-      GetInvokeFunc<Invoker>(std::integral_constant<bool, kIsOnce>());
+  PolymorphicInvoke invoke_func = &Invoker::RunOnce;
 
   using InvokeFuncStorage = internal::BindStateBase::InvokeFuncStorage;
   return CallbackType(BindState::Create(
@@ -235,23 +223,6 @@ decltype(auto) BindImpl(Functor&& functor, Args&&... args) {
       std::forward<Functor>(functor), std::forward<Args>(args)...));
 }
 
-}  // namespace internal
-
-// Bind as OnceCallback.
-template <typename Functor, typename... Args>
-inline OnceCallback<MakeUnboundRunType<Functor, Args...>> BindOnce(
-    Functor&& functor,
-    Args&&... args) {
-  static_assert(!internal::IsOnceCallback<std::decay_t<Functor>>() ||
-                    (std::is_rvalue_reference<Functor&&>() &&
-                     !std::is_const<std::remove_reference_t<Functor>>()),
-                "BindOnce requires non-const rvalue for OnceCallback binding."
-                " I.e.: base::BindOnce(std::move(callback)).");
-
-  return internal::BindImpl<OnceCallback>(std::forward<Functor>(functor),
-                                          std::forward<Args>(args)...);
-}
-
 // Bind as RepeatingCallback.
 template <typename Functor, typename... Args>
 inline RepeatingCallback<MakeUnboundRunType<Functor, Args...>>
@@ -260,8 +231,36 @@ BindRepeating(Functor&& functor, Args&&... args) {
       !internal::IsOnceCallback<std::decay_t<Functor>>(),
       "BindRepeating cannot bind OnceCallback. Use BindOnce with std::move().");
 
-  return internal::BindImpl<RepeatingCallback>(std::forward<Functor>(functor),
-                                               std::forward<Args>(args)...);
+  // This block checks if each |args| matches to the corresponding params of the
+  // target function. This check does not affect the behavior of Bind, but its
+  // error message should be more readable.
+  using Helper = internal::BindTypeHelper<Functor, Args...>;
+  using FunctorTraits = typename Helper::FunctorTraits;
+  using BoundArgsList = typename Helper::BoundArgsList;
+  using UnwrappedArgsList =
+      internal::MakeUnwrappedTypeList<false, FunctorTraits::is_method,
+                                      Args&&...>;
+  using BoundParamsList = typename Helper::BoundParamsList;
+  static_assert(internal::AssertBindArgsValidity<
+                    std::make_index_sequence<Helper::num_bounds>, BoundArgsList,
+                    UnwrappedArgsList, BoundParamsList>::ok,
+                "The bound args need to be convertible to the target params.");
+
+  using BindState = internal::MakeBindStateType<Functor, Args...>;
+  using UnboundRunType = MakeUnboundRunType<Functor, Args...>;
+  using Invoker = internal::Invoker<BindState, UnboundRunType>;
+  using CallbackType = RepeatingCallback<UnboundRunType>;
+
+  // Store the invoke func into PolymorphicInvoke before casting it to
+  // InvokeFuncStorage, so that we can ensure its type matches to
+  // PolymorphicInvoke, to which CallbackType will cast back.
+  using PolymorphicInvoke = typename CallbackType::PolymorphicInvoke;
+  PolymorphicInvoke invoke_func = &Invoker::Run;
+
+  using InvokeFuncStorage = internal::BindStateBase::InvokeFuncStorage;
+  return CallbackType(BindState::Create(
+      reinterpret_cast<InvokeFuncStorage>(invoke_func),
+      std::forward<Functor>(functor), std::forward<Args>(args)...));
 }
 
 // Unannotated Bind.
@@ -276,27 +275,22 @@ Bind(Functor&& functor, Args&&... args) {
 
 // Special cases for binding to a base::Callback without extra bound arguments.
 template <typename Signature>
-OnceCallback<Signature> BindOnce(OnceCallback<Signature> callback) {
-  return callback;
-}
-
-template <typename Signature>
-OnceCallback<Signature> BindOnce(RepeatingCallback<Signature> callback) {
-  return callback;
+OnceCallback<Signature> BindOnce(OnceCallback<Signature> closure) {
+  return closure;
 }
 
 template <typename Signature>
 RepeatingCallback<Signature> BindRepeating(
-    RepeatingCallback<Signature> callback) {
-  return callback;
+    RepeatingCallback<Signature> closure) {
+  return closure;
 }
 
 template <typename Signature>
-Callback<Signature> Bind(Callback<Signature> callback) {
-  return callback;
+Callback<Signature> Bind(Callback<Signature> closure) {
+  return closure;
 }
 
-// Unretained() allows binding a non-refcounted class, and to disable
+// Unretained() allows Bind() to bind a non-refcounted class, and to disable
 // refcounting on arguments that are refcounted objects.
 //
 // EXAMPLE OF Unretained():
@@ -308,9 +302,9 @@ Callback<Signature> Bind(Callback<Signature> callback) {
 //
 //   // In some function somewhere.
 //   Foo foo;
-//   OnceClosure foo_callback =
-//       BindOnce(&Foo::func, Unretained(&foo));
-//   std::move(foo_callback).Run();  // Prints "Foo:f".
+//   Closure foo_callback =
+//       Bind(&Foo::func, Unretained(&foo));
+//   foo_callback.Run();  // Prints "Foo:f".
 //
 // Without the Unretained() wrapper on |&foo|, the above call would fail
 // to compile because Foo does not support the AddRef() and Release() methods.
@@ -327,13 +321,13 @@ static inline internal::UnretainedWrapper<T> Unretained(T* o) {
 //    void foo(RefCountedBytes* bytes) {}
 //
 //    scoped_refptr<RefCountedBytes> bytes = ...;
-//    OnceClosure callback = BindOnce(&foo, base::RetainedRef(bytes));
-//    std::move(callback).Run();
+//    Closure callback = Bind(&foo, base::RetainedRef(bytes));
+//    callback.Run();
 //
 // Without RetainedRef, the scoped_refptr would try to implicitly convert to
 // a raw pointer and fail compilation:
 //
-//    OnceClosure callback = BindOnce(&foo, bytes); // ERROR!
+//    Closure callback = Bind(&foo, bytes); // ERROR!
 template <typename T>
 static inline internal::RetainedRefWrapper<T> RetainedRef(T* o) {
   return internal::RetainedRefWrapper<T>(o);
@@ -343,41 +337,40 @@ static inline internal::RetainedRefWrapper<T> RetainedRef(scoped_refptr<T> o) {
   return internal::RetainedRefWrapper<T>(std::move(o));
 }
 
-// Owned() transfers ownership of an object to the callback resulting from
-// bind; the object will be deleted when the callback is deleted.
+// Owned() transfers ownership of an object to the Callback resulting from
+// bind; the object will be deleted when the Callback is deleted.
 //
 // EXAMPLE OF Owned():
 //
 //   void foo(int* arg) { cout << *arg << endl }
 //
 //   int* pn = new int(1);
-//   RepeatingClosure foo_callback = BindRepeating(&foo, Owned(pn));
+//   Closure foo_callback = Bind(&foo, Owned(pn));
 //
 //   foo_callback.Run();  // Prints "1"
 //   foo_callback.Run();  // Prints "1"
-//   *pn = 2;
+//   *n = 2;
 //   foo_callback.Run();  // Prints "2"
 //
 //   foo_callback.Reset();  // |pn| is deleted.  Also will happen when
 //                          // |foo_callback| goes out of scope.
 //
 // Without Owned(), someone would have to know to delete |pn| when the last
-// reference to the callback is deleted.
+// reference to the Callback is deleted.
 template <typename T>
 static inline internal::OwnedWrapper<T> Owned(T* o) {
   return internal::OwnedWrapper<T>(o);
 }
 
-template <typename T, typename Deleter>
-static inline internal::OwnedWrapper<T, Deleter> Owned(
-    std::unique_ptr<T, Deleter>&& ptr) {
-  return internal::OwnedWrapper<T, Deleter>(std::move(ptr));
+template <typename T>
+static inline internal::OwnedWrapper<T> Owned(std::unique_ptr<T>&& ptr) {
+  return internal::OwnedWrapper<T>(std::move(ptr));
 }
 
 // Passed() is for transferring movable-but-not-copyable types (eg. unique_ptr)
-// through a RepeatingCallback. Logically, this signifies a destructive transfer
-// of the state of the argument into the target function. Invoking
-// RepeatingCallback::Run() twice on a callback that was created with a Passed()
+// through a Callback. Logically, this signifies a destructive transfer of
+// the state of the argument into the target function.  Invoking
+// Callback::Run() twice on a Callback that was created with a Passed()
 // argument will CHECK() because the first invocation would have already
 // transferred ownership to the target function.
 //
@@ -394,22 +387,22 @@ static inline internal::OwnedWrapper<T, Deleter> Owned(
 //
 //   // |cb| is given ownership of Foo(). |f| is now NULL.
 //   // You can use std::move(f) in place of &f, but it's more verbose.
-//   RepeatingClosure cb = BindRepeating(&TakesOwnership, Passed(&f));
+//   Closure cb = Bind(&TakesOwnership, Passed(&f));
 //
 //   // Run was never called so |cb| still owns Foo() and deletes
 //   // it on Reset().
 //   cb.Reset();
 //
 //   // |cb| is given a new Foo created by CreateFoo().
-//   cb = BindRepeating(&TakesOwnership, Passed(CreateFoo()));
+//   cb = Bind(&TakesOwnership, Passed(CreateFoo()));
 //
 //   // |arg| in TakesOwnership() is given ownership of Foo(). |cb|
 //   // no longer owns Foo() and, if reset, would not delete Foo().
 //   cb.Run();  // Foo() is now transferred to |arg| and deleted.
 //   cb.Run();  // This CHECK()s since Foo() already been used once.
 //
-// We offer 2 syntaxes for calling Passed(). The first takes an rvalue and is
-// best suited for use with the return value of a function or other temporary
+// We offer 2 syntaxes for calling Passed().  The first takes an rvalue and
+// is best suited for use with the return value of a function or other temporary
 // rvalues. The second takes a pointer to the scoper and is just syntactic sugar
 // to avoid having to write Passed(std::move(scoper)).
 //
@@ -425,21 +418,21 @@ static inline internal::PassedWrapper<T> Passed(T* scoper) {
   return internal::PassedWrapper<T>(std::move(*scoper));
 }
 
-// IgnoreResult() is used to adapt a function or callback with a return type to
+// IgnoreResult() is used to adapt a function or Callback with a return type to
 // one with a void return. This is most useful if you have a function with,
 // say, a pesky ignorable bool return that you want to use with PostTask or
-// something else that expect a callback with a void return.
+// something else that expect a Callback with a void return.
 //
 // EXAMPLE OF IgnoreResult():
 //
 //   int DoSomething(int arg) { cout << arg << endl; }
 //
-//   // Assign to a callback with a void return type.
-//   OnceCallback<void(int)> cb = BindOnce(IgnoreResult(&DoSomething));
-//   std::move(cb).Run(1);  // Prints "1".
+//   // Assign to a Callback with a void return type.
+//   Callback<void(int)> cb = Bind(IgnoreResult(&DoSomething));
+//   cb->Run(1);  // Prints "1".
 //
-//   // Prints "2" on |ml|.
-//   ml->PostTask(FROM_HERE, BindOnce(IgnoreResult(&DoSomething), 2);
+//   // Prints "1" on |ml|.
+//   ml->PostTask(FROM_HERE, BindOnce(IgnoreResult(&DoSomething), 1);
 template <typename T>
 static inline internal::IgnoreResultHelper<T> IgnoreResult(T data) {
   return internal::IgnoreResultHelper<T>(std::move(data));
@@ -454,9 +447,8 @@ static inline internal::IgnoreResultHelper<T> IgnoreResult(T data) {
 // EXAMPLE OF RetainBlock():
 //
 //   // Wrap the block and bind it to a callback.
-//   OnceCallback<void(int)> cb =
-//       BindOnce(RetainBlock(^(int n) { NSLog(@"%d", n); }));
-//   std::move(cb).Run(1);  // Logs "1".
+//   Callback<void(int)> cb = Bind(RetainBlock(^(int n) { NSLog(@"%d", n); }));
+//   cb.Run(1);  // Logs "1".
 template <typename R, typename... Args>
 base::mac::ScopedBlock<R (^)(Args...)> RetainBlock(R (^block)(Args...)) {
   return base::mac::ScopedBlock<R (^)(Args...)>(block,

security/sandbox/chromium/base/bind_helpers.h

@@ -16,7 +16,7 @@
 #include "build/build_config.h"
 
 // This defines a set of simple functions and utilities that people want when
-// using {Once,Repeating}Callback<> and Bind{Once,Repeating}().
+// using Callback<> and Bind().
 
 namespace base {
 

security/sandbox/chromium/base/bind_internal.h

@@ -104,16 +104,15 @@ struct IgnoreResultHelper {
   T functor_;
 };
 
-template <typename T, typename Deleter = std::default_delete<T>>
+template <typename T>
 class OwnedWrapper {
  public:
   explicit OwnedWrapper(T* o) : ptr_(o) {}
-  explicit OwnedWrapper(std::unique_ptr<T, Deleter>&& ptr)
-      : ptr_(std::move(ptr)) {}
+  explicit OwnedWrapper(std::unique_ptr<T>&& ptr) : ptr_(std::move(ptr)) {}
   T* get() const { return ptr_.get(); }
 
  private:
-  std::unique_ptr<T, Deleter> ptr_;
+  std::unique_ptr<T> ptr_;
 };
 
 // PassedWrapper is a copyable adapter for a scoper that ignores const.
@@ -355,9 +354,10 @@ template <typename Functor, typename SFINAE>
 struct FunctorTraits;
 
 // For empty callable types.
-// This specialization is intended to allow binding captureless lambdas, based
-// on the fact that captureless lambdas are empty while capturing lambdas are
-// not. This also allows any functors as far as it's an empty class.
+// This specialization is intended to allow binding captureless lambdas by
+// base::Bind(), based on the fact that captureless lambdas are empty while
+// capturing lambdas are not. This also allows any functors as far as it's an
+// empty class.
 // Example:
 //
 //   // Captureless lambdas are allowed.
@@ -791,10 +791,10 @@ BanUnconstructedRefCountedReceiver(const Receiver& receiver, Unused&&...) {
   //
   //   scoped_refptr<Foo> oo = Foo::Create();
   DCHECK(receiver->HasAtLeastOneRef())
-      << "base::Bind{Once,Repeating}() refuses to create the first reference "
-         "to ref-counted objects. That typically happens around PostTask() in "
-         "their constructor, and such objects can be destroyed before `new` "
-         "returns if the task resolves fast enough.";
+      << "base::Bind() refuses to create the first reference to ref-counted "
+         "objects. That is typically happens around PostTask() in their "
+         "constructor, and such objects can be destroyed before `new` returns "
+         "if the task resolves fast enough.";
 }
 
 // BindState<>
@@ -917,7 +917,7 @@ using MakeBindStateType =
 //   };
 //
 //   WeakPtr<Foo> oo = nullptr;
-//   base::BindOnce(&Foo::bar, oo).Run();
+//   base::Bind(&Foo::bar, oo).Run();
 template <typename T>
 struct IsWeakReceiver : std::false_type {};
 
@@ -953,11 +953,9 @@ struct BindUnwrapTraits<internal::RetainedRefWrapper<T>> {
   static T* Unwrap(const internal::RetainedRefWrapper<T>& o) { return o.get(); }
 };
 
-template <typename T, typename Deleter>
-struct BindUnwrapTraits<internal::OwnedWrapper<T, Deleter>> {
-  static T* Unwrap(const internal::OwnedWrapper<T, Deleter>& o) {
-    return o.get();
-  }
+template <typename T>
+struct BindUnwrapTraits<internal::OwnedWrapper<T>> {
+  static T* Unwrap(const internal::OwnedWrapper<T>& o) { return o.get(); }
 };
 
 template <typename T>

security/sandbox/chromium/base/bits.h

@@ -1,209 +0,0 @@
-// Copyright (c) 2013 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-// This file defines some bit utilities.
-
-#ifndef BASE_BITS_H_
-#define BASE_BITS_H_
-
-#include <stddef.h>
-#include <stdint.h>
-
-#include <type_traits>
-
-#include "base/compiler_specific.h"
-#include "base/logging.h"
-#include "build/build_config.h"
-
-#if defined(COMPILER_MSVC)
-#include <intrin.h>
-#endif
-
-namespace base {
-namespace bits {
-
-// Returns true iff |value| is a power of 2.
-template <typename T,
-          typename = typename std::enable_if<std::is_integral<T>::value>>
-constexpr inline bool IsPowerOfTwo(T value) {
-  // From "Hacker's Delight": Section 2.1 Manipulating Rightmost Bits.
-  //
-  // Only positive integers with a single bit set are powers of two. If only one
-  // bit is set in x (e.g. 0b00000100000000) then |x-1| will have that bit set
-  // to zero and all bits to its right set to 1 (e.g. 0b00000011111111). Hence
-  // |x & (x-1)| is 0 iff x is a power of two.
-  return value > 0 && (value & (value - 1)) == 0;
-}
-
-// Round up |size| to a multiple of alignment, which must be a power of two.
-inline size_t Align(size_t size, size_t alignment) {
-  DCHECK(IsPowerOfTwo(alignment));
-  return (size + alignment - 1) & ~(alignment - 1);
-}
-
-// Round down |size| to a multiple of alignment, which must be a power of two.
-inline size_t AlignDown(size_t size, size_t alignment) {
-  DCHECK(IsPowerOfTwo(alignment));
-  return size & ~(alignment - 1);
-}
-
-// CountLeadingZeroBits(value) returns the number of zero bits following the
-// most significant 1 bit in |value| if |value| is non-zero, otherwise it
-// returns {sizeof(T) * 8}.
-// Example: 00100010 -> 2
-//
-// CountTrailingZeroBits(value) returns the number of zero bits preceding the
-// least significant 1 bit in |value| if |value| is non-zero, otherwise it
-// returns {sizeof(T) * 8}.
-// Example: 00100010 -> 1
-//
-// C does not have an operator to do this, but fortunately the various
-// compilers have built-ins that map to fast underlying processor instructions.
-#if defined(COMPILER_MSVC)
-
-template <typename T, unsigned bits = sizeof(T) * 8>
-ALWAYS_INLINE
-    typename std::enable_if<std::is_unsigned<T>::value && sizeof(T) <= 4,
-                            unsigned>::type
-    CountLeadingZeroBits(T x) {
-  static_assert(bits > 0, "invalid instantiation");
-  unsigned long index;
-  return LIKELY(_BitScanReverse(&index, static_cast<uint32_t>(x)))
-             ? (31 - index - (32 - bits))
-             : bits;
-}
-
-template <typename T, unsigned bits = sizeof(T) * 8>
-ALWAYS_INLINE
-    typename std::enable_if<std::is_unsigned<T>::value && sizeof(T) == 8,
-                            unsigned>::type
-    CountLeadingZeroBits(T x) {
-  static_assert(bits > 0, "invalid instantiation");
-  unsigned long index;
-// MSVC only supplies _BitScanReverse64 when building for a 64-bit target.
-#if defined(ARCH_CPU_64_BITS)
-  return LIKELY(_BitScanReverse64(&index, static_cast<uint64_t>(x)))
-             ? (63 - index)
-             : 64;
-#else
-  uint32_t left = static_cast<uint32_t>(x >> 32);
-  if (LIKELY(_BitScanReverse(&index, left)))
-    return 31 - index;
-
-  uint32_t right = static_cast<uint32_t>(x);
-  if (LIKELY(_BitScanReverse(&index, right)))
-    return 63 - index;
-
-  return 64;
-#endif
-}
-
-template <typename T, unsigned bits = sizeof(T) * 8>
-ALWAYS_INLINE
-    typename std::enable_if<std::is_unsigned<T>::value && sizeof(T) <= 4,
-                            unsigned>::type
-    CountTrailingZeroBits(T x) {
-  static_assert(bits > 0, "invalid instantiation");
-  unsigned long index;
-  return LIKELY(_BitScanForward(&index, static_cast<uint32_t>(x))) ? index
-                                                                   : bits;
-}
-
-template <typename T, unsigned bits = sizeof(T) * 8>
-ALWAYS_INLINE
-    typename std::enable_if<std::is_unsigned<T>::value && sizeof(T) == 8,
-                            unsigned>::type
-    CountTrailingZeroBits(T x) {
-  static_assert(bits > 0, "invalid instantiation");
-  unsigned long index;
-// MSVC only supplies _BitScanForward64 when building for a 64-bit target.
-#if defined(ARCH_CPU_64_BITS)
-  return LIKELY(_BitScanForward64(&index, static_cast<uint64_t>(x))) ? index
-                                                                     : 64;
-#else
-  uint32_t right = static_cast<uint32_t>(x);
-  if (LIKELY(_BitScanForward(&index, right)))
-    return index;
-
-  uint32_t left = static_cast<uint32_t>(x >> 32);
-  if (LIKELY(_BitScanForward(&index, left)))
-    return 32 + index;
-
-  return 64;
-#endif
-}
-
-ALWAYS_INLINE uint32_t CountLeadingZeroBits32(uint32_t x) {
-  return CountLeadingZeroBits(x);
-}
-
-ALWAYS_INLINE uint64_t CountLeadingZeroBits64(uint64_t x) {
-  return CountLeadingZeroBits(x);
-}
-
-#elif defined(COMPILER_GCC)
-
-// __builtin_clz has undefined behaviour for an input of 0, even though there's
-// clearly a return value that makes sense, and even though some processor clz
-// instructions have defined behaviour for 0. We could drop to raw __asm__ to
-// do better, but we'll avoid doing that unless we see proof that we need to.
-template <typename T, unsigned bits = sizeof(T) * 8>
-ALWAYS_INLINE
-    typename std::enable_if<std::is_unsigned<T>::value && sizeof(T) <= 8,
-                            unsigned>::type
-    CountLeadingZeroBits(T value) {
-  static_assert(bits > 0, "invalid instantiation");
-  return LIKELY(value)
-             ? bits == 64
-                   ? __builtin_clzll(static_cast<uint64_t>(value))
-                   : __builtin_clz(static_cast<uint32_t>(value)) - (32 - bits)
-             : bits;
-}
-
-template <typename T, unsigned bits = sizeof(T) * 8>
-ALWAYS_INLINE
-    typename std::enable_if<std::is_unsigned<T>::value && sizeof(T) <= 8,
-                            unsigned>::type
-    CountTrailingZeroBits(T value) {
-  return LIKELY(value) ? bits == 64
-                             ? __builtin_ctzll(static_cast<uint64_t>(value))
-                             : __builtin_ctz(static_cast<uint32_t>(value))
-                       : bits;
-}
-
-ALWAYS_INLINE uint32_t CountLeadingZeroBits32(uint32_t x) {
-  return CountLeadingZeroBits(x);
-}
-
-ALWAYS_INLINE uint64_t CountLeadingZeroBits64(uint64_t x) {
-  return CountLeadingZeroBits(x);
-}
-
-#endif
-
-ALWAYS_INLINE size_t CountLeadingZeroBitsSizeT(size_t x) {
-  return CountLeadingZeroBits(x);
-}
-
-ALWAYS_INLINE size_t CountTrailingZeroBitsSizeT(size_t x) {
-  return CountTrailingZeroBits(x);
-}
-
-// Returns the integer i such as 2^i <= n < 2^(i+1)
-inline int Log2Floor(uint32_t n) {
-  return 31 - CountLeadingZeroBits(n);
-}
-
-// Returns the integer i such as 2^(i-1) < n <= 2^i
-inline int Log2Ceiling(uint32_t n) {
-  // When n == 0, we want the function to return -1.
-  // When n == 0, (n - 1) will underflow to 0xFFFFFFFF, which is
-  // why the statement below starts with (n ? 32 : -1).
-  return (n ? 32 : -1) - CountLeadingZeroBits(n - 1);
-}
-
-}  // namespace bits
-}  // namespace base
-
-#endif  // BASE_BITS_H_

security/sandbox/chromium/base/callback.h

@@ -2,9 +2,8 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 //
-// NOTE: Header files that do not require the full definition of
-// base::{Once,Repeating}Callback or base::{Once,Repeating}Closure should
-// #include "base/callback_forward.h" instead of this file.
+// NOTE: Header files that do not require the full definition of Callback or
+// Closure should #include "base/callback_forward.h" instead of this file.
 
 #ifndef BASE_CALLBACK_H_
 #define BASE_CALLBACK_H_
@@ -43,7 +42,7 @@
 //
 // Callbacks also support cancellation. A common use is binding the receiver
 // object as a WeakPtr<T>. If that weak pointer is invalidated, calling Run()
-// will be a no-op. Note that |IsCancelled()| and |is_null()| are distinct:
+// will be a no-op. Note that |is_cancelled()| and |is_null()| are distinct:
 // simply cancelling a callback will not also make it null.
 //
 // base::Callback is currently a type alias for base::RepeatingCallback. In the
@@ -118,14 +117,10 @@ class RepeatingCallback<R(Args...)> : public internal::CallbackBaseCopyable {
   RepeatingCallback(RepeatingCallback&&) noexcept = default;
   RepeatingCallback& operator=(RepeatingCallback&&) noexcept = default;
 
-  bool operator==(const RepeatingCallback& other) const {
+  bool Equals(const RepeatingCallback& other) const {
     return EqualsInternal(other);
   }
 
-  bool operator!=(const RepeatingCallback& other) const {
-    return !operator==(other);
-  }
-
   R Run(Args... args) const & {
     PolymorphicInvoke f =
         reinterpret_cast<PolymorphicInvoke>(this->polymorphic_invoke());
@@ -140,7 +135,7 @@ class RepeatingCallback<R(Args...)> : public internal::CallbackBaseCopyable {
     RepeatingCallback cb = std::move(*this);
     PolymorphicInvoke f =
         reinterpret_cast<PolymorphicInvoke>(cb.polymorphic_invoke());
-    return f(std::move(cb).bind_state_.get(), std::forward<Args>(args)...);
+    return f(cb.bind_state_.get(), std::forward<Args>(args)...);
   }
 };
 

security/sandbox/chromium/base/callback_forward.h

@@ -16,9 +16,8 @@ class RepeatingCallback;
 template <typename Signature>
 using Callback = RepeatingCallback<Signature>;
 
-// Syntactic sugar to make OnceClosure<void()> and RepeatingClosure<void()>
-// easier to declare since they will be used in a lot of APIs with delayed
-// execution.
+// Syntactic sugar to make Callback<void()> easier to declare since it
+// will be used in a lot of APIs with delayed execution.
 using OnceClosure = OnceCallback<void()>;
 using RepeatingClosure = RepeatingCallback<void()>;
 using Closure = Callback<void()>;

security/sandbox/chromium/base/callback_internal.h

@@ -19,19 +19,14 @@ struct FakeBindState;
 
 namespace internal {
 
-class BindStateBase;
-class FinallyExecutorCommon;
-class ThenAndCatchExecutorCommon;
+class CallbackBase;
+class CallbackBaseCopyable;
 
-template <typename ReturnType>
-class PostTaskExecutor;
+class BindStateBase;
 
 template <typename Functor, typename... BoundArgs>
 struct BindState;
 
-class CallbackBase;
-class CallbackBaseCopyable;
-
 struct BindStateBaseRefCountTraits {
   static void Destruct(const BindStateBase*);
 };
@@ -45,10 +40,11 @@ using PassingType = std::conditional_t<std::is_scalar<T>::value, T, T&&>;
 // DoInvoke function to perform the function execution.  This allows
 // us to shield the Callback class from the types of the bound argument via
 // "type erasure."
-// At the base level, the only task is to add reference counting data. Avoid
-// using or inheriting any virtual functions. Creating a vtable for every
-// BindState template instantiation results in a lot of bloat. Its only task is
-// to call the destructor which can be done with a function pointer.
+// At the base level, the only task is to add reference counting data. Don't use
+// RefCountedThreadSafe since it requires the destructor to be a virtual method.
+// Creating a vtable for every BindState template instantiation results in a lot
+// of bloat. Its only task is to call the destructor which can be done with a
+// function pointer.
 class BASE_EXPORT BindStateBase
     : public RefCountedThreadSafe<BindStateBase, BindStateBaseRefCountTraits> {
  public:
@@ -139,12 +135,6 @@ class BASE_EXPORT CallbackBase {
   void Reset();
 
  protected:
-  friend class FinallyExecutorCommon;
-  friend class ThenAndCatchExecutorCommon;
-
-  template <typename ReturnType>
-  friend class PostTaskExecutor;
-
   using InvokeFuncStorage = BindStateBase::InvokeFuncStorage;
 
   // Returns true if this callback equals |other|. |other| may be null.

security/sandbox/chromium/base/compiler_specific.h

@@ -9,10 +9,6 @@
 
 #if defined(COMPILER_MSVC)
 
-#if !defined(__clang__)
-#error "Only clang-cl is supported on Windows, see https://crbug.com/988071"
-#endif
-
 // Macros for suppressing and disabling warnings on MSVC.
 //
 // Warning numbers are enumerated at:
@@ -26,8 +22,8 @@
 
 // MSVC_PUSH_DISABLE_WARNING pushes |n| onto a stack of warnings to be disabled.
 // The warning remains disabled until popped by MSVC_POP_WARNING.
-#define MSVC_PUSH_DISABLE_WARNING(n) \
-  __pragma(warning(push)) __pragma(warning(disable : n))
+#define MSVC_PUSH_DISABLE_WARNING(n) __pragma(warning(push)) \
+                                     __pragma(warning(disable:n))
 
 // Pop effects of innermost MSVC_PUSH_* macro.
 #define MSVC_POP_WARNING() __pragma(warning(pop))
@@ -141,7 +137,7 @@
 // For member functions, the implicit this parameter counts as index 1.
 #if defined(COMPILER_GCC) || defined(__clang__)
 #define PRINTF_FORMAT(format_param, dots_param) \
-  __attribute__((format(printf, format_param, dots_param)))
+    __attribute__((format(printf, format_param, dots_param)))
 #else
 #define PRINTF_FORMAT(format_param, dots_param)
 #endif
@@ -170,14 +166,14 @@
 // Mark a memory region fully initialized.
 // Use this to annotate code that deliberately reads uninitialized data, for
 // example a GC scavenging root set pointers from the stack.
-#define MSAN_UNPOISON(p, size) __msan_unpoison(p, size)
+#define MSAN_UNPOISON(p, size)  __msan_unpoison(p, size)
 
 // Check a memory region for initializedness, as if it was being used here.
 // If any bits are uninitialized, crash with an MSan report.
 // Use this to sanitize data which MSan won't be able to track, e.g. before
 // passing data to another process via shared memory.
 #define MSAN_CHECK_MEM_IS_INITIALIZED(p, size) \
-  __msan_check_mem_is_initialized(p, size)
+    __msan_check_mem_is_initialized(p, size)
 #else  // MEMORY_SANITIZER
 #define MSAN_UNPOISON(p, size)
 #define MSAN_CHECK_MEM_IS_INITIALIZED(p, size)
@@ -242,57 +238,4 @@
 #define PRETTY_FUNCTION __func__
 #endif
 
-#if !defined(CPU_ARM_NEON)
-#if defined(__arm__)
-#if !defined(__ARMEB__) && !defined(__ARM_EABI__) && !defined(__EABI__) && \
-    !defined(__VFP_FP__) && !defined(_WIN32_WCE) && !defined(ANDROID)
-#error Chromium does not support middle endian architecture
-#endif
-#if defined(__ARM_NEON__)
-#define CPU_ARM_NEON 1
-#endif
-#endif  // defined(__arm__)
-#endif  // !defined(CPU_ARM_NEON)
-
-#if !defined(HAVE_MIPS_MSA_INTRINSICS)
-#if defined(__mips_msa) && defined(__mips_isa_rev) && (__mips_isa_rev >= 5)
-#define HAVE_MIPS_MSA_INTRINSICS 1
-#endif
-#endif
-
-#if defined(__clang__) && __has_attribute(uninitialized)
-// Attribute "uninitialized" disables -ftrivial-auto-var-init=pattern for
-// the specified variable.
-// Library-wide alternative is
-// 'configs -= [ "//build/config/compiler:default_init_stack_vars" ]' in .gn
-// file.
-//
-// See "init_stack_vars" in build/config/compiler/BUILD.gn and
-// http://crbug.com/977230
-// "init_stack_vars" is enabled for non-official builds and we hope to enable it
-// in official build in 2020 as well. The flag writes fixed pattern into
-// uninitialized parts of all local variables. In rare cases such initialization
-// is undesirable and attribute can be used:
-//   1. Degraded performance
-// In most cases compiler is able to remove additional stores. E.g. if memory is
-// never accessed or properly initialized later. Preserved stores mostly will
-// not affect program performance. However if compiler failed on some
-// performance critical code we can get a visible regression in a benchmark.
-//   2. memset, memcpy calls
-// Compiler may replaces some memory writes with memset or memcpy calls. This is
-// not -ftrivial-auto-var-init specific, but it can happen more likely with the
-// flag. It can be a problem if code is not linked with C run-time library.
-//
-// Note: The flag is security risk mitigation feature. So in future the
-// attribute uses should be avoided when possible. However to enable this
-// mitigation on the most of the code we need to be less strict now and minimize
-// number of exceptions later. So if in doubt feel free to use attribute, but
-// please document the problem for someone who is going to cleanup it later.
-// E.g. platform, bot, benchmark or test name in patch description or next to
-// the attribute.
-#define STACK_UNINITIALIZED __attribute__((uninitialized))
-#else
-#define STACK_UNINITIALIZED
-#endif
-
 #endif  // BASE_COMPILER_SPECIFIC_H_

security/sandbox/chromium/base/containers/buffer_iterator.h

@@ -1,145 +0,0 @@
-// Copyright 2019 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#ifndef BASE_CONTAINERS_BUFFER_ITERATOR_H_
-#define BASE_CONTAINERS_BUFFER_ITERATOR_H_
-
-#include <type_traits>
-
-#include "base/bit_cast.h"
-#include "base/containers/span.h"
-#include "base/numerics/checked_math.h"
-
-namespace base {
-
-// BufferIterator is a bounds-checked container utility to access variable-
-// length, heterogeneous structures contained within a buffer. If the data are
-// homogeneous, use base::span<> instead.
-//
-// After being created with a weakly-owned buffer, BufferIterator returns
-// pointers to structured data within the buffer. After each method call that
-// returns data in the buffer, the iterator position is advanced by the byte
-// size of the object (or span of objects) returned. If there are not enough
-// bytes remaining in the buffer to return the requested object(s), a nullptr
-// or empty span is returned.
-//
-// This class is similar to base::Pickle, which should be preferred for
-// serializing to disk. Pickle versions its header and does not support writing
-// structures, which are problematic for serialization due to struct padding and
-// version shear concerns.
-//
-// Example usage:
-//
-//    std::vector<uint8_t> buffer(4096);
-//    if (!ReadSomeData(&buffer, buffer.size())) {
-//      LOG(ERROR) << "Failed to read data.";
-//      return false;
-//    }
-//
-//    BufferIterator<uint8_t> iterator(buffer);
-//    uint32_t* num_items = iterator.Object<uint32_t>();
-//    if (!num_items) {
-//      LOG(ERROR) << "No num_items field."
-//      return false;
-//    }
-//
-//    base::span<const item_struct> items =
-//        iterator.Span<item_struct>(*num_items);
-//    if (items.size() != *num_items) {
-//      LOG(ERROR) << "Not enough items.";
-//      return false;
-//    }
-//
-//    // ... validate the objects in |items|.
-template <typename B>
-class BufferIterator {
- public:
-  static_assert(std::is_same<std::remove_const_t<B>, char>::value ||
-                    std::is_same<std::remove_const_t<B>, unsigned char>::value,
-                "Underlying buffer type must be char-type.");
-
-  BufferIterator() {}
-  BufferIterator(B* data, size_t size)
-      : BufferIterator(make_span(data, size)) {}
-  explicit BufferIterator(span<B> buffer)
-      : buffer_(buffer), remaining_(buffer) {}
-  ~BufferIterator() {}
-
-  // Returns a pointer to a mutable structure T in the buffer at the current
-  // position. On success, the iterator position is advanced by sizeof(T). If
-  // there are not sizeof(T) bytes remaining in the buffer, returns nullptr.
-  template <typename T,
-            typename =
-                typename std::enable_if_t<std::is_trivially_copyable<T>::value>>
-  T* MutableObject() {
-    size_t size = sizeof(T);
-    size_t next_position;
-    if (!CheckAdd(position(), size).AssignIfValid(&next_position))
-      return nullptr;
-    if (next_position > total_size())
-      return nullptr;
-    T* t = bit_cast<T*>(remaining_.data());
-    remaining_ = remaining_.subspan(size);
-    return t;
-  }
-
-  // Returns a const pointer to an object of type T in the buffer at the current
-  // position.
-  template <typename T,
-            typename =
-                typename std::enable_if_t<std::is_trivially_copyable<T>::value>>
-  const T* Object() {
-    return MutableObject<const T>();
-  }
-
-  // Returns a span of |count| T objects in the buffer at the current position.
-  // On success, the iterator position is advanced by |sizeof(T) * count|. If
-  // there are not enough bytes remaining in the buffer to fulfill the request,
-  // returns an empty span.
-  template <typename T,
-            typename =
-                typename std::enable_if_t<std::is_trivially_copyable<T>::value>>
-  span<T> MutableSpan(size_t count) {
-    size_t size;
-    if (!CheckMul(sizeof(T), count).AssignIfValid(&size))
-      return span<T>();
-    size_t next_position;
-    if (!CheckAdd(position(), size).AssignIfValid(&next_position))
-      return span<T>();
-    if (next_position > total_size())
-      return span<T>();
-    auto result = span<T>(bit_cast<T*>(remaining_.data()), count);
-    remaining_ = remaining_.subspan(size);
-    return result;
-  }
-
-  // Returns a span to |count| const objects of type T in the buffer at the
-  // current position.
-  template <typename T,
-            typename =
-                typename std::enable_if_t<std::is_trivially_copyable<T>::value>>
-  span<const T> Span(size_t count) {
-    return MutableSpan<const T>(count);
-  }
-
-  // Resets the iterator position to the absolute offset |to|.
-  void Seek(size_t to) { remaining_ = buffer_.subspan(to); }
-
-  // Returns the total size of the underlying buffer.
-  size_t total_size() { return buffer_.size(); }
-
-  // Returns the current position in the buffer.
-  size_t position() { return buffer_.size_bytes() - remaining_.size_bytes(); }
-
- private:
-  // The original buffer that the iterator was constructed with.
-  const span<B> buffer_;
-  // A subspan of |buffer_| containing the remaining bytes to iterate over.
-  span<B> remaining_;
-  // Copy and assign allowed.
-};
-
-}  // namespace base
-
-#endif  // BASE_CONTAINERS_BUFFER_ITERATOR_H_

security/sandbox/chromium/base/containers/checked_iterators.h

@@ -1,205 +0,0 @@
-// Copyright 2018 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#ifndef BASE_CONTAINERS_CHECKED_ITERATORS_H_
-#define BASE_CONTAINERS_CHECKED_ITERATORS_H_
-
-#include <iterator>
-#include <memory>
-#include <type_traits>
-
-#include "base/containers/util.h"
-#include "base/logging.h"
-
-namespace base {
-
-template <typename T>
-class CheckedContiguousIterator {
- public:
-  using difference_type = std::ptrdiff_t;
-  using value_type = std::remove_cv_t<T>;
-  using pointer = T*;
-  using reference = T&;
-  using iterator_category = std::random_access_iterator_tag;
-
-  // Required for converting constructor below.
-  template <typename U>
-  friend class CheckedContiguousIterator;
-
-  constexpr CheckedContiguousIterator() = default;
-  constexpr CheckedContiguousIterator(T* start, const T* end)
-      : CheckedContiguousIterator(start, start, end) {}
-  constexpr CheckedContiguousIterator(const T* start, T* current, const T* end)
-      : start_(start), current_(current), end_(end) {
-    CHECK_LE(start, current);
-    CHECK_LE(current, end);
-  }
-  constexpr CheckedContiguousIterator(const CheckedContiguousIterator& other) =
-      default;
-
-  // Converting constructor allowing conversions like CCI<T> to CCI<const T>,
-  // but disallowing CCI<const T> to CCI<T> or CCI<Derived> to CCI<Base>, which
-  // are unsafe. Furthermore, this is the same condition as used by the
-  // converting constructors of std::span<T> and std::unique_ptr<T[]>.
-  // See https://wg21.link/n4042 for details.
-  template <
-      typename U,
-      std::enable_if_t<std::is_convertible<U (*)[], T (*)[]>::value>* = nullptr>
-  constexpr CheckedContiguousIterator(const CheckedContiguousIterator<U>& other)
-      : start_(other.start_), current_(other.current_), end_(other.end_) {
-    // We explicitly don't delegate to the 3-argument constructor here. Its
-    // CHECKs would be redundant, since we expect |other| to maintain its own
-    // invariant. However, DCHECKs never hurt anybody. Presumably.
-    DCHECK_LE(other.start_, other.current_);
-    DCHECK_LE(other.current_, other.end_);
-  }
-
-  ~CheckedContiguousIterator() = default;
-
-  constexpr CheckedContiguousIterator& operator=(
-      const CheckedContiguousIterator& other) = default;
-
-  constexpr bool operator==(const CheckedContiguousIterator& other) const {
-    CheckComparable(other);
-    return current_ == other.current_;
-  }
-
-  constexpr bool operator!=(const CheckedContiguousIterator& other) const {
-    CheckComparable(other);
-    return current_ != other.current_;
-  }
-
-  constexpr bool operator<(const CheckedContiguousIterator& other) const {
-    CheckComparable(other);
-    return current_ < other.current_;
-  }
-
-  constexpr bool operator<=(const CheckedContiguousIterator& other) const {
-    CheckComparable(other);
-    return current_ <= other.current_;
-  }
-
-  constexpr bool operator>(const CheckedContiguousIterator& other) const {
-    CheckComparable(other);
-    return current_ > other.current_;
-  }
-
-  constexpr bool operator>=(const CheckedContiguousIterator& other) const {
-    CheckComparable(other);
-    return current_ >= other.current_;
-  }
-
-  constexpr CheckedContiguousIterator& operator++() {
-    CHECK_NE(current_, end_);
-    ++current_;
-    return *this;
-  }
-
-  constexpr CheckedContiguousIterator operator++(int) {
-    CheckedContiguousIterator old = *this;
-    ++*this;
-    return old;
-  }
-
-  constexpr CheckedContiguousIterator& operator--() {
-    CHECK_NE(current_, start_);
-    --current_;
-    return *this;
-  }
-
-  constexpr CheckedContiguousIterator operator--(int) {
-    CheckedContiguousIterator old = *this;
-    --*this;
-    return old;
-  }
-
-  constexpr CheckedContiguousIterator& operator+=(difference_type rhs) {
-    if (rhs > 0) {
-      CHECK_LE(rhs, end_ - current_);
-    } else {
-      CHECK_LE(-rhs, current_ - start_);
-    }
-    current_ += rhs;
-    return *this;
-  }
-
-  constexpr CheckedContiguousIterator operator+(difference_type rhs) const {
-    CheckedContiguousIterator it = *this;
-    it += rhs;
-    return it;
-  }
-
-  constexpr CheckedContiguousIterator& operator-=(difference_type rhs) {
-    if (rhs < 0) {
-      CHECK_LE(-rhs, end_ - current_);
-    } else {
-      CHECK_LE(rhs, current_ - start_);
-    }
-    current_ -= rhs;
-    return *this;
-  }
-
-  constexpr CheckedContiguousIterator operator-(difference_type rhs) const {
-    CheckedContiguousIterator it = *this;
-    it -= rhs;
-    return it;
-  }
-
-  constexpr friend difference_type operator-(
-      const CheckedContiguousIterator& lhs,
-      const CheckedContiguousIterator& rhs) {
-    CHECK_EQ(lhs.start_, rhs.start_);
-    CHECK_EQ(lhs.end_, rhs.end_);
-    return lhs.current_ - rhs.current_;
-  }
-
-  constexpr reference operator*() const {
-    CHECK_NE(current_, end_);
-    return *current_;
-  }
-
-  constexpr pointer operator->() const {
-    CHECK_NE(current_, end_);
-    return current_;
-  }
-
-  constexpr reference operator[](difference_type rhs) const {
-    CHECK_GE(rhs, 0);
-    CHECK_LT(rhs, end_ - current_);
-    return current_[rhs];
-  }
-
-  static bool IsRangeMoveSafe(const CheckedContiguousIterator& from_begin,
-                              const CheckedContiguousIterator& from_end,
-                              const CheckedContiguousIterator& to)
-      WARN_UNUSED_RESULT {
-    if (from_end < from_begin)
-      return false;
-    const auto from_begin_uintptr = get_uintptr(from_begin.current_);
-    const auto from_end_uintptr = get_uintptr(from_end.current_);
-    const auto to_begin_uintptr = get_uintptr(to.current_);
-    const auto to_end_uintptr =
-        get_uintptr((to + std::distance(from_begin, from_end)).current_);
-
-    return to_begin_uintptr >= from_end_uintptr ||
-           to_end_uintptr <= from_begin_uintptr;
-  }
-
- private:
-  constexpr void CheckComparable(const CheckedContiguousIterator& other) const {
-    CHECK_EQ(start_, other.start_);
-    CHECK_EQ(end_, other.end_);
-  }
-
-  const T* start_ = nullptr;
-  T* current_ = nullptr;
-  const T* end_ = nullptr;
-};
-
-template <typename T>
-using CheckedContiguousConstIterator = CheckedContiguousIterator<const T>;
-
-}  // namespace base
-
-#endif  // BASE_CONTAINERS_CHECKED_ITERATORS_H_

security/sandbox/chromium/base/containers/circular_deque.h

@@ -14,7 +14,6 @@
 #include "base/containers/vector_buffer.h"
 #include "base/logging.h"
 #include "base/macros.h"
-#include "base/stl_util.h"
 #include "base/template_util.h"
 
 // base::circular_deque is similar to std::deque. Unlike std::deque, the
@@ -522,15 +521,15 @@ class circular_deque {
     return buffer_[i - right_size];
   }
   value_type& at(size_type i) {
-    return const_cast<value_type&>(as_const(*this).at(i));
+    return const_cast<value_type&>(
+        const_cast<const circular_deque*>(this)->at(i));
   }
 
-  value_type& operator[](size_type i) {
-    return const_cast<value_type&>(as_const(*this)[i]);
+  value_type& operator[](size_type i) { return at(i); }
+  const value_type& operator[](size_type i) const {
+    return const_cast<circular_deque*>(this)->at(i);
   }
 
-  const value_type& operator[](size_type i) const { return at(i); }
-
   value_type& front() {
     DCHECK(!empty());
     return buffer_[begin_];

security/sandbox/chromium/base/containers/span.h

@@ -1,530 +0,0 @@
-// Copyright 2017 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#ifndef BASE_CONTAINERS_SPAN_H_
-#define BASE_CONTAINERS_SPAN_H_
-
-#include <stddef.h>
-
-#include <algorithm>
-#include <array>
-#include <iterator>
-#include <limits>
-#include <type_traits>
-#include <utility>
-
-#include "base/containers/checked_iterators.h"
-#include "base/logging.h"
-#include "base/macros.h"
-#include "base/stl_util.h"
-
-namespace base {
-
-// [views.constants]
-constexpr size_t dynamic_extent = std::numeric_limits<size_t>::max();
-
-template <typename T, size_t Extent = dynamic_extent>
-class span;
-
-namespace internal {
-
-template <typename T>
-struct ExtentImpl : std::integral_constant<size_t, dynamic_extent> {};
-
-template <typename T, size_t N>
-struct ExtentImpl<T[N]> : std::integral_constant<size_t, N> {};
-
-template <typename T, size_t N>
-struct ExtentImpl<std::array<T, N>> : std::integral_constant<size_t, N> {};
-
-template <typename T, size_t N>
-struct ExtentImpl<base::span<T, N>> : std::integral_constant<size_t, N> {};
-
-template <typename T>
-using Extent = ExtentImpl<std::remove_cv_t<std::remove_reference_t<T>>>;
-
-template <typename T>
-struct IsSpanImpl : std::false_type {};
-
-template <typename T, size_t Extent>
-struct IsSpanImpl<span<T, Extent>> : std::true_type {};
-
-template <typename T>
-using IsSpan = IsSpanImpl<std::decay_t<T>>;
-
-template <typename T>
-struct IsStdArrayImpl : std::false_type {};
-
-template <typename T, size_t N>
-struct IsStdArrayImpl<std::array<T, N>> : std::true_type {};
-
-template <typename T>
-using IsStdArray = IsStdArrayImpl<std::decay_t<T>>;
-
-template <typename T>
-using IsCArray = std::is_array<std::remove_reference_t<T>>;
-
-template <typename From, typename To>
-using IsLegalDataConversion = std::is_convertible<From (*)[], To (*)[]>;
-
-template <typename Container, typename T>
-using ContainerHasConvertibleData = IsLegalDataConversion<
-    std::remove_pointer_t<decltype(base::data(std::declval<Container>()))>,
-    T>;
-
-template <typename Container>
-using ContainerHasIntegralSize =
-    std::is_integral<decltype(base::size(std::declval<Container>()))>;
-
-template <typename From, size_t FromExtent, typename To, size_t ToExtent>
-using EnableIfLegalSpanConversion =
-    std::enable_if_t<(ToExtent == dynamic_extent || ToExtent == FromExtent) &&
-                     IsLegalDataConversion<From, To>::value>;
-
-// SFINAE check if Array can be converted to a span<T>.
-template <typename Array, typename T, size_t Extent>
-using EnableIfSpanCompatibleArray =
-    std::enable_if_t<(Extent == dynamic_extent ||
-                      Extent == internal::Extent<Array>::value) &&
-                     ContainerHasConvertibleData<Array, T>::value>;
-
-// SFINAE check if Container can be converted to a span<T>.
-template <typename Container, typename T>
-using IsSpanCompatibleContainer =
-    std::conditional_t<!IsSpan<Container>::value &&
-                           !IsStdArray<Container>::value &&
-                           !IsCArray<Container>::value &&
-                           ContainerHasConvertibleData<Container, T>::value &&
-                           ContainerHasIntegralSize<Container>::value,
-                       std::true_type,
-                       std::false_type>;
-
-template <typename Container, typename T>
-using EnableIfSpanCompatibleContainer =
-    std::enable_if_t<IsSpanCompatibleContainer<Container, T>::value>;
-
-template <typename Container, typename T, size_t Extent>
-using EnableIfSpanCompatibleContainerAndSpanIsDynamic =
-    std::enable_if_t<IsSpanCompatibleContainer<Container, T>::value &&
-                     Extent == dynamic_extent>;
-
-// A helper template for storing the size of a span. Spans with static extents
-// don't require additional storage, since the extent itself is specified in the
-// template parameter.
-template <size_t Extent>
-class ExtentStorage {
- public:
-  constexpr explicit ExtentStorage(size_t size) noexcept {}
-  constexpr size_t size() const noexcept { return Extent; }
-};
-
-// Specialization of ExtentStorage for dynamic extents, which do require
-// explicit storage for the size.
-template <>
-struct ExtentStorage<dynamic_extent> {
-  constexpr explicit ExtentStorage(size_t size) noexcept : size_(size) {}
-  constexpr size_t size() const noexcept { return size_; }
-
- private:
-  size_t size_;
-};
-
-}  // namespace internal
-
-// A span is a value type that represents an array of elements of type T. Since
-// it only consists of a pointer to memory with an associated size, it is very
-// light-weight. It is cheap to construct, copy, move and use spans, so that
-// users are encouraged to use it as a pass-by-value parameter. A span does not
-// own the underlying memory, so care must be taken to ensure that a span does
-// not outlive the backing store.
-//
-// span is somewhat analogous to StringPiece, but with arbitrary element types,
-// allowing mutation if T is non-const.
-//
-// span is implicitly convertible from C++ arrays, as well as most [1]
-// container-like types that provide a data() and size() method (such as
-// std::vector<T>). A mutable span<T> can also be implicitly converted to an
-// immutable span<const T>.
-//
-// Consider using a span for functions that take a data pointer and size
-// parameter: it allows the function to still act on an array-like type, while
-// allowing the caller code to be a bit more concise.
-//
-// For read-only data access pass a span<const T>: the caller can supply either
-// a span<const T> or a span<T>, while the callee will have a read-only view.
-// For read-write access a mutable span<T> is required.
-//
-// Without span:
-//   Read-Only:
-//     // std::string HexEncode(const uint8_t* data, size_t size);
-//     std::vector<uint8_t> data_buffer = GenerateData();
-//     std::string r = HexEncode(data_buffer.data(), data_buffer.size());
-//
-//  Mutable:
-//     // ssize_t SafeSNPrintf(char* buf, size_t N, const char* fmt, Args...);
-//     char str_buffer[100];
-//     SafeSNPrintf(str_buffer, sizeof(str_buffer), "Pi ~= %lf", 3.14);
-//
-// With span:
-//   Read-Only:
-//     // std::string HexEncode(base::span<const uint8_t> data);
-//     std::vector<uint8_t> data_buffer = GenerateData();
-//     std::string r = HexEncode(data_buffer);
-//
-//  Mutable:
-//     // ssize_t SafeSNPrintf(base::span<char>, const char* fmt, Args...);
-//     char str_buffer[100];
-//     SafeSNPrintf(str_buffer, "Pi ~= %lf", 3.14);
-//
-// Spans with "const" and pointers
-// -------------------------------
-//
-// Const and pointers can get confusing. Here are vectors of pointers and their
-// corresponding spans:
-//
-//   const std::vector<int*>        =>  base::span<int* const>
-//   std::vector<const int*>        =>  base::span<const int*>
-//   const std::vector<const int*>  =>  base::span<const int* const>
-//
-// Differences from the C++20 draft
-// --------------------------------
-//
-// http://eel.is/c++draft/views contains the latest C++20 draft of std::span.
-// Chromium tries to follow the draft as close as possible. Differences between
-// the draft and the implementation are documented in subsections below.
-//
-// Differences from [span.objectrep]:
-// - as_bytes() and as_writable_bytes() return spans of uint8_t instead of
-//   std::byte (std::byte is a C++17 feature)
-//
-// Differences from [span.cons]:
-// - Constructing a static span (i.e. Extent != dynamic_extent) from a dynamic
-//   sized container (e.g. std::vector) requires an explicit conversion (in the
-//   C++20 draft this is simply UB)
-//
-// Differences from [span.obs]:
-// - empty() is marked with WARN_UNUSED_RESULT instead of [[nodiscard]]
-//   ([[nodiscard]] is a C++17 feature)
-//
-// Furthermore, all constructors and methods are marked noexcept due to the lack
-// of exceptions in Chromium.
-//
-// Due to the lack of class template argument deduction guides in C++14
-// appropriate make_span() utility functions are provided.
-
-// [span], class template span
-template <typename T, size_t Extent>
-class span : public internal::ExtentStorage<Extent> {
- private:
-  using ExtentStorage = internal::ExtentStorage<Extent>;
-
- public:
-  using element_type = T;
-  using value_type = std::remove_cv_t<T>;
-  using size_type = size_t;
-  using difference_type = ptrdiff_t;
-  using pointer = T*;
-  using reference = T&;
-  using iterator = CheckedContiguousIterator<T>;
-  using const_iterator = CheckedContiguousConstIterator<T>;
-  using reverse_iterator = std::reverse_iterator<iterator>;
-  using const_reverse_iterator = std::reverse_iterator<const_iterator>;
-  static constexpr size_t extent = Extent;
-
-  // [span.cons], span constructors, copy, assignment, and destructor
-  constexpr span() noexcept : ExtentStorage(0), data_(nullptr) {
-    static_assert(Extent == dynamic_extent || Extent == 0, "Invalid Extent");
-  }
-
-  constexpr span(T* data, size_t size) noexcept
-      : ExtentStorage(size), data_(data) {
-    CHECK(Extent == dynamic_extent || Extent == size);
-  }
-
-  // Artificially templatized to break ambiguity for span(ptr, 0).
-  template <typename = void>
-  constexpr span(T* begin, T* end) noexcept : span(begin, end - begin) {
-    // Note: CHECK_LE is not constexpr, hence regular CHECK must be used.
-    CHECK(begin <= end);
-  }
-
-  template <
-      size_t N,
-      typename = internal::EnableIfSpanCompatibleArray<T (&)[N], T, Extent>>
-  constexpr span(T (&array)[N]) noexcept : span(base::data(array), N) {}
-
-  template <
-      size_t N,
-      typename = internal::
-          EnableIfSpanCompatibleArray<std::array<value_type, N>&, T, Extent>>
-  constexpr span(std::array<value_type, N>& array) noexcept
-      : span(base::data(array), N) {}
-
-  template <size_t N,
-            typename = internal::EnableIfSpanCompatibleArray<
-                const std::array<value_type, N>&,
-                T,
-                Extent>>
-  constexpr span(const std::array<value_type, N>& array) noexcept
-      : span(base::data(array), N) {}
-
-  // Conversion from a container that has compatible base::data() and integral
-  // base::size().
-  template <
-      typename Container,
-      typename =
-          internal::EnableIfSpanCompatibleContainerAndSpanIsDynamic<Container&,
-                                                                    T,
-                                                                    Extent>>
-  constexpr span(Container& container) noexcept
-      : span(base::data(container), base::size(container)) {}
-
-  template <
-      typename Container,
-      typename = internal::EnableIfSpanCompatibleContainerAndSpanIsDynamic<
-          const Container&,
-          T,
-          Extent>>
-  constexpr span(const Container& container) noexcept
-      : span(base::data(container), base::size(container)) {}
-
-  constexpr span(const span& other) noexcept = default;
-
-  // Conversions from spans of compatible types and extents: this allows a
-  // span<T> to be seamlessly used as a span<const T>, but not the other way
-  // around. If extent is not dynamic, OtherExtent has to be equal to Extent.
-  template <
-      typename U,
-      size_t OtherExtent,
-      typename =
-          internal::EnableIfLegalSpanConversion<U, OtherExtent, T, Extent>>
-  constexpr span(const span<U, OtherExtent>& other)
-      : span(other.data(), other.size()) {}
-
-  constexpr span& operator=(const span& other) noexcept = default;
-  ~span() noexcept = default;
-
-  // [span.sub], span subviews
-  template <size_t Count>
-  constexpr span<T, Count> first() const noexcept {
-    static_assert(Extent == dynamic_extent || Count <= Extent,
-                  "Count must not exceed Extent");
-    CHECK(Extent != dynamic_extent || Count <= size());
-    return {data(), Count};
-  }
-
-  template <size_t Count>
-  constexpr span<T, Count> last() const noexcept {
-    static_assert(Extent == dynamic_extent || Count <= Extent,
-                  "Count must not exceed Extent");
-    CHECK(Extent != dynamic_extent || Count <= size());
-    return {data() + (size() - Count), Count};
-  }
-
-  template <size_t Offset, size_t Count = dynamic_extent>
-  constexpr span<T,
-                 (Count != dynamic_extent
-                      ? Count
-                      : (Extent != dynamic_extent ? Extent - Offset
-                                                  : dynamic_extent))>
-  subspan() const noexcept {
-    static_assert(Extent == dynamic_extent || Offset <= Extent,
-                  "Offset must not exceed Extent");
-    static_assert(Extent == dynamic_extent || Count == dynamic_extent ||
-                      Count <= Extent - Offset,
-                  "Count must not exceed Extent - Offset");
-    CHECK(Extent != dynamic_extent || Offset <= size());
-    CHECK(Extent != dynamic_extent || Count == dynamic_extent ||
-          Count <= size() - Offset);
-    return {data() + Offset, Count != dynamic_extent ? Count : size() - Offset};
-  }
-
-  constexpr span<T, dynamic_extent> first(size_t count) const noexcept {
-    // Note: CHECK_LE is not constexpr, hence regular CHECK must be used.
-    CHECK(count <= size());
-    return {data(), count};
-  }
-
-  constexpr span<T, dynamic_extent> last(size_t count) const noexcept {
-    // Note: CHECK_LE is not constexpr, hence regular CHECK must be used.
-    CHECK(count <= size());
-    return {data() + (size() - count), count};
-  }
-
-  constexpr span<T, dynamic_extent> subspan(size_t offset,
-                                            size_t count = dynamic_extent) const
-      noexcept {
-    // Note: CHECK_LE is not constexpr, hence regular CHECK must be used.
-    CHECK(offset <= size());
-    CHECK(count == dynamic_extent || count <= size() - offset);
-    return {data() + offset, count != dynamic_extent ? count : size() - offset};
-  }
-
-  // [span.obs], span observers
-  constexpr size_t size() const noexcept { return ExtentStorage::size(); }
-  constexpr size_t size_bytes() const noexcept { return size() * sizeof(T); }
-  constexpr bool empty() const noexcept WARN_UNUSED_RESULT {
-    return size() == 0;
-  }
-
-  // [span.elem], span element access
-  constexpr T& operator[](size_t idx) const noexcept {
-    // Note: CHECK_LT is not constexpr, hence regular CHECK must be used.
-    CHECK(idx < size());
-    return *(data() + idx);
-  }
-
-  constexpr T& front() const noexcept {
-    static_assert(Extent == dynamic_extent || Extent > 0,
-                  "Extent must not be 0");
-    CHECK(Extent != dynamic_extent || !empty());
-    return *data();
-  }
-
-  constexpr T& back() const noexcept {
-    static_assert(Extent == dynamic_extent || Extent > 0,
-                  "Extent must not be 0");
-    CHECK(Extent != dynamic_extent || !empty());
-    return *(data() + size() - 1);
-  }
-
-  constexpr T* data() const noexcept { return data_; }
-
-  // [span.iter], span iterator support
-  constexpr iterator begin() const noexcept {
-    return iterator(data_, data_ + size());
-  }
-  constexpr iterator end() const noexcept {
-    return iterator(data_, data_ + size(), data_ + size());
-  }
-
-  constexpr const_iterator cbegin() const noexcept { return begin(); }
-  constexpr const_iterator cend() const noexcept { return end(); }
-
-  constexpr reverse_iterator rbegin() const noexcept {
-    return reverse_iterator(end());
-  }
-  constexpr reverse_iterator rend() const noexcept {
-    return reverse_iterator(begin());
-  }
-
-  constexpr const_reverse_iterator crbegin() const noexcept {
-    return const_reverse_iterator(cend());
-  }
-  constexpr const_reverse_iterator crend() const noexcept {
-    return const_reverse_iterator(cbegin());
-  }
-
- private:
-  T* data_;
-};
-
-// span<T, Extent>::extent can not be declared inline prior to C++17, hence this
-// definition is required.
-template <class T, size_t Extent>
-constexpr size_t span<T, Extent>::extent;
-
-// [span.objectrep], views of object representation
-template <typename T, size_t X>
-span<const uint8_t, (X == dynamic_extent ? dynamic_extent : sizeof(T) * X)>
-as_bytes(span<T, X> s) noexcept {
-  return {reinterpret_cast<const uint8_t*>(s.data()), s.size_bytes()};
-}
-
-template <typename T,
-          size_t X,
-          typename = std::enable_if_t<!std::is_const<T>::value>>
-span<uint8_t, (X == dynamic_extent ? dynamic_extent : sizeof(T) * X)>
-as_writable_bytes(span<T, X> s) noexcept {
-  return {reinterpret_cast<uint8_t*>(s.data()), s.size_bytes()};
-}
-
-// Type-deducing helpers for constructing a span.
-template <int&... ExplicitArgumentBarrier, typename T>
-constexpr span<T> make_span(T* data, size_t size) noexcept {
-  return {data, size};
-}
-
-template <int&... ExplicitArgumentBarrier, typename T>
-constexpr span<T> make_span(T* begin, T* end) noexcept {
-  return {begin, end};
-}
-
-// make_span utility function that deduces both the span's value_type and extent
-// from the passed in argument.
-//
-// Usage: auto span = base::make_span(...);
-template <int&... ExplicitArgumentBarrier, typename Container>
-constexpr auto make_span(Container&& container) noexcept {
-  using T =
-      std::remove_pointer_t<decltype(base::data(std::declval<Container>()))>;
-  using Extent = internal::Extent<Container>;
-  return span<T, Extent::value>(std::forward<Container>(container));
-}
-
-// make_span utility function that allows callers to explicit specify the span's
-// extent, the value_type is deduced automatically. This is useful when passing
-// a dynamically sized container to a method expecting static spans, when the
-// container is known to have the correct size.
-//
-// Note: This will CHECK that N indeed matches size(container).
-//
-// Usage: auto static_span = base::make_span<N>(...);
-template <size_t N, int&... ExplicitArgumentBarrier, typename Container>
-constexpr auto make_span(Container&& container) noexcept {
-  using T =
-      std::remove_pointer_t<decltype(base::data(std::declval<Container>()))>;
-  return span<T, N>(base::data(container), base::size(container));
-}
-
-}  // namespace base
-
-// Note: std::tuple_size, std::tuple_element and std::get are specialized for
-// static spans, so that they can be used in C++17's structured bindings. While
-// we don't support C++17 yet, there is no harm in providing these
-// specializations already.
-namespace std {
-
-// [span.tuple], tuple interface
-#if defined(__clang__)
-// Due to https://llvm.org/PR39871 and https://llvm.org/PR41331 and their
-// respective fixes different versions of libc++ declare std::tuple_size and
-// std::tuple_element either as classes or structs. In order to be able to
-// specialize std::tuple_size and std::tuple_element for custom base types we
-// thus need to disable -Wmismatched-tags in order to support all build
-// configurations. Note that this is blessed by the standard in
-// https://timsong-cpp.github.io/cppwp/n4140/dcl.type.elab#3.
-#pragma clang diagnostic push
-#pragma clang diagnostic ignored "-Wmismatched-tags"
-#endif
-template <typename T, size_t X>
-struct tuple_size<base::span<T, X>> : public integral_constant<size_t, X> {};
-
-template <typename T>
-struct tuple_size<base::span<T, base::dynamic_extent>>;  // not defined
-
-template <size_t I, typename T, size_t X>
-struct tuple_element<I, base::span<T, X>> {
-  static_assert(
-      base::dynamic_extent != X,
-      "std::tuple_element<> not supported for base::span<T, dynamic_extent>");
-  static_assert(I < X,
-                "Index out of bounds in std::tuple_element<> (base::span)");
-  using type = T;
-};
-#if defined(__clang__)
-#pragma clang diagnostic pop  // -Wmismatched-tags
-#endif
-
-template <size_t I, typename T, size_t X>
-constexpr T& get(base::span<T, X> s) noexcept {
-  static_assert(base::dynamic_extent != X,
-                "std::get<> not supported for base::span<T, dynamic_extent>");
-  static_assert(I < X, "Index out of bounds in std::get<> (base::span)");
-  return s[I];
-}
-
-}  // namespace std
-
-#endif  // BASE_CONTAINERS_SPAN_H_

security/sandbox/chromium/base/cpu.cc

@@ -13,6 +13,7 @@
 #include <utility>
 
 #include "base/stl_util.h"
+#include "build/build_config.h"
 
 #if defined(ARCH_CPU_ARM_FAMILY) && (defined(OS_ANDROID) || defined(OS_LINUX))
 #include "base/files/file_util.h"
@@ -27,44 +28,6 @@
 
 namespace base {
 
-#if defined(ARCH_CPU_X86_FAMILY)
-namespace internal {
-
-std::tuple<int, int, int, int> ComputeX86FamilyAndModel(
-    const std::string& vendor,
-    int signature) {
-  int family = (signature >> 8) & 0xf;
-  int model = (signature >> 4) & 0xf;
-  int ext_family = 0;
-  int ext_model = 0;
-
-  // The "Intel 64 and IA-32 Architectures Developer's Manual: Vol. 2A"
-  // specifies the Extended Model is defined only when the Base Family is
-  // 06h or 0Fh.
-  // The "AMD CPUID Specification" specifies that the Extended Model is
-  // defined only when Base Family is 0Fh.
-  // Both manuals define the display model as
-  // {ExtendedModel[3:0],BaseModel[3:0]} in that case.
-  if (family == 0xf || (family == 0x6 && vendor == "GenuineIntel")) {
-    ext_model = (signature >> 16) & 0xf;
-    model += ext_model << 4;
-  }
-  // Both the "Intel 64 and IA-32 Architectures Developer's Manual: Vol. 2A"
-  // and the "AMD CPUID Specification" specify that the Extended Family is
-  // defined only when the Base Family is 0Fh.
-  // Both manuals define the display family as {0000b,BaseFamily[3:0]} +
-  // ExtendedFamily[7:0] in that case.
-  if (family == 0xf) {
-    ext_family = (signature >> 20) & 0xff;
-    family += ext_family;
-  }
-
-  return {family, model, ext_family, ext_model};
-}
-
-}  // namespace internal
-#endif  // defined(ARCH_CPU_X86_FAMILY)
-
 CPU::CPU()
   : signature_(0),
     type_(0),
@@ -85,7 +48,6 @@ CPU::CPU()
     has_avx2_(false),
     has_aesni_(false),
     has_non_stop_time_stamp_counter_(false),
-    is_running_in_vm_(false),
     cpu_vendor_("unknown") {
   Initialize();
 }
@@ -194,6 +156,7 @@ void CPU::Initialize() {
   memcpy(cpu_string, &cpu_info[1], kVendorNameSize);
   cpu_string[kVendorNameSize] = '\0';
   cpu_vendor_ = cpu_string;
+  bool hypervisor = false;
 
   // Interpret CPU feature information.
   if (num_ids > 0) {
@@ -204,9 +167,11 @@ void CPU::Initialize() {
     }
     signature_ = cpu_info[0];
     stepping_ = cpu_info[0] & 0xf;
+    model_ = ((cpu_info[0] >> 4) & 0xf) + ((cpu_info[0] >> 12) & 0xf0);
+    family_ = (cpu_info[0] >> 8) & 0xf;
     type_ = (cpu_info[0] >> 12) & 0x3;
-    std::tie(family_, model_, ext_family_, ext_model_) =
-        internal::ComputeX86FamilyAndModel(cpu_vendor_, signature_);
+    ext_model_ = (cpu_info[0] >> 16) & 0xf;
+    ext_family_ = (cpu_info[0] >> 20) & 0xff;
     has_mmx_ =   (cpu_info[3] & 0x00800000) != 0;
     has_sse_ =   (cpu_info[3] & 0x02000000) != 0;
     has_sse2_ =  (cpu_info[3] & 0x04000000) != 0;
@@ -221,7 +186,7 @@ void CPU::Initialize() {
     // This is checking for any hypervisor. Hypervisors may choose not to
     // announce themselves. Hypervisors trap CPUID and sometimes return
     // different results to underlying hardware.
-    is_running_in_vm_ = (cpu_info[2] & 0x80000000) != 0;
+    hypervisor = (cpu_info[2] & 0x80000000) != 0;
 
     // AVX instructions will generate an illegal instruction exception unless
     //   a) they are supported by the CPU,
@@ -270,7 +235,7 @@ void CPU::Initialize() {
     has_non_stop_time_stamp_counter_ = (cpu_info[3] & (1 << 8)) != 0;
   }
 
-  if (!has_non_stop_time_stamp_counter_ && is_running_in_vm_) {
+  if (!has_non_stop_time_stamp_counter_ && hypervisor) {
     int cpu_info_hv[4] = {};
     __cpuid(cpu_info_hv, 0x40000000);
     if (cpu_info_hv[1] == 0x7263694D &&  // Micr
@@ -286,14 +251,8 @@ void CPU::Initialize() {
       has_non_stop_time_stamp_counter_ = true;
     }
   }
-#elif defined(ARCH_CPU_ARM_FAMILY)
-#if (defined(OS_ANDROID) || defined(OS_LINUX))
+#elif defined(ARCH_CPU_ARM_FAMILY) && (defined(OS_ANDROID) || defined(OS_LINUX))
   cpu_brand_ = *CpuInfoBrand();
-#elif defined(OS_WIN)
-  // Windows makes high-resolution thread timing information available in
-  // user-space.
-  has_non_stop_time_stamp_counter_ = true;
-#endif
 #endif
 }
 

security/sandbox/chromium/base/cpu.h

@@ -6,25 +6,11 @@
 #define BASE_CPU_H_
 
 #include <string>
-#include <tuple>
 
 #include "base/base_export.h"
-#include "build/build_config.h"
 
 namespace base {
 
-#if defined(ARCH_CPU_X86_FAMILY)
-namespace internal {
-
-// Compute the CPU family and model based on the vendor and CPUID signature.
-// Returns in order: family, model, extended family, extended model.
-BASE_EXPORT std::tuple<int, int, int, int> ComputeX86FamilyAndModel(
-    const std::string& vendor,
-    int signature);
-
-}  // namespace internal
-#endif  // defined(ARCH_CPU_X86_FAMILY)
-
 // Query information about the processor.
 class BASE_EXPORT CPU final {
  public:
@@ -66,7 +52,6 @@ class BASE_EXPORT CPU final {
   bool has_non_stop_time_stamp_counter() const {
     return has_non_stop_time_stamp_counter_;
   }
-  bool is_running_in_vm() const { return is_running_in_vm_; }
 
   IntelMicroArchitecture GetIntelMicroArchitecture() const;
   const std::string& cpu_brand() const { return cpu_brand_; }
@@ -94,7 +79,6 @@ class BASE_EXPORT CPU final {
   bool has_avx2_;
   bool has_aesni_;
   bool has_non_stop_time_stamp_counter_;
-  bool is_running_in_vm_;
   std::string cpu_vendor_;
   std::string cpu_brand_;
 };

security/sandbox/chromium/base/debug/crash_logging.h

@@ -1,104 +0,0 @@
-// Copyright (c) 2012 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#ifndef BASE_DEBUG_CRASH_LOGGING_H_
-#define BASE_DEBUG_CRASH_LOGGING_H_
-
-#include <stddef.h>
-
-#include <memory>
-
-#include "base/base_export.h"
-#include "base/macros.h"
-#include "base/strings/string_piece.h"
-
-namespace base {
-namespace debug {
-
-// A crash key is an annotation that is carried along with a crash report, to
-// provide additional debugging information beyond a stack trace. Crash keys
-// have a name and a string value.
-//
-// The preferred API is //components/crash/core/common:crash_key, however not
-// all clients can hold a direct dependency on that target. The API provided
-// in this file indirects the dependency.
-//
-// Example usage:
-//   static CrashKeyString* crash_key =
-//       AllocateCrashKeyString("name", CrashKeySize::Size32);
-//   SetCrashKeyString(crash_key, "value");
-//   ClearCrashKeyString(crash_key);
-
-// The maximum length for a crash key's value must be one of the following
-// pre-determined values.
-enum class CrashKeySize {
-  Size32 = 32,
-  Size64 = 64,
-  Size256 = 256,
-};
-
-struct CrashKeyString;
-
-// Allocates a new crash key with the specified |name| with storage for a
-// value up to length |size|. This will return null if the crash key system is
-// not initialized.
-BASE_EXPORT CrashKeyString* AllocateCrashKeyString(const char name[],
-                                                   CrashKeySize size);
-
-// Stores |value| into the specified |crash_key|. The |crash_key| may be null
-// if AllocateCrashKeyString() returned null. If |value| is longer than the
-// size with which the key was allocated, it will be truncated.
-BASE_EXPORT void SetCrashKeyString(CrashKeyString* crash_key,
-                                   base::StringPiece value);
-
-// Clears any value that was stored in |crash_key|. The |crash_key| may be
-// null.
-BASE_EXPORT void ClearCrashKeyString(CrashKeyString* crash_key);
-
-// A scoper that sets the specified key to value for the lifetime of the
-// object, and clears it on destruction.
-class BASE_EXPORT ScopedCrashKeyString {
- public:
-  ScopedCrashKeyString(CrashKeyString* crash_key, base::StringPiece value);
-  ~ScopedCrashKeyString();
-
- private:
-  CrashKeyString* const crash_key_;
-
-  DISALLOW_COPY_AND_ASSIGN(ScopedCrashKeyString);
-};
-
-////////////////////////////////////////////////////////////////////////////////
-// The following declarations are used to initialize the crash key system
-// in //base by providing implementations for the above functions.
-
-// The virtual interface that provides the implementation for the crash key
-// API. This is implemented by a higher-layer component, and the instance is
-// set using the function below.
-class CrashKeyImplementation {
- public:
-  virtual ~CrashKeyImplementation() = default;
-
-  virtual CrashKeyString* Allocate(const char name[], CrashKeySize size) = 0;
-  virtual void Set(CrashKeyString* crash_key, base::StringPiece value) = 0;
-  virtual void Clear(CrashKeyString* crash_key) = 0;
-};
-
-// Initializes the crash key system in base by replacing the existing
-// implementation, if it exists, with |impl|. The |impl| is copied into base.
-BASE_EXPORT void SetCrashKeyImplementation(
-    std::unique_ptr<CrashKeyImplementation> impl);
-
-// The base structure for a crash key, storing the allocation metadata.
-struct CrashKeyString {
-  constexpr CrashKeyString(const char name[], CrashKeySize size)
-      : name(name), size(size) {}
-  const char* const name;
-  const CrashKeySize size;
-};
-
-}  // namespace debug
-}  // namespace base
-
-#endif  // BASE_DEBUG_CRASH_LOGGING_H_

security/sandbox/chromium/base/debug/debugger.h

@@ -38,12 +38,6 @@ BASE_EXPORT void BreakDebugger();
 BASE_EXPORT void SetSuppressDebugUI(bool suppress);
 BASE_EXPORT bool IsDebugUISuppressed();
 
-// If a debugger is present, verifies that it is properly set up, and DCHECK()s
-// if misconfigured.  Currently only verifies that //tools/gdb/gdbinit has been
-// sourced when using gdb on Linux and //tools/lldb/lldbinit.py has been sourced
-// when using lldb on macOS.
-BASE_EXPORT void VerifyDebugger();
-
 }  // namespace debug
 }  // namespace base
 

security/sandbox/chromium/base/debug/profiler.cc

@@ -19,23 +19,29 @@
 #endif  // defined(OS_WIN)
 
 // TODO(peria): Enable profiling on Windows.
-#if BUILDFLAG(ENABLE_PROFILING) && BUILDFLAG(USE_TCMALLOC) && !defined(OS_WIN)
+#if BUILDFLAG(ENABLE_PROFILING) && !defined(NO_TCMALLOC) && !defined(OS_WIN)
+
+#if BUILDFLAG(USE_NEW_TCMALLOC)
 #include "third_party/tcmalloc/chromium/src/gperftools/profiler.h"
+#else
+#include "third_party/tcmalloc/gperftools-2.0/chromium/src/gperftools/profiler.h"
+#endif
+
 #endif
 
 namespace base {
 namespace debug {
 
 // TODO(peria): Enable profiling on Windows.
-#if BUILDFLAG(ENABLE_PROFILING) && BUILDFLAG(USE_TCMALLOC) && !defined(OS_WIN)
+#if BUILDFLAG(ENABLE_PROFILING) && !defined(NO_TCMALLOC) && !defined(OS_WIN)
 
 static int profile_count = 0;
 
 void StartProfiling(const std::string& name) {
   ++profile_count;
   std::string full_name(name);
-  std::string pid = NumberToString(GetCurrentProcId());
-  std::string count = NumberToString(profile_count);
+  std::string pid = IntToString(GetCurrentProcId());
+  std::string count = IntToString(profile_count);
   ReplaceSubstringsAfterOffset(&full_name, 0, "{pid}", pid);
   ReplaceSubstringsAfterOffset(&full_name, 0, "{count}", count);
   ProfilerStart(full_name.c_str());
@@ -152,7 +158,7 @@ FunctionType FindFunctionInImports(const char* function_name) {
   base::win::PEImage image(CURRENT_MODULE());
 
   FunctionSearchContext ctx = { function_name, NULL };
-  image.EnumImportChunks(FindResolutionFunctionInImports, &ctx, nullptr);
+  image.EnumImportChunks(FindResolutionFunctionInImports, &ctx);
 
   return reinterpret_cast<FunctionType>(ctx.function);
 }

security/sandbox/chromium/base/environment.cc

@@ -4,6 +4,10 @@
 
 #include "base/environment.h"
 
+#include <stddef.h>
+
+#include <vector>
+
 #include "base/memory/ptr_util.h"
 #include "base/strings/string_piece.h"
 #include "base/strings/string_util.h"
@@ -97,6 +101,23 @@ class EnvironmentImpl : public Environment {
   }
 };
 
+// Parses a null-terminated input string of an environment block. The key is
+// placed into the given string, and the total length of the line, including
+// the terminating null, is returned.
+size_t ParseEnvLine(const NativeEnvironmentString::value_type* input,
+                    NativeEnvironmentString* key) {
+  // Skip to the equals or end of the string, this is the key.
+  size_t cur = 0;
+  while (input[cur] && input[cur] != '=')
+    cur++;
+  *key = NativeEnvironmentString(&input[0], cur);
+
+  // Now just skip to the end of the string.
+  while (input[cur])
+    cur++;
+  return cur + 1;
+}
+
 }  // namespace
 
 namespace env_vars {
@@ -120,4 +141,97 @@ bool Environment::HasVar(StringPiece variable_name) {
   return GetVar(variable_name, nullptr);
 }
 
+#if defined(OS_WIN)
+
+string16 AlterEnvironment(const wchar_t* env,
+                          const EnvironmentMap& changes) {
+  string16 result;
+
+  // First copy all unmodified values to the output.
+  size_t cur_env = 0;
+  string16 key;
+  while (env[cur_env]) {
+    const wchar_t* line = &env[cur_env];
+    size_t line_length = ParseEnvLine(line, &key);
+
+    // Keep only values not specified in the change vector.
+    EnvironmentMap::const_iterator found_change = changes.find(key);
+    if (found_change == changes.end())
+      result.append(line, line_length);
+
+    cur_env += line_length;
+  }
+
+  // Now append all modified and new values.
+  for (EnvironmentMap::const_iterator i = changes.begin();
+       i != changes.end(); ++i) {
+    if (!i->second.empty()) {
+      result.append(i->first);
+      result.push_back('=');
+      result.append(i->second);
+      result.push_back(0);
+    }
+  }
+
+  // An additional null marks the end of the list. We always need a double-null
+  // in case nothing was added above.
+  if (result.empty())
+    result.push_back(0);
+  result.push_back(0);
+  return result;
+}
+
+#elif defined(OS_POSIX) || defined(OS_FUCHSIA)
+
+std::unique_ptr<char* []> AlterEnvironment(const char* const* const env,
+                                           const EnvironmentMap& changes) {
+  std::string value_storage;  // Holds concatenated null-terminated strings.
+  std::vector<size_t> result_indices;  // Line indices into value_storage.
+
+  // First build up all of the unchanged environment strings. These are
+  // null-terminated of the form "key=value".
+  std::string key;
+  for (size_t i = 0; env[i]; i++) {
+    size_t line_length = ParseEnvLine(env[i], &key);
+
+    // Keep only values not specified in the change vector.
+    auto found_change = changes.find(key);
+    if (found_change == changes.end()) {
+      result_indices.push_back(value_storage.size());
+      value_storage.append(env[i], line_length);
+    }
+  }
+
+  // Now append all modified and new values.
+  for (const auto& i : changes) {
+    if (!i.second.empty()) {
+      result_indices.push_back(value_storage.size());
+      value_storage.append(i.first);
+      value_storage.push_back('=');
+      value_storage.append(i.second);
+      value_storage.push_back(0);
+    }
+  }
+
+  size_t pointer_count_required =
+      result_indices.size() + 1 +  // Null-terminated array of pointers.
+      (value_storage.size() + sizeof(char*) - 1) / sizeof(char*);  // Buffer.
+  std::unique_ptr<char* []> result(new char*[pointer_count_required]);
+
+  // The string storage goes after the array of pointers.
+  char* storage_data = reinterpret_cast<char*>(
+      &result.get()[result_indices.size() + 1]);
+  if (!value_storage.empty())
+    memcpy(storage_data, value_storage.data(), value_storage.size());
+
+  // Fill array of pointers at the beginning of the result.
+  for (size_t i = 0; i < result_indices.size(); i++)
+    result[i] = &storage_data[result_indices[i]];
+  result[result_indices.size()] = 0;  // Null terminator.
+
+  return result;
+}
+
+#endif  // OS_POSIX || OS_FUCHSIA
+
 }  // namespace base

security/sandbox/chromium/base/environment.h

@@ -38,23 +38,52 @@ class BASE_EXPORT Environment {
   // Syntactic sugar for GetVar(variable_name, nullptr);
   virtual bool HasVar(StringPiece variable_name);
 
-  // Returns true on success, otherwise returns false. This method should not
-  // be called in a multi-threaded process.
+  // Returns true on success, otherwise returns false.
   virtual bool SetVar(StringPiece variable_name,
                       const std::string& new_value) = 0;
 
-  // Returns true on success, otherwise returns false. This method should not
-  // be called in a multi-threaded process.
+  // Returns true on success, otherwise returns false.
   virtual bool UnSetVar(StringPiece variable_name) = 0;
 };
 
+
 #if defined(OS_WIN)
-using NativeEnvironmentString = std::wstring;
+
+typedef string16 NativeEnvironmentString;
+typedef std::map<NativeEnvironmentString, NativeEnvironmentString>
+    EnvironmentMap;
+
+// Returns a modified environment vector constructed from the given environment
+// and the list of changes given in |changes|. Each key in the environment is
+// matched against the first element of the pairs. In the event of a match, the
+// value is replaced by the second of the pair, unless the second is empty, in
+// which case the key-value is removed.
+//
+// This Windows version takes and returns a Windows-style environment block
+// which is a concatenated list of null-terminated 16-bit strings. The end is
+// marked by a double-null terminator. The size of the returned string will
+// include the terminators.
+BASE_EXPORT string16 AlterEnvironment(const wchar_t* env,
+                                      const EnvironmentMap& changes);
+
 #elif defined(OS_POSIX) || defined(OS_FUCHSIA)
-using NativeEnvironmentString = std::string;
+
+typedef std::string NativeEnvironmentString;
+typedef std::map<NativeEnvironmentString, NativeEnvironmentString>
+    EnvironmentMap;
+
+// See general comments for the Windows version above.
+//
+// This Posix version takes and returns a Posix-style environment block, which
+// is a null-terminated list of pointers to null-terminated strings. The
+// returned array will have appended to it the storage for the array itself so
+// there is only one pointer to manage, but this means that you can't copy the
+// array without keeping the original around.
+BASE_EXPORT std::unique_ptr<char* []> AlterEnvironment(
+    const char* const* env,
+    const EnvironmentMap& changes);
+
 #endif
-using EnvironmentMap =
-    std::map<NativeEnvironmentString, NativeEnvironmentString>;
 
 }  // namespace base
 

security/sandbox/chromium/base/files/file_path.h

@@ -104,7 +104,6 @@
 
 #include <stddef.h>
 
-#include <functional>
 #include <iosfwd>
 #include <string>
 #include <vector>
@@ -153,7 +152,7 @@ class BASE_EXPORT FilePath {
 #if defined(OS_WIN)
   // On Windows, for Unicode-aware applications, native pathnames are wchar_t
   // arrays encoded in UTF-16.
-  typedef std::wstring StringType;
+  typedef base::string16 StringType;
 #elif defined(OS_POSIX) || defined(OS_FUCHSIA)
   // On most platforms, native pathnames are char arrays, and the encoding
   // may or may not be specified.  On Mac OS X, native pathnames are encoded

security/sandbox/chromium/base/files/file_path_constants.cc

@@ -1,25 +0,0 @@
-// Copyright 2013 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#include <stddef.h>
-
-#include "base/files/file_path.h"
-#include "base/stl_util.h"
-
-namespace base {
-
-#if defined(FILE_PATH_USES_WIN_SEPARATORS)
-const FilePath::CharType FilePath::kSeparators[] = FILE_PATH_LITERAL("\\/");
-#else  // FILE_PATH_USES_WIN_SEPARATORS
-const FilePath::CharType FilePath::kSeparators[] = FILE_PATH_LITERAL("/");
-#endif  // FILE_PATH_USES_WIN_SEPARATORS
-
-const size_t FilePath::kSeparatorsLength = base::size(kSeparators);
-
-const FilePath::CharType FilePath::kCurrentDirectory[] = FILE_PATH_LITERAL(".");
-const FilePath::CharType FilePath::kParentDirectory[] = FILE_PATH_LITERAL("..");
-
-const FilePath::CharType FilePath::kExtensionSeparator = FILE_PATH_LITERAL('.');
-
-}  // namespace base

security/sandbox/chromium/base/hash.cc

@@ -2,11 +2,7 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#include "base/hash/hash.h"
-
-#include "base/rand_util.h"
-#include "base/third_party/cityhash/city.h"
-#include "build/build_config.h"
+#include "base/hash.h"
 
 // Definition in base/third_party/superfasthash/superfasthash.c. (Third-party
 // code did not come with its own header file, so declaring the function here.)
@@ -15,18 +11,34 @@ extern "C" uint32_t SuperFastHash(const char* data, int len);
 
 namespace base {
 
-namespace {
+uint32_t Hash(const void* data, size_t length) {
+  // Currently our in-memory hash is the same as the persistent hash. The
+  // split between in-memory and persistent hash functions is maintained to
+  // allow the in-memory hash function to be updated in the future.
+  return PersistentHash(data, length);
+}
 
-size_t FastHashImpl(base::span<const uint8_t> data) {
-  // We use the updated CityHash within our namespace (not the deprecated
-  // version from third_party/smhasher).
-#if defined(ARCH_CPU_64_BITS)
-  return base::internal::cityhash_v111::CityHash64(
-      reinterpret_cast<const char*>(data.data()), data.size());
-#else
-  return base::internal::cityhash_v111::CityHash32(
-      reinterpret_cast<const char*>(data.data()), data.size());
-#endif
+uint32_t Hash(const std::string& str) {
+  return PersistentHash(str.data(), str.size());
+}
+
+uint32_t Hash(const string16& str) {
+  return PersistentHash(str.data(), str.size() * sizeof(char16));
+}
+
+uint32_t PersistentHash(const void* data, size_t length) {
+  // This hash function must not change, since it is designed to be persistable
+  // to disk.
+  if (length > static_cast<size_t>(std::numeric_limits<int>::max())) {
+    NOTREACHED();
+    return 0;
+  }
+  return ::SuperFastHash(reinterpret_cast<const char*>(data),
+                         static_cast<int>(length));
+}
+
+uint32_t PersistentHash(const std::string& str) {
+  return PersistentHash(str.data(), str.size());
 }
 
 // Implement hashing for pairs of at-most 32 bit integer values.
@@ -38,7 +50,7 @@ size_t FastHashImpl(base::span<const uint8_t> data) {
 //   h32(x32, y32) = (h64(x32, y32) * rand_odd64 + rand16 * 2^16) % 2^64 / 2^32
 //
 // Contact danakj@chromium.org for any questions.
-size_t HashInts32Impl(uint32_t value1, uint32_t value2) {
+size_t HashInts32(uint32_t value1, uint32_t value2) {
   uint64_t value1_64 = value1;
   uint64_t hash64 = (value1_64 << 32) | value2;
 
@@ -59,7 +71,7 @@ size_t HashInts32Impl(uint32_t value1, uint32_t value2) {
 // breaking the two 64-bit inputs into 4 32-bit values:
 // http://opendatastructures.org/versions/edition-0.1d/ods-java/node33.html#SECTION00832000000000000000
 // Then we reduce our result to 32 bits if required, similar to above.
-size_t HashInts64Impl(uint64_t value1, uint64_t value2) {
+size_t HashInts64(uint64_t value1, uint64_t value2) {
   uint32_t short_random1 = 842304669U;
   uint32_t short_random2 = 619063811U;
   uint32_t short_random3 = 937041849U;
@@ -89,79 +101,4 @@ size_t HashInts64Impl(uint64_t value1, uint64_t value2) {
   return high_bits;
 }
 
-// The random seed is used to perturb the output of base::FastHash() and
-// base::HashInts() so that it is only deterministic within the lifetime of a
-// process. This prevents inadvertent dependencies on the underlying
-// implementation, e.g. anything that persists the hash value and expects it to
-// be unchanging will break.
-//
-// Note: this is the same trick absl uses to generate a random seed. This is
-// more robust than using base::RandBytes(), which can fail inside a sandboxed
-// environment. Note that without ASLR, the seed won't be quite as random...
-#if DCHECK_IS_ON()
-constexpr const void* kSeed = &kSeed;
-#endif
-
-template <typename T>
-T Scramble(T input) {
-#if DCHECK_IS_ON()
-  return HashInts64Impl(input, reinterpret_cast<uintptr_t>(kSeed));
-#else
-  return input;
-#endif
-}
-
-}  // namespace
-
-size_t FastHash(base::span<const uint8_t> data) {
-  return Scramble(FastHashImpl(data));
-}
-
-uint32_t Hash(const void* data, size_t length) {
-  // Currently our in-memory hash is the same as the persistent hash. The
-  // split between in-memory and persistent hash functions is maintained to
-  // allow the in-memory hash function to be updated in the future.
-  return PersistentHash(data, length);
-}
-
-uint32_t Hash(const std::string& str) {
-  return PersistentHash(as_bytes(make_span(str)));
-}
-
-uint32_t Hash(const string16& str) {
-  return PersistentHash(as_bytes(make_span(str)));
-}
-
-uint32_t PersistentHash(span<const uint8_t> data) {
-  // This hash function must not change, since it is designed to be persistable
-  // to disk.
-  if (data.size() > static_cast<size_t>(std::numeric_limits<int>::max())) {
-    NOTREACHED();
-    return 0;
-  }
-  return ::SuperFastHash(reinterpret_cast<const char*>(data.data()),
-                         static_cast<int>(data.size()));
-}
-
-uint32_t PersistentHash(const void* data, size_t length) {
-  return PersistentHash(make_span(static_cast<const uint8_t*>(data), length));
-}
-
-uint32_t PersistentHash(const std::string& str) {
-  return PersistentHash(str.data(), str.size());
-}
-
-size_t HashInts32(uint32_t value1, uint32_t value2) {
-  return Scramble(HashInts32Impl(value1, value2));
-}
-
-// Implement hashing for pairs of up-to 64-bit integer values.
-// We use the compound integer hash method to produce a 64-bit hash code, by
-// breaking the two 64-bit inputs into 4 32-bit values:
-// http://opendatastructures.org/versions/edition-0.1d/ods-java/node33.html#SECTION00832000000000000000
-// Then we reduce our result to 32 bits if required, similar to above.
-size_t HashInts64(uint64_t value1, uint64_t value2) {
-  return Scramble(HashInts64Impl(value1, value2));
-}
-
 }  // namespace base

security/sandbox/chromium/base/hash.h

@@ -2,8 +2,8 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#ifndef BASE_HASH_HASH_H_
-#define BASE_HASH_HASH_H_
+#ifndef BASE_HASH_H_
+#define BASE_HASH_H_
 
 #include <stddef.h>
 #include <stdint.h>
@@ -13,42 +13,26 @@
 #include <utility>
 
 #include "base/base_export.h"
-#include "base/containers/span.h"
 #include "base/logging.h"
 #include "base/strings/string16.h"
-#include "base/strings/string_piece.h"
 
 namespace base {
 
-// WARNING: This hash functions should not be used for any cryptographic
-// purpose.
-
-// Deprecated: Computes a hash of a memory buffer, use FastHash() instead.
-// If you need to persist a change on disk or between computers, use
-// PersistentHash().
-// TODO(https://crbug.com/1025358): Migrate client code to new hash function.
+// Computes a hash of a memory buffer. This hash function is subject to change
+// in the future, so use only for temporary in-memory structures. If you need
+// to persist a change on disk or between computers, use PersistentHash().
+//
+// WARNING: This hash function should not be used for any cryptographic purpose.
 BASE_EXPORT uint32_t Hash(const void* data, size_t length);
 BASE_EXPORT uint32_t Hash(const std::string& str);
 BASE_EXPORT uint32_t Hash(const string16& str);
 
-// Really *fast* and high quality hash.
-// Recommended hash function for general use, we pick the best performant
-// hash for each build target.
-// It is prone to be updated whenever a newer/faster hash function is
-// publicly available.
-// May changed without warning, do not expect stability of outputs.
-BASE_EXPORT size_t FastHash(base::span<const uint8_t> data);
-inline size_t FastHash(StringPiece str) {
-  return FastHash(as_bytes(make_span(str)));
-}
-
 // Computes a hash of a memory buffer. This hash function must not change so
 // that code can use the hashed values for persistent storage purposes or
 // sending across the network. If a new persistent hash function is desired, a
 // new version will have to be added in addition.
 //
 // WARNING: This hash function should not be used for any cryptographic purpose.
-BASE_EXPORT uint32_t PersistentHash(base::span<const uint8_t> data);
 BASE_EXPORT uint32_t PersistentHash(const void* data, size_t length);
 BASE_EXPORT uint32_t PersistentHash(const std::string& str);
 
@@ -83,4 +67,4 @@ struct IntPairHash<std::pair<Type1, Type2>> {
 
 }  // namespace base
 
-#endif  // BASE_HASH_HASH_H_
+#endif  // BASE_HASH_H_

security/sandbox/chromium/base/immediate_crash.h

@@ -1,168 +0,0 @@
-// Copyright 2019 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#ifndef BASE_IMMEDIATE_CRASH_H_
-#define BASE_IMMEDIATE_CRASH_H_
-
-#include "build/build_config.h"
-
-// Crashes in the fastest possible way with no attempt at logging.
-// There are several constraints; see http://crbug.com/664209 for more context.
-//
-// - TRAP_SEQUENCE_() must be fatal. It should not be possible to ignore the
-//   resulting exception or simply hit 'continue' to skip over it in a debugger.
-// - Different instances of TRAP_SEQUENCE_() must not be folded together, to
-//   ensure crash reports are debuggable. Unlike __builtin_trap(), asm volatile
-//   blocks will not be folded together.
-//   Note: TRAP_SEQUENCE_() previously required an instruction with a unique
-//   nonce since unlike clang, GCC folds together identical asm volatile
-//   blocks.
-// - TRAP_SEQUENCE_() must produce a signal that is distinct from an invalid
-//   memory access.
-// - TRAP_SEQUENCE_() must be treated as a set of noreturn instructions.
-//   __builtin_unreachable() is used to provide that hint here. clang also uses
-//   this as a heuristic to pack the instructions in the function epilogue to
-//   improve code density.
-//
-// Additional properties that are nice to have:
-// - TRAP_SEQUENCE_() should be as compact as possible.
-// - The first instruction of TRAP_SEQUENCE_() should not change, to avoid
-//   shifting crash reporting clusters. As a consequence of this, explicit
-//   assembly is preferred over intrinsics.
-//   Note: this last bullet point may no longer be true, and may be removed in
-//   the future.
-
-// Note: TRAP_SEQUENCE Is currently split into two macro helpers due to the fact
-// that clang emits an actual instruction for __builtin_unreachable() on certain
-// platforms (see https://crbug.com/958675). In addition, the int3/bkpt/brk will
-// be removed in followups, so splitting it up like this now makes it easy to
-// land the followups.
-
-#if defined(COMPILER_GCC)
-
-#if defined(OS_NACL)
-
-// Crash report accuracy is not guaranteed on NaCl.
-#define TRAP_SEQUENCE1_() __builtin_trap()
-#define TRAP_SEQUENCE2_() asm volatile("")
-
-#elif defined(ARCH_CPU_X86_FAMILY)
-
-// TODO(https://crbug.com/958675): In theory, it should be possible to use just
-// int3. However, there are a number of crashes with SIGILL as the exception
-// code, so it seems likely that there's a signal handler that allows execution
-// to continue after SIGTRAP.
-#define TRAP_SEQUENCE1_() asm volatile("int3")
-
-#if defined(OS_MACOSX)
-// Intentionally empty: __builtin_unreachable() is always part of the sequence
-// (see IMMEDIATE_CRASH below) and already emits a ud2 on Mac.
-#define TRAP_SEQUENCE2_() asm volatile("")
-#else
-#define TRAP_SEQUENCE2_() asm volatile("ud2")
-#endif  // defined(OS_MACOSX)
-
-#elif defined(ARCH_CPU_ARMEL)
-
-// bkpt will generate a SIGBUS when running on armv7 and a SIGTRAP when running
-// as a 32 bit userspace app on arm64. There doesn't seem to be any way to
-// cause a SIGTRAP from userspace without using a syscall (which would be a
-// problem for sandboxing).
-// TODO(https://crbug.com/958675): Remove bkpt from this sequence.
-#define TRAP_SEQUENCE1_() asm volatile("bkpt #0")
-#define TRAP_SEQUENCE2_() asm volatile("udf #0")
-
-#elif defined(ARCH_CPU_ARM64)
-
-// This will always generate a SIGTRAP on arm64.
-// TODO(https://crbug.com/958675): Remove brk from this sequence.
-#define TRAP_SEQUENCE1_() asm volatile("brk #0")
-#define TRAP_SEQUENCE2_() asm volatile("hlt #0")
-
-#else
-
-// Crash report accuracy will not be guaranteed on other architectures, but at
-// least this will crash as expected.
-#define TRAP_SEQUENCE1_() __builtin_trap()
-#define TRAP_SEQUENCE2_() asm volatile("")
-
-#endif  // ARCH_CPU_*
-
-#elif defined(COMPILER_MSVC)
-
-#if !defined(__clang__)
-
-// MSVC x64 doesn't support inline asm, so use the MSVC intrinsic.
-#define TRAP_SEQUENCE1_() __debugbreak()
-#define TRAP_SEQUENCE2_()
-
-#elif defined(ARCH_CPU_ARM64)
-
-// Windows ARM64 uses "BRK #F000" as its breakpoint instruction, and
-// __debugbreak() generates that in both VC++ and clang.
-#define TRAP_SEQUENCE1_() __debugbreak()
-// Intentionally empty: __builtin_unreachable() is always part of the sequence
-// (see IMMEDIATE_CRASH below) and already emits a ud2 on Win64,
-// https://crbug.com/958373
-#define TRAP_SEQUENCE2_() __asm volatile("")
-
-#else
-
-#define TRAP_SEQUENCE1_() asm volatile("int3")
-#define TRAP_SEQUENCE2_() asm volatile("ud2")
-
-#endif  // __clang__
-
-#else
-
-#error No supported trap sequence!
-
-#endif  // COMPILER_GCC
-
-#define TRAP_SEQUENCE_() \
-  do {                   \
-    TRAP_SEQUENCE1_();   \
-    TRAP_SEQUENCE2_();   \
-  } while (false)
-
-// CHECK() and the trap sequence can be invoked from a constexpr function.
-// This could make compilation fail on GCC, as it forbids directly using inline
-// asm inside a constexpr function. However, it allows calling a lambda
-// expression including the same asm.
-// The side effect is that the top of the stacktrace will not point to the
-// calling function, but to this anonymous lambda. This is still useful as the
-// full name of the lambda will typically include the name of the function that
-// calls CHECK() and the debugger will still break at the right line of code.
-#if !defined(COMPILER_GCC)
-
-#define WRAPPED_TRAP_SEQUENCE_() TRAP_SEQUENCE_()
-
-#else
-
-#define WRAPPED_TRAP_SEQUENCE_() \
-  do {                           \
-    [] { TRAP_SEQUENCE_(); }();  \
-  } while (false)
-
-#endif  // !defined(COMPILER_GCC)
-
-#if defined(__clang__) || defined(COMPILER_GCC)
-
-// __builtin_unreachable() hints to the compiler that this is noreturn and can
-// be packed in the function epilogue.
-#define IMMEDIATE_CRASH()     \
-  ({                          \
-    WRAPPED_TRAP_SEQUENCE_(); \
-    __builtin_unreachable();  \
-  })
-
-#else
-
-// This is supporting non-chromium user of logging.h to build with MSVC, like
-// pdfium. On MSVC there is no __builtin_unreachable().
-#define IMMEDIATE_CRASH() WRAPPED_TRAP_SEQUENCE_()
-
-#endif  // defined(__clang__) || defined(COMPILER_GCC)
-
-#endif  // BASE_IMMEDIATE_CRASH_H_

security/sandbox/chromium/base/location.cc

@@ -43,7 +43,7 @@ Location::Location(const char* function_name,
 std::string Location::ToString() const {
   if (has_source_info()) {
     return std::string(function_name_) + "@" + file_name_ + ":" +
-           NumberToString(line_number_);
+           IntToString(line_number_);
   }
   return StringPrintf("pc:%p", program_counter_);
 }
@@ -69,25 +69,6 @@ NOINLINE Location Location::CreateFromHere(const char* function_name,
   return Location(function_name, file_name, line_number, RETURN_ADDRESS());
 }
 
-#if SUPPORTS_LOCATION_BUILTINS && BUILDFLAG(ENABLE_LOCATION_SOURCE)
-// static
-NOINLINE Location Location::Current(const char* function_name,
-                                    const char* file_name,
-                                    int line_number) {
-  return Location(function_name, file_name, line_number, RETURN_ADDRESS());
-}
-#elif SUPPORTS_LOCATION_BUILTINS
-// static
-NOINLINE Location Location::Current(const char* file_name) {
-  return Location(file_name, RETURN_ADDRESS());
-}
-#else
-// static
-NOINLINE Location Location::Current() {
-  return Location(nullptr, RETURN_ADDRESS());
-}
-#endif
-
 //------------------------------------------------------------------------------
 NOINLINE const void* GetProgramCounter() {
   return RETURN_ADDRESS();

security/sandbox/chromium/base/location.h

@@ -8,29 +8,14 @@
 #include <stddef.h>
 
 #include <cassert>
-#include <functional>
 #include <string>
 
 #include "base/base_export.h"
 #include "base/debug/debugging_buildflags.h"
-#include "base/hash/hash.h"
-#include "build/build_config.h"
+#include "base/hash.h"
 
 namespace base {
 
-#if defined(__has_builtin)
-// Clang allows detection of these builtins.
-#define SUPPORTS_LOCATION_BUILTINS                                       \
-  (__has_builtin(__builtin_FUNCTION) && __has_builtin(__builtin_FILE) && \
-   __has_builtin(__builtin_LINE))
-#elif defined(COMPILER_GCC) && __GNUC__ >= 7
-// GCC has supported these for a long time, but they point at the function
-// declaration in the case of default arguments, rather than at the call site.
-#define SUPPORTS_LOCATION_BUILTINS 1
-#else
-#define SUPPORTS_LOCATION_BUILTINS 0
-#endif
-
 // Location provides basic info where of an object was constructed, or was
 // significantly brought to life.
 class BASE_EXPORT Location {
@@ -88,16 +73,6 @@ class BASE_EXPORT Location {
                                  const char* file_name,
                                  int line_number);
 
-#if SUPPORTS_LOCATION_BUILTINS && BUILDFLAG(ENABLE_LOCATION_SOURCE)
-  static Location Current(const char* function_name = __builtin_FUNCTION(),
-                          const char* file_name = __builtin_FILE(),
-                          int line_number = __builtin_LINE());
-#elif SUPPORTS_LOCATION_BUILTINS
-  static Location Current(const char* file_name = __builtin_FILE());
-#else
-  static Location Current();
-#endif
-
  private:
   const char* function_name_ = nullptr;
   const char* file_name_ = nullptr;
@@ -133,7 +108,7 @@ template <>
 struct hash<::base::Location> {
   std::size_t operator()(const ::base::Location& loc) const {
     const void* program_counter = loc.program_counter();
-    return base::FastHash(base::as_bytes(base::make_span(&program_counter, 1)));
+    return base::Hash(&program_counter, sizeof(void*));
   }
 };
 

security/sandbox/chromium/base/logging.h

@@ -8,7 +8,6 @@
 #include <stddef.h>
 
 #include <cassert>
-#include <cstdint>
 #include <cstring>
 #include <sstream>
 #include <string>
@@ -18,18 +17,13 @@
 #include "base/base_export.h"
 #include "base/callback_forward.h"
 #include "base/compiler_specific.h"
-#include "base/immediate_crash.h"
-#include "base/logging_buildflags.h"
+#include "base/debug/debugger.h"
 #include "base/macros.h"
 #include "base/scoped_clear_last_error.h"
 #include "base/strings/string_piece_forward.h"
 #include "base/template_util.h"
 #include "build/build_config.h"
 
-#if defined(OS_CHROMEOS)
-#include <cstdio>
-#endif
-
 //
 // Optional message capabilities
 // -----------------------------
@@ -168,35 +162,27 @@ namespace logging {
 
 // TODO(avi): do we want to do a unification of character types here?
 #if defined(OS_WIN)
-typedef wchar_t PathChar;
+typedef base::char16 PathChar;
 #elif defined(OS_POSIX) || defined(OS_FUCHSIA)
 typedef char PathChar;
 #endif
 
-// A bitmask of potential logging destinations.
-using LoggingDestination = uint32_t;
-// Specifies where logs will be written. Multiple destinations can be specified
-// with bitwise OR.
-// Unless destination is LOG_NONE, all logs with severity ERROR and above will
-// be written to stderr in addition to the specified destination.
-enum : uint32_t {
+// Where to record logging output? A flat file and/or system debug log
+// via OutputDebugString.
+enum LoggingDestination {
   LOG_NONE                = 0,
   LOG_TO_FILE             = 1 << 0,
   LOG_TO_SYSTEM_DEBUG_LOG = 1 << 1,
-  LOG_TO_STDERR           = 1 << 2,
 
-  LOG_TO_ALL = LOG_TO_FILE | LOG_TO_SYSTEM_DEBUG_LOG | LOG_TO_STDERR,
+  LOG_TO_ALL = LOG_TO_FILE | LOG_TO_SYSTEM_DEBUG_LOG,
 
-// On Windows, use a file next to the exe.
-// On POSIX platforms, where it may not even be possible to locate the
-// executable on disk, use stderr.
-// On Fuchsia, use the Fuchsia logging service.
-#if defined(OS_FUCHSIA) || defined(OS_NACL)
-  LOG_DEFAULT = LOG_TO_SYSTEM_DEBUG_LOG,
-#elif defined(OS_WIN)
+  // On Windows, use a file next to the exe; on POSIX platforms, where
+  // it may not even be possible to locate the executable on disk, use
+  // stderr.
+#if defined(OS_WIN)
   LOG_DEFAULT = LOG_TO_FILE,
-#elif defined(OS_POSIX)
-  LOG_DEFAULT = LOG_TO_SYSTEM_DEBUG_LOG | LOG_TO_STDERR,
+#elif defined(OS_POSIX) || defined(OS_FUCHSIA)
+  LOG_DEFAULT = LOG_TO_SYSTEM_DEBUG_LOG,
 #endif
 };
 
@@ -214,22 +200,21 @@ enum LogLockingState { LOCK_LOG_FILE, DONT_LOCK_LOG_FILE };
 enum OldFileDeletionState { DELETE_OLD_LOG_FILE, APPEND_TO_OLD_LOG_FILE };
 
 struct BASE_EXPORT LoggingSettings {
-  // Equivalent to logging destination enum, but allows for multiple
-  // destinations.
-  uint32_t logging_dest = LOG_DEFAULT;
+  // The defaults values are:
+  //
+  //  logging_dest: LOG_DEFAULT
+  //  log_file:     NULL
+  //  lock_log:     LOCK_LOG_FILE
+  //  delete_old:   APPEND_TO_OLD_LOG_FILE
+  LoggingSettings();
 
-  // The four settings below have an effect only when LOG_TO_FILE is
+  LoggingDestination logging_dest;
+
+  // The three settings below have an effect only when LOG_TO_FILE is
   // set in |logging_dest|.
-  const PathChar* log_file_path = nullptr;
-  LogLockingState lock_log = LOCK_LOG_FILE;
-  OldFileDeletionState delete_old = APPEND_TO_OLD_LOG_FILE;
-#if defined(OS_CHROMEOS)
-  // Contains an optional file that logs should be written to. If present,
-  // |log_file_path| will be ignored, and the logging system will take ownership
-  // of the FILE. If there's an error writing to this file, no fallback paths
-  // will be opened.
-  FILE* log_file = nullptr;
-#endif
+  const PathChar* log_file;
+  LogLockingState lock_log;
+  OldFileDeletionState delete_old;
 };
 
 // Define different names for the BaseInitLoggingImpl() function depending on
@@ -315,10 +300,10 @@ BASE_EXPORT void SetShowErrorDialogs(bool enable_dialogs);
 // however clients can use this function to override with their own handling
 // (e.g. a silent one for Unit Tests)
 using LogAssertHandlerFunction =
-    base::RepeatingCallback<void(const char* file,
-                                 int line,
-                                 const base::StringPiece message,
-                                 const base::StringPiece stack_trace)>;
+    base::Callback<void(const char* file,
+                        int line,
+                        const base::StringPiece message,
+                        const base::StringPiece stack_trace)>;
 
 class BASE_EXPORT ScopedLogAssertHandler {
  public:
@@ -530,9 +515,9 @@ BASE_EXPORT extern std::ostream* g_swallow_stream;
 class CheckOpResult {
  public:
   // |message| must be non-null if and only if the check failed.
-  constexpr CheckOpResult(std::string* message) : message_(message) {}
+  CheckOpResult(std::string* message) : message_(message) {}
   // Returns true if the check succeeded.
-  constexpr operator bool() const { return !message_; }
+  operator bool() const { return !message_; }
   // Returns the message.
   std::string* message() { return message_; }
 
@@ -540,6 +525,110 @@ class CheckOpResult {
   std::string* message_;
 };
 
+// Crashes in the fastest possible way with no attempt at logging.
+// There are different constraints to satisfy here, see http://crbug.com/664209
+// for more context:
+// - The trap instructions, and hence the PC value at crash time, have to be
+//   distinct and not get folded into the same opcode by the compiler.
+//   On Linux/Android this is tricky because GCC still folds identical
+//   asm volatile blocks. The workaround is generating distinct opcodes for
+//   each CHECK using the __COUNTER__ macro.
+// - The debug info for the trap instruction has to be attributed to the source
+//   line that has the CHECK(), to make crash reports actionable. This rules
+//   out the ability of using a inline function, at least as long as clang
+//   doesn't support attribute(artificial).
+// - Failed CHECKs should produce a signal that is distinguishable from an
+//   invalid memory access, to improve the actionability of crash reports.
+// - The compiler should treat the CHECK as no-return instructions, so that the
+//   trap code can be efficiently packed in the prologue of the function and
+//   doesn't interfere with the main execution flow.
+// - When debugging, developers shouldn't be able to accidentally step over a
+//   CHECK. This is achieved by putting opcodes that will cause a non
+//   continuable exception after the actual trap instruction.
+// - Don't cause too much binary bloat.
+#if defined(COMPILER_GCC)
+
+#if defined(ARCH_CPU_X86_FAMILY) && !defined(OS_NACL)
+// int 3 will generate a SIGTRAP.
+#define TRAP_SEQUENCE() \
+  asm volatile(         \
+      "int3; ud2; push %0;" ::"i"(static_cast<unsigned char>(__COUNTER__)))
+
+#elif defined(ARCH_CPU_ARMEL) && !defined(OS_NACL)
+// bkpt will generate a SIGBUS when running on armv7 and a SIGTRAP when running
+// as a 32 bit userspace app on arm64. There doesn't seem to be any way to
+// cause a SIGTRAP from userspace without using a syscall (which would be a
+// problem for sandboxing).
+#define TRAP_SEQUENCE() \
+  asm volatile("bkpt #0; udf %0;" ::"i"(__COUNTER__ % 256))
+
+#elif defined(ARCH_CPU_ARM64) && !defined(OS_NACL)
+// This will always generate a SIGTRAP on arm64.
+#define TRAP_SEQUENCE() \
+  asm volatile("brk #0; hlt %0;" ::"i"(__COUNTER__ % 65536))
+
+#else
+// Crash report accuracy will not be guaranteed on other architectures, but at
+// least this will crash as expected.
+#define TRAP_SEQUENCE() __builtin_trap()
+#endif  // ARCH_CPU_*
+
+#elif defined(COMPILER_MSVC)
+
+// Clang is cleverer about coalescing int3s, so we need to add a unique-ish
+// instruction following the __debugbreak() to have it emit distinct locations
+// for CHECKs rather than collapsing them all together. It would be nice to use
+// a short intrinsic to do this (and perhaps have only one implementation for
+// both clang and MSVC), however clang-cl currently does not support intrinsics.
+// On the flip side, MSVC x64 doesn't support inline asm. So, we have to have
+// two implementations. Normally clang-cl's version will be 5 bytes (1 for
+// `int3`, 2 for `ud2`, 2 for `push byte imm`, however, TODO(scottmg):
+// https://crbug.com/694670 clang-cl doesn't currently support %'ing
+// __COUNTER__, so eventually it will emit the dword form of push.
+// TODO(scottmg): Reinvestigate a short sequence that will work on both
+// compilers once clang supports more intrinsics. See https://crbug.com/693713.
+#if !defined(__clang__)
+#define TRAP_SEQUENCE() __debugbreak()
+#elif defined(ARCH_CPU_ARM64)
+#define TRAP_SEQUENCE() \
+  __asm volatile("brk #0\n hlt %0\n" ::"i"(__COUNTER__ % 65536));
+#else
+#define TRAP_SEQUENCE() ({ {__asm int 3 __asm ud2 __asm push __COUNTER__}; })
+#endif  // __clang__
+
+#else
+#error Port
+#endif  // COMPILER_GCC
+
+// CHECK() and the trap sequence can be invoked from a constexpr function.
+// This could make compilation fail on GCC, as it forbids directly using inline
+// asm inside a constexpr function. However, it allows calling a lambda
+// expression including the same asm.
+// The side effect is that the top of the stacktrace will not point to the
+// calling function, but to this anonymous lambda. This is still useful as the
+// full name of the lambda will typically include the name of the function that
+// calls CHECK() and the debugger will still break at the right line of code.
+#if !defined(COMPILER_GCC)
+#define WRAPPED_TRAP_SEQUENCE() TRAP_SEQUENCE()
+#else
+#define WRAPPED_TRAP_SEQUENCE() \
+  do {                          \
+    [] { TRAP_SEQUENCE(); }();  \
+  } while (false)
+#endif
+
+#if defined(__clang__) || defined(COMPILER_GCC)
+#define IMMEDIATE_CRASH()    \
+  ({                         \
+    WRAPPED_TRAP_SEQUENCE(); \
+    __builtin_unreachable(); \
+  })
+#else
+// This is supporting non-chromium user of logging.h to build with MSVC, like
+// pdfium. On MSVC there is no __builtin_unreachable().
+#define IMMEDIATE_CRASH() WRAPPED_TRAP_SEQUENCE()
+#endif
+
 // CHECK dies with a fatal error if condition is not true.  It is *not*
 // controlled by NDEBUG, so the check will be executed regardless of
 // compilation mode.
@@ -570,6 +659,26 @@ class CheckOpResult {
 
 #else  // !(OFFICIAL_BUILD && NDEBUG)
 
+#if defined(_PREFAST_) && defined(OS_WIN)
+// Use __analysis_assume to tell the VC++ static analysis engine that
+// assert conditions are true, to suppress warnings.  The LAZY_STREAM
+// parameter doesn't reference 'condition' in /analyze builds because
+// this evaluation confuses /analyze. The !! before condition is because
+// __analysis_assume gets confused on some conditions:
+// http://randomascii.wordpress.com/2011/09/13/analyze-for-visual-studio-the-ugly-part-5/
+
+#define CHECK(condition)                    \
+  __analysis_assume(!!(condition)),         \
+      LAZY_STREAM(LOG_STREAM(FATAL), false) \
+          << "Check failed: " #condition ". "
+
+#define PCHECK(condition)                    \
+  __analysis_assume(!!(condition)),          \
+      LAZY_STREAM(PLOG_STREAM(FATAL), false) \
+          << "Check failed: " #condition ". "
+
+#else  // _PREFAST_
+
 // Do as much work as possible out of line to reduce inline code size.
 #define CHECK(condition)                                                      \
   LAZY_STREAM(::logging::LogMessage(__FILE__, __LINE__, #condition).stream(), \
@@ -579,6 +688,8 @@ class CheckOpResult {
   LAZY_STREAM(PLOG_STREAM(FATAL), !ANALYZER_ASSUME_TRUE(condition)) \
       << "Check failed: " #condition ". "
 
+#endif  // _PREFAST_
+
 // Helper macro for binary operators.
 // Don't use this macro directly in your code, use CHECK_EQ et al below.
 // The 'switch' is used to prevent the 'else' from being ambiguous when the
@@ -607,16 +718,6 @@ MakeCheckOpValueString(std::ostream* os, const T& v) {
   (*os) << v;
 }
 
-// Overload for types that no operator<< but do have .ToString() defined.
-template <typename T>
-inline typename std::enable_if<
-    !base::internal::SupportsOstreamOperator<const T&>::value &&
-        base::internal::SupportsToString<const T&>::value,
-    void>::type
-MakeCheckOpValueString(std::ostream* os, const T& v) {
-  (*os) << v.ToString();
-}
-
 // Provide an overload for functions and function pointers. Function pointers
 // don't implicitly convert to void* but do implicitly convert to bool, so
 // without this function pointers are always printed as 1 or 0. (MSVC isn't
@@ -685,21 +786,20 @@ std::string* MakeCheckOpString<std::string, std::string>(
 // The checked condition is wrapped with ANALYZER_ASSUME_TRUE, which under
 // static analysis builds, blocks analysis of the current path if the
 // condition is false.
-#define DEFINE_CHECK_OP_IMPL(name, op)                                 \
-  template <class t1, class t2>                                        \
-  constexpr std::string* Check##name##Impl(const t1& v1, const t2& v2, \
-                                           const char* names) {        \
-    if (ANALYZER_ASSUME_TRUE(v1 op v2))                                \
-      return nullptr;                                                  \
-    else                                                               \
-      return ::logging::MakeCheckOpString(v1, v2, names);              \
-  }                                                                    \
-  constexpr std::string* Check##name##Impl(int v1, int v2,             \
-                                           const char* names) {        \
-    if (ANALYZER_ASSUME_TRUE(v1 op v2))                                \
-      return nullptr;                                                  \
-    else                                                               \
-      return ::logging::MakeCheckOpString(v1, v2, names);              \
+#define DEFINE_CHECK_OP_IMPL(name, op)                                       \
+  template <class t1, class t2>                                              \
+  inline std::string* Check##name##Impl(const t1& v1, const t2& v2,          \
+                                        const char* names) {                 \
+    if (ANALYZER_ASSUME_TRUE(v1 op v2))                                      \
+      return NULL;                                                           \
+    else                                                                     \
+      return ::logging::MakeCheckOpString(v1, v2, names);                    \
+  }                                                                          \
+  inline std::string* Check##name##Impl(int v1, int v2, const char* names) { \
+    if (ANALYZER_ASSUME_TRUE(v1 op v2))                                      \
+      return NULL;                                                           \
+    else                                                                     \
+      return ::logging::MakeCheckOpString(v1, v2, names);                    \
   }
 DEFINE_CHECK_OP_IMPL(EQ, ==)
 DEFINE_CHECK_OP_IMPL(NE, !=)
@@ -717,9 +817,9 @@ DEFINE_CHECK_OP_IMPL(GT, > )
 #define CHECK_GT(val1, val2) CHECK_OP(GT, > , val1, val2)
 
 #if defined(NDEBUG) && !defined(DCHECK_ALWAYS_ON)
-#define DCHECK_IS_ON() false
+#define DCHECK_IS_ON() 0
 #else
-#define DCHECK_IS_ON() true
+#define DCHECK_IS_ON() 1
 #endif
 
 // Definitions for DLOG et al.
@@ -785,6 +885,21 @@ const LogSeverity LOG_DCHECK = LOG_FATAL;
 // DCHECK_IS_ON() is true. When DCHECK_IS_ON() is false, the macros use
 // EAT_STREAM_PARAMETERS to avoid expressions that would create temporaries.
 
+#if defined(_PREFAST_) && defined(OS_WIN)
+// See comments on the previous use of __analysis_assume.
+
+#define DCHECK(condition)                    \
+  __analysis_assume(!!(condition)),          \
+      LAZY_STREAM(LOG_STREAM(DCHECK), false) \
+          << "Check failed: " #condition ". "
+
+#define DPCHECK(condition)                    \
+  __analysis_assume(!!(condition)),           \
+      LAZY_STREAM(PLOG_STREAM(DCHECK), false) \
+          << "Check failed: " #condition ". "
+
+#else  // !(defined(_PREFAST_) && defined(OS_WIN))
+
 #if DCHECK_IS_ON()
 
 #define DCHECK(condition)                                           \
@@ -801,6 +916,8 @@ const LogSeverity LOG_DCHECK = LOG_FATAL;
 
 #endif  // DCHECK_IS_ON()
 
+#endif  // defined(_PREFAST_) && defined(OS_WIN)
+
 // Helper macro for binary operators.
 // Don't use this macro directly in your code, use DCHECK_EQ et al below.
 // The 'switch' is used to prevent the 'else' from being ambiguous when the
@@ -865,7 +982,7 @@ const LogSeverity LOG_DCHECK = LOG_FATAL;
 #define DCHECK_GE(val1, val2) DCHECK_OP(GE, >=, val1, val2)
 #define DCHECK_GT(val1, val2) DCHECK_OP(GT, > , val1, val2)
 
-#if BUILDFLAG(ENABLE_LOG_ERROR_NOT_REACHED)
+#if !DCHECK_IS_ON() && defined(OS_CHROMEOS)
 // Implement logging of NOTREACHED() as a dedicated function to get function
 // call overhead down to a minimum.
 void LogErrorNotReached(const char* file, int line);
@@ -921,7 +1038,6 @@ class BASE_EXPORT LogMessage {
   // The file and line information passed in to the constructor.
   const char* file_;
   const int line_;
-  const char* file_basename_;
 
   // This is useful since the LogMessage class uses a lot of Win32 calls
   // that will lose the value of GLE and the code that called the log function
@@ -1001,14 +1117,6 @@ class BASE_EXPORT ErrnoLogMessage {
 //       after this call.
 BASE_EXPORT void CloseLogFile();
 
-#if defined(OS_CHROMEOS)
-// Returns a new file handle that will write to the same destination as the
-// currently open log file. Returns nullptr if logging to a file is disabled,
-// or if opening the file failed. This is intended to be used to initialize
-// logging in child processes that are unable to open files.
-BASE_EXPORT FILE* DuplicateLogFILE();
-#endif
-
 // Async signal safe logging mechanism.
 BASE_EXPORT void RawLog(int level, const char* message);
 
@@ -1027,7 +1135,7 @@ BASE_EXPORT void RawLog(int level, const char* message);
 BASE_EXPORT bool IsLoggingToFileEnabled();
 
 // Returns the default log file path.
-BASE_EXPORT std::wstring GetLogFileFullPath();
+BASE_EXPORT base::string16 GetLogFileFullPath();
 #endif
 
 }  // namespace logging
@@ -1065,13 +1173,18 @@ inline std::ostream& operator<<(std::ostream& out, const std::wstring& wstr) {
 #define NOTIMPLEMENTED_MSG "NOT IMPLEMENTED"
 #endif
 
-#define NOTIMPLEMENTED() DLOG(ERROR) << NOTIMPLEMENTED_MSG
-#define NOTIMPLEMENTED_LOG_ONCE()                       \
-  do {                                                  \
-    static bool logged_once = false;                    \
-    DLOG_IF(ERROR, !logged_once) << NOTIMPLEMENTED_MSG; \
-    logged_once = true;                                 \
-  } while (0);                                          \
+#if defined(OS_ANDROID) && defined(OFFICIAL_BUILD)
+#define NOTIMPLEMENTED() EAT_STREAM_PARAMETERS
+#define NOTIMPLEMENTED_LOG_ONCE() EAT_STREAM_PARAMETERS
+#else
+#define NOTIMPLEMENTED() LOG(ERROR) << NOTIMPLEMENTED_MSG
+#define NOTIMPLEMENTED_LOG_ONCE()                      \
+  do {                                                 \
+    static bool logged_once = false;                   \
+    LOG_IF(ERROR, !logged_once) << NOTIMPLEMENTED_MSG; \
+    logged_once = true;                                \
+  } while (0);                                         \
   EAT_STREAM_PARAMETERS
+#endif
 
 #endif  // BASE_LOGGING_H_

security/sandbox/chromium/base/macros.h

@@ -10,10 +10,6 @@
 #ifndef BASE_MACROS_H_
 #define BASE_MACROS_H_
 
-// ALL DISALLOW_xxx MACROS ARE DEPRECATED; DO NOT USE IN NEW CODE.
-// Use explicit deletions instead.  See the section on copyability/movability in
-// //styleguide/c++/c++-dos-and-donts.md for more information.
-
 // Put this in the declarations for a class to be uncopyable.
 #define DISALLOW_COPY(TypeName) \
   TypeName(const TypeName&) = delete

security/sandbox/chromium/base/memory/platform_shared_memory_region.cc

@@ -1,62 +0,0 @@
-// Copyright 2018 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#include "base/memory/platform_shared_memory_region.h"
-
-#include "base/memory/shared_memory_mapping.h"
-#include "base/numerics/checked_math.h"
-
-namespace base {
-namespace subtle {
-
-// static
-PlatformSharedMemoryRegion PlatformSharedMemoryRegion::CreateWritable(
-    size_t size) {
-  return Create(Mode::kWritable, size);
-}
-
-// static
-PlatformSharedMemoryRegion PlatformSharedMemoryRegion::CreateUnsafe(
-    size_t size) {
-  return Create(Mode::kUnsafe, size);
-}
-
-PlatformSharedMemoryRegion::PlatformSharedMemoryRegion() = default;
-PlatformSharedMemoryRegion::PlatformSharedMemoryRegion(
-    PlatformSharedMemoryRegion&& other) = default;
-PlatformSharedMemoryRegion& PlatformSharedMemoryRegion::operator=(
-    PlatformSharedMemoryRegion&& other) = default;
-PlatformSharedMemoryRegion::~PlatformSharedMemoryRegion() = default;
-
-PlatformSharedMemoryRegion::ScopedPlatformHandle
-PlatformSharedMemoryRegion::PassPlatformHandle() {
-  return std::move(handle_);
-}
-
-bool PlatformSharedMemoryRegion::MapAt(off_t offset,
-                                       size_t size,
-                                       void** memory,
-                                       size_t* mapped_size) const {
-  if (!IsValid())
-    return false;
-
-  if (size == 0)
-    return false;
-
-  size_t end_byte;
-  if (!CheckAdd(offset, size).AssignIfValid(&end_byte) || end_byte > size_) {
-    return false;
-  }
-
-  bool success = MapAtInternal(offset, size, memory, mapped_size);
-  if (success) {
-    DCHECK_EQ(
-        0U, reinterpret_cast<uintptr_t>(*memory) & (kMapMinimumAlignment - 1));
-  }
-
-  return success;
-}
-
-}  // namespace subtle
-}  // namespace base

security/sandbox/chromium/base/memory/platform_shared_memory_region.h

@@ -1,301 +0,0 @@
-// Copyright 2018 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#ifndef BASE_MEMORY_PLATFORM_SHARED_MEMORY_REGION_H_
-#define BASE_MEMORY_PLATFORM_SHARED_MEMORY_REGION_H_
-
-#include <utility>
-
-#include "base/compiler_specific.h"
-#include "base/gtest_prod_util.h"
-#include "base/macros.h"
-#include "base/unguessable_token.h"
-#include "build/build_config.h"
-
-#if defined(OS_MACOSX) && !defined(OS_IOS)
-#include <mach/mach.h>
-#include "base/mac/scoped_mach_port.h"
-#elif defined(OS_FUCHSIA)
-#include <lib/zx/vmo.h>
-#elif defined(OS_WIN)
-#include "base/win/scoped_handle.h"
-#include "base/win/windows_types.h"
-#elif defined(OS_POSIX)
-#include <sys/types.h>
-#include "base/file_descriptor_posix.h"
-#include "base/files/scoped_file.h"
-#endif
-
-#if defined(OS_LINUX)
-namespace content {
-class SandboxIPCHandler;
-}
-#endif
-
-namespace base {
-namespace subtle {
-
-#if defined(OS_POSIX) && (!defined(OS_MACOSX) || defined(OS_IOS)) && \
-    !defined(OS_ANDROID)
-// Helper structs to keep two descriptors on POSIX. It's needed to support
-// ConvertToReadOnly().
-struct BASE_EXPORT FDPair {
-  // The main shared memory descriptor that is used for mapping. May be either
-  // writable or read-only, depending on region's mode.
-  int fd;
-  // The read-only descriptor, valid only in kWritable mode. Replaces |fd| when
-  // a region is converted to read-only.
-  int readonly_fd;
-};
-
-struct BASE_EXPORT ScopedFDPair {
-  ScopedFDPair();
-  ScopedFDPair(ScopedFD in_fd, ScopedFD in_readonly_fd);
-  ScopedFDPair(ScopedFDPair&&);
-  ScopedFDPair& operator=(ScopedFDPair&&);
-  ~ScopedFDPair();
-
-  FDPair get() const;
-
-  ScopedFD fd;
-  ScopedFD readonly_fd;
-};
-#endif
-
-// Implementation class for shared memory regions.
-//
-// This class does the following:
-//
-// - Wraps and owns a shared memory region platform handle.
-// - Provides a way to allocate a new region of platform shared memory of given
-//   size.
-// - Provides a way to create mapping of the region in the current process'
-//   address space, under special access-control constraints (see Mode).
-// - Provides methods to help transferring the handle across process boundaries.
-// - Holds a 128-bit unique identifier used to uniquely identify the same
-//   kernel region resource across processes (used for memory tracking).
-// - Has a method to retrieve the region's size in bytes.
-//
-// IMPORTANT NOTE: Users should never use this directly, but
-// ReadOnlySharedMemoryRegion, WritableSharedMemoryRegion or
-// UnsafeSharedMemoryRegion since this is an implementation class.
-class BASE_EXPORT PlatformSharedMemoryRegion {
- public:
-  // Permission mode of the platform handle. Each mode corresponds to one of the
-  // typed shared memory classes:
-  //
-  // * ReadOnlySharedMemoryRegion: A region that can only create read-only
-  // mappings.
-  //
-  // * WritableSharedMemoryRegion: A region that can only create writable
-  // mappings. The region can be demoted to ReadOnlySharedMemoryRegion without
-  // the possibility of promoting back to writable.
-  //
-  // * UnsafeSharedMemoryRegion: A region that can only create writable
-  // mappings. The region cannot be demoted to ReadOnlySharedMemoryRegion.
-  enum class Mode {
-    kReadOnly,  // ReadOnlySharedMemoryRegion
-    kWritable,  // WritableSharedMemoryRegion
-    kUnsafe,    // UnsafeSharedMemoryRegion
-    kMaxValue = kUnsafe
-  };
-
-  // Errors that can occur during Shared Memory construction.
-  // These match tools/metrics/histograms/enums.xml.
-  // This enum is append-only.
-  enum class CreateError {
-    SUCCESS = 0,
-    SIZE_ZERO = 1,
-    SIZE_TOO_LARGE = 2,
-    INITIALIZE_ACL_FAILURE = 3,
-    INITIALIZE_SECURITY_DESC_FAILURE = 4,
-    SET_SECURITY_DESC_FAILURE = 5,
-    CREATE_FILE_MAPPING_FAILURE = 6,
-    REDUCE_PERMISSIONS_FAILURE = 7,
-    ALREADY_EXISTS = 8,
-    ALLOCATE_FILE_REGION_FAILURE = 9,
-    FSTAT_FAILURE = 10,
-    INODES_MISMATCH = 11,
-    GET_SHMEM_TEMP_DIR_FAILURE = 12,
-    kMaxValue = GET_SHMEM_TEMP_DIR_FAILURE
-  };
-
-#if defined(OS_LINUX)
-  // Structure to limit access to executable region creation.
-  struct ExecutableRegion {
-   private:
-    // Creates a new shared memory region the unsafe mode (writable and not and
-    // convertible to read-only), and in addition marked executable. A ScopedFD
-    // to this region is returned. Any any mapping will have to be done
-    // manually, including setting executable permissions if necessary
-    //
-    // This is only used to support sandbox_ipc_linux.cc, and should not be used
-    // anywhere else in chrome. This is restricted via AllowCreateExecutable.
-    // TODO(crbug.com/982879): remove this when NaCl is unshipped.
-    //
-    // Returns an invalid ScopedFD if the call fails.
-    static ScopedFD CreateFD(size_t size);
-
-    friend class content::SandboxIPCHandler;
-  };
-#endif
-
-// Platform-specific shared memory type used by this class.
-#if defined(OS_MACOSX) && !defined(OS_IOS)
-  using PlatformHandle = mach_port_t;
-  using ScopedPlatformHandle = mac::ScopedMachSendRight;
-#elif defined(OS_FUCHSIA)
-  using PlatformHandle = zx::unowned_vmo;
-  using ScopedPlatformHandle = zx::vmo;
-#elif defined(OS_WIN)
-  using PlatformHandle = HANDLE;
-  using ScopedPlatformHandle = win::ScopedHandle;
-#elif defined(OS_ANDROID)
-  using PlatformHandle = int;
-  using ScopedPlatformHandle = ScopedFD;
-#else
-  using PlatformHandle = FDPair;
-  using ScopedPlatformHandle = ScopedFDPair;
-#endif
-
-  // The minimum alignment in bytes that any mapped address produced by Map()
-  // and MapAt() is guaranteed to have.
-  enum { kMapMinimumAlignment = 32 };
-
-  // Creates a new PlatformSharedMemoryRegion with corresponding mode and size.
-  // Creating in kReadOnly mode isn't supported because then there will be no
-  // way to modify memory content.
-  static PlatformSharedMemoryRegion CreateWritable(size_t size);
-  static PlatformSharedMemoryRegion CreateUnsafe(size_t size);
-
-  // Returns a new PlatformSharedMemoryRegion that takes ownership of the
-  // |handle|. All parameters must be taken from another valid
-  // PlatformSharedMemoryRegion instance, e.g. |size| must be equal to the
-  // actual region size as allocated by the kernel.
-  // Closes the |handle| and returns an invalid instance if passed parameters
-  // are invalid.
-  static PlatformSharedMemoryRegion Take(ScopedPlatformHandle handle,
-                                         Mode mode,
-                                         size_t size,
-                                         const UnguessableToken& guid);
-#if defined(OS_POSIX) && !defined(OS_ANDROID) && \
-    !(defined(OS_MACOSX) && !defined(OS_IOS))
-  // Specialized version of Take() for POSIX that takes only one file descriptor
-  // instead of pair. Cannot be used with kWritable |mode|.
-  static PlatformSharedMemoryRegion Take(ScopedFD handle,
-                                         Mode mode,
-                                         size_t size,
-                                         const UnguessableToken& guid);
-#endif
-
-  // Default constructor initializes an invalid instance, i.e. an instance that
-  // doesn't wrap any valid platform handle.
-  PlatformSharedMemoryRegion();
-
-  // Move operations are allowed.
-  PlatformSharedMemoryRegion(PlatformSharedMemoryRegion&&);
-  PlatformSharedMemoryRegion& operator=(PlatformSharedMemoryRegion&&);
-
-  // Destructor closes the platform handle. Does nothing if the handle is
-  // invalid.
-  ~PlatformSharedMemoryRegion();
-
-  // Passes ownership of the platform handle to the caller. The current instance
-  // becomes invalid. It's the responsibility of the caller to close the
-  // handle. If the current instance is invalid, ScopedPlatformHandle will also
-  // be invalid.
-  ScopedPlatformHandle PassPlatformHandle() WARN_UNUSED_RESULT;
-
-  // Returns the platform handle. The current instance keeps ownership of this
-  // handle.
-  PlatformHandle GetPlatformHandle() const;
-
-  // Whether the platform handle is valid.
-  bool IsValid() const;
-
-  // Duplicates the platform handle and creates a new PlatformSharedMemoryRegion
-  // with the same |mode_|, |size_| and |guid_| that owns this handle. Returns
-  // invalid region on failure, the current instance remains valid.
-  // Can be called only in kReadOnly and kUnsafe modes, CHECK-fails if is
-  // called in kWritable mode.
-  PlatformSharedMemoryRegion Duplicate() const;
-
-  // Converts the region to read-only. Returns whether the operation succeeded.
-  // Makes the current instance invalid on failure. Can be called only in
-  // kWritable mode, all other modes will CHECK-fail. The object will have
-  // kReadOnly mode after this call on success.
-  bool ConvertToReadOnly();
-#if defined(OS_MACOSX) && !defined(OS_IOS)
-  // Same as above, but |mapped_addr| is used as a hint to avoid additional
-  // mapping of the memory object.
-  // |mapped_addr| must be mapped location of |memory_object_|. If the location
-  // is unknown, |mapped_addr| should be |nullptr|.
-  bool ConvertToReadOnly(void* mapped_addr);
-#endif  // defined(OS_MACOSX) && !defined(OS_IOS)
-
-  // Converts the region to unsafe. Returns whether the operation succeeded.
-  // Makes the current instance invalid on failure. Can be called only in
-  // kWritable mode, all other modes will CHECK-fail. The object will have
-  // kUnsafe mode after this call on success.
-  bool ConvertToUnsafe();
-
-  // Maps |size| bytes of the shared memory region starting with the given
-  // |offset| into the caller's address space. |offset| must be aligned to value
-  // of |SysInfo::VMAllocationGranularity()|. Fails if requested bytes are out
-  // of the region limits.
-  // Returns true and sets |memory| and |mapped_size| on success, returns false
-  // and leaves output parameters in unspecified state otherwise. The mapped
-  // address is guaranteed to have an alignment of at least
-  // |kMapMinimumAlignment|.
-  bool MapAt(off_t offset,
-             size_t size,
-             void** memory,
-             size_t* mapped_size) const;
-
-  const UnguessableToken& GetGUID() const { return guid_; }
-
-  size_t GetSize() const { return size_; }
-
-  Mode GetMode() const { return mode_; }
-
- private:
-  FRIEND_TEST_ALL_PREFIXES(PlatformSharedMemoryRegionTest,
-                           CreateReadOnlyRegionDeathTest);
-  FRIEND_TEST_ALL_PREFIXES(PlatformSharedMemoryRegionTest,
-                           CheckPlatformHandlePermissionsCorrespondToMode);
-  static PlatformSharedMemoryRegion Create(Mode mode,
-                                           size_t size
-#if defined(OS_LINUX)
-                                           ,
-                                           bool executable = false
-#endif
-  );
-
-  static bool CheckPlatformHandlePermissionsCorrespondToMode(
-      PlatformHandle handle,
-      Mode mode,
-      size_t size);
-
-  PlatformSharedMemoryRegion(ScopedPlatformHandle handle,
-                             Mode mode,
-                             size_t size,
-                             const UnguessableToken& guid);
-
-  bool MapAtInternal(off_t offset,
-                     size_t size,
-                     void** memory,
-                     size_t* mapped_size) const;
-
-  ScopedPlatformHandle handle_;
-  Mode mode_ = Mode::kReadOnly;
-  size_t size_ = 0;
-  UnguessableToken guid_;
-
-  DISALLOW_COPY_AND_ASSIGN(PlatformSharedMemoryRegion);
-};
-
-}  // namespace subtle
-}  // namespace base
-
-#endif  // BASE_MEMORY_PLATFORM_SHARED_MEMORY_REGION_H_

security/sandbox/chromium/base/memory/platform_shared_memory_region_win.cc

@@ -1,343 +0,0 @@
-// Copyright 2018 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#include "base/memory/platform_shared_memory_region.h"
-
-#include <aclapi.h>
-#include <stddef.h>
-#include <stdint.h>
-
-#include "base/allocator/partition_allocator/page_allocator.h"
-#include "base/bits.h"
-#include "base/metrics/histogram_functions.h"
-#include "base/metrics/histogram_macros.h"
-#include "base/process/process_handle.h"
-#include "base/rand_util.h"
-#include "base/strings/string_util.h"
-#include "base/strings/stringprintf.h"
-#include "base/strings/utf_string_conversions.h"
-#include "base/win/windows_version.h"
-
-namespace base {
-namespace subtle {
-
-namespace {
-
-// Emits UMA metrics about encountered errors. Pass zero (0) for |winerror|
-// if there is no associated Windows error.
-void LogError(PlatformSharedMemoryRegion::CreateError error, DWORD winerror) {
-  UMA_HISTOGRAM_ENUMERATION("SharedMemory.CreateError", error);
-  static_assert(ERROR_SUCCESS == 0, "Windows error code changed!");
-  if (winerror != ERROR_SUCCESS)
-    UmaHistogramSparse("SharedMemory.CreateWinError", winerror);
-}
-
-typedef enum _SECTION_INFORMATION_CLASS {
-  SectionBasicInformation,
-} SECTION_INFORMATION_CLASS;
-
-typedef struct _SECTION_BASIC_INFORMATION {
-  PVOID BaseAddress;
-  ULONG Attributes;
-  LARGE_INTEGER Size;
-} SECTION_BASIC_INFORMATION, *PSECTION_BASIC_INFORMATION;
-
-typedef ULONG(__stdcall* NtQuerySectionType)(
-    HANDLE SectionHandle,
-    SECTION_INFORMATION_CLASS SectionInformationClass,
-    PVOID SectionInformation,
-    ULONG SectionInformationLength,
-    PULONG ResultLength);
-
-// Returns the length of the memory section starting at the supplied address.
-size_t GetMemorySectionSize(void* address) {
-  MEMORY_BASIC_INFORMATION memory_info;
-  if (!::VirtualQuery(address, &memory_info, sizeof(memory_info)))
-    return 0;
-  return memory_info.RegionSize -
-         (static_cast<char*>(address) -
-          static_cast<char*>(memory_info.AllocationBase));
-}
-
-// Checks if the section object is safe to map. At the moment this just means
-// it's not an image section.
-bool IsSectionSafeToMap(HANDLE handle) {
-  static NtQuerySectionType nt_query_section_func =
-      reinterpret_cast<NtQuerySectionType>(
-          ::GetProcAddress(::GetModuleHandle(L"ntdll.dll"), "NtQuerySection"));
-  DCHECK(nt_query_section_func);
-
-  // The handle must have SECTION_QUERY access for this to succeed.
-  SECTION_BASIC_INFORMATION basic_information = {};
-  ULONG status =
-      nt_query_section_func(handle, SectionBasicInformation, &basic_information,
-                            sizeof(basic_information), nullptr);
-  if (status)
-    return false;
-  return (basic_information.Attributes & SEC_IMAGE) != SEC_IMAGE;
-}
-
-// Returns a HANDLE on success and |nullptr| on failure.
-// This function is similar to CreateFileMapping, but removes the permissions
-// WRITE_DAC, WRITE_OWNER, READ_CONTROL, and DELETE.
-//
-// A newly created file mapping has two sets of permissions. It has access
-// control permissions (WRITE_DAC, WRITE_OWNER, READ_CONTROL, and DELETE) and
-// file permissions (FILE_MAP_READ, FILE_MAP_WRITE, etc.). The Chrome sandbox
-// prevents HANDLEs with the WRITE_DAC permission from being duplicated into
-// unprivileged processes.
-//
-// In order to remove the access control permissions, after being created the
-// handle is duplicated with only the file access permissions.
-HANDLE CreateFileMappingWithReducedPermissions(SECURITY_ATTRIBUTES* sa,
-                                               size_t rounded_size,
-                                               LPCWSTR name) {
-  HANDLE h = CreateFileMapping(INVALID_HANDLE_VALUE, sa, PAGE_READWRITE, 0,
-                               static_cast<DWORD>(rounded_size), name);
-  if (!h) {
-    LogError(
-        PlatformSharedMemoryRegion::CreateError::CREATE_FILE_MAPPING_FAILURE,
-        GetLastError());
-    return nullptr;
-  }
-
-  HANDLE h2;
-  ProcessHandle process = GetCurrentProcess();
-  BOOL success = ::DuplicateHandle(
-      process, h, process, &h2, FILE_MAP_READ | FILE_MAP_WRITE | SECTION_QUERY,
-      FALSE, 0);
-  BOOL rv = ::CloseHandle(h);
-  DCHECK(rv);
-
-  if (!success) {
-    LogError(
-        PlatformSharedMemoryRegion::CreateError::REDUCE_PERMISSIONS_FAILURE,
-        GetLastError());
-    return nullptr;
-  }
-
-  return h2;
-}
-
-}  // namespace
-
-// static
-PlatformSharedMemoryRegion PlatformSharedMemoryRegion::Take(
-    win::ScopedHandle handle,
-    Mode mode,
-    size_t size,
-    const UnguessableToken& guid) {
-  if (!handle.IsValid())
-    return {};
-
-  if (size == 0)
-    return {};
-
-  if (size > static_cast<size_t>(std::numeric_limits<int>::max()))
-    return {};
-
-  if (!IsSectionSafeToMap(handle.Get()))
-    return {};
-
-  CHECK(
-      CheckPlatformHandlePermissionsCorrespondToMode(handle.Get(), mode, size));
-
-  return PlatformSharedMemoryRegion(std::move(handle), mode, size, guid);
-}
-
-HANDLE PlatformSharedMemoryRegion::GetPlatformHandle() const {
-  return handle_.Get();
-}
-
-bool PlatformSharedMemoryRegion::IsValid() const {
-  return handle_.IsValid();
-}
-
-PlatformSharedMemoryRegion PlatformSharedMemoryRegion::Duplicate() const {
-  if (!IsValid())
-    return {};
-
-  CHECK_NE(mode_, Mode::kWritable)
-      << "Duplicating a writable shared memory region is prohibited";
-
-  HANDLE duped_handle;
-  ProcessHandle process = GetCurrentProcess();
-  BOOL success =
-      ::DuplicateHandle(process, handle_.Get(), process, &duped_handle, 0,
-                        FALSE, DUPLICATE_SAME_ACCESS);
-  if (!success)
-    return {};
-
-  return PlatformSharedMemoryRegion(win::ScopedHandle(duped_handle), mode_,
-                                    size_, guid_);
-}
-
-bool PlatformSharedMemoryRegion::ConvertToReadOnly() {
-  if (!IsValid())
-    return false;
-
-  CHECK_EQ(mode_, Mode::kWritable)
-      << "Only writable shared memory region can be converted to read-only";
-
-  win::ScopedHandle handle_copy(handle_.Take());
-
-  HANDLE duped_handle;
-  ProcessHandle process = GetCurrentProcess();
-  BOOL success =
-      ::DuplicateHandle(process, handle_copy.Get(), process, &duped_handle,
-                        FILE_MAP_READ | SECTION_QUERY, FALSE, 0);
-  if (!success)
-    return false;
-
-  handle_.Set(duped_handle);
-  mode_ = Mode::kReadOnly;
-  return true;
-}
-
-bool PlatformSharedMemoryRegion::ConvertToUnsafe() {
-  if (!IsValid())
-    return false;
-
-  CHECK_EQ(mode_, Mode::kWritable)
-      << "Only writable shared memory region can be converted to unsafe";
-
-  mode_ = Mode::kUnsafe;
-  return true;
-}
-
-bool PlatformSharedMemoryRegion::MapAtInternal(off_t offset,
-                                               size_t size,
-                                               void** memory,
-                                               size_t* mapped_size) const {
-  bool write_allowed = mode_ != Mode::kReadOnly;
-  // Try to map the shared memory. On the first failure, release any reserved
-  // address space for a single entry.
-  for (int i = 0; i < 2; ++i) {
-    *memory = MapViewOfFile(
-        handle_.Get(), FILE_MAP_READ | (write_allowed ? FILE_MAP_WRITE : 0),
-        static_cast<uint64_t>(offset) >> 32, static_cast<DWORD>(offset), size);
-    if (*memory)
-      break;
-    ReleaseReservation();
-  }
-  if (!*memory) {
-    DPLOG(ERROR) << "Failed executing MapViewOfFile";
-    return false;
-  }
-
-  *mapped_size = GetMemorySectionSize(*memory);
-  return true;
-}
-
-// static
-PlatformSharedMemoryRegion PlatformSharedMemoryRegion::Create(Mode mode,
-                                                              size_t size) {
-  // TODO(crbug.com/210609): NaCl forces us to round up 64k here, wasting 32k
-  // per mapping on average.
-  static const size_t kSectionSize = 65536;
-  if (size == 0) {
-    LogError(CreateError::SIZE_ZERO, 0);
-    return {};
-  }
-
-  // Aligning may overflow so check that the result doesn't decrease.
-  size_t rounded_size = bits::Align(size, kSectionSize);
-  if (rounded_size < size ||
-      rounded_size > static_cast<size_t>(std::numeric_limits<int>::max())) {
-    LogError(CreateError::SIZE_TOO_LARGE, 0);
-    return {};
-  }
-
-  CHECK_NE(mode, Mode::kReadOnly) << "Creating a region in read-only mode will "
-                                     "lead to this region being non-modifiable";
-
-  // Add an empty DACL to enforce anonymous read-only sections.
-  ACL dacl;
-  SECURITY_DESCRIPTOR sd;
-  if (!InitializeAcl(&dacl, sizeof(dacl), ACL_REVISION)) {
-    LogError(CreateError::INITIALIZE_ACL_FAILURE, GetLastError());
-    return {};
-  }
-  if (!InitializeSecurityDescriptor(&sd, SECURITY_DESCRIPTOR_REVISION)) {
-    LogError(CreateError::INITIALIZE_SECURITY_DESC_FAILURE, GetLastError());
-    return {};
-  }
-  if (!SetSecurityDescriptorDacl(&sd, TRUE, &dacl, FALSE)) {
-    LogError(CreateError::SET_SECURITY_DESC_FAILURE, GetLastError());
-    return {};
-  }
-
-  string16 name;
-  if (win::GetVersion() < win::Version::WIN8_1) {
-    // Windows < 8.1 ignores DACLs on certain unnamed objects (like shared
-    // sections). So, we generate a random name when we need to enforce
-    // read-only.
-    uint64_t rand_values[4];
-    RandBytes(&rand_values, sizeof(rand_values));
-    name = ASCIIToUTF16(StringPrintf("CrSharedMem_%016llx%016llx%016llx%016llx",
-                                     rand_values[0], rand_values[1],
-                                     rand_values[2], rand_values[3]));
-    DCHECK(!name.empty());
-  }
-
-  SECURITY_ATTRIBUTES sa = {sizeof(sa), &sd, FALSE};
-  // Ask for the file mapping with reduced permisions to avoid passing the
-  // access control permissions granted by default into unpriviledged process.
-  HANDLE h = CreateFileMappingWithReducedPermissions(
-      &sa, rounded_size, name.empty() ? nullptr : as_wcstr(name));
-  if (h == nullptr) {
-    // The error is logged within CreateFileMappingWithReducedPermissions().
-    return {};
-  }
-
-  win::ScopedHandle scoped_h(h);
-  // Check if the shared memory pre-exists.
-  if (GetLastError() == ERROR_ALREADY_EXISTS) {
-    LogError(CreateError::ALREADY_EXISTS, ERROR_ALREADY_EXISTS);
-    return {};
-  }
-
-  LogError(CreateError::SUCCESS, ERROR_SUCCESS);
-  return PlatformSharedMemoryRegion(std::move(scoped_h), mode, size,
-                                    UnguessableToken::Create());
-}
-
-// static
-bool PlatformSharedMemoryRegion::CheckPlatformHandlePermissionsCorrespondToMode(
-    PlatformHandle handle,
-    Mode mode,
-    size_t size) {
-  // Call ::DuplicateHandle() with FILE_MAP_WRITE as a desired access to check
-  // if the |handle| has a write access.
-  ProcessHandle process = GetCurrentProcess();
-  HANDLE duped_handle;
-  BOOL success = ::DuplicateHandle(process, handle, process, &duped_handle,
-                                   FILE_MAP_WRITE, FALSE, 0);
-  if (success) {
-    BOOL rv = ::CloseHandle(duped_handle);
-    DCHECK(rv);
-  }
-
-  bool is_read_only = !success;
-  bool expected_read_only = mode == Mode::kReadOnly;
-
-  if (is_read_only != expected_read_only) {
-    DLOG(ERROR) << "File mapping handle has wrong access rights: it is"
-                << (is_read_only ? " " : " not ") << "read-only but it should"
-                << (expected_read_only ? " " : " not ") << "be";
-    return false;
-  }
-
-  return true;
-}
-
-PlatformSharedMemoryRegion::PlatformSharedMemoryRegion(
-    win::ScopedHandle handle,
-    Mode mode,
-    size_t size,
-    const UnguessableToken& guid)
-    : handle_(std::move(handle)), mode_(mode), size_(size), guid_(guid) {}
-
-}  // namespace subtle
-}  // namespace base

security/sandbox/chromium/base/memory/ref_counted.cc

@@ -4,9 +4,6 @@
 
 #include "base/memory/ref_counted.h"
 
-#include <limits>
-#include <type_traits>
-
 #include "base/threading/thread_collision_warner.h"
 
 namespace base {
@@ -35,35 +32,15 @@ RefCountedThreadSafeBase::~RefCountedThreadSafeBase() {
 }
 #endif
 
-// For security and correctness, we check the arithmetic on ref counts.
-//
-// In an attempt to avoid binary bloat (from inlining the `CHECK`), we define
-// these functions out-of-line. However, compilers are wily. Further testing may
-// show that `NOINLINE` helps or hurts.
-//
+// This is a security check. In 32-bit-archs, an attacker would run out of
+// address space after allocating at most 2^32 scoped_refptrs. This replicates
+// that boundary for 64-bit-archs.
 #if defined(ARCH_CPU_64_BITS)
 void RefCountedBase::AddRefImpl() const {
-  // An attacker could induce use-after-free bugs, and potentially exploit them,
-  // by creating so many references to a ref-counted object that the reference
-  // count overflows. On 32-bit architectures, there is not enough address space
-  // to succeed. But on 64-bit architectures, it might indeed be possible.
-  // Therefore, we can elide the check for arithmetic overflow on 32-bit, but we
-  // must check on 64-bit.
-  //
-  // Make sure the addition didn't wrap back around to 0. This form of check
-  // works because we assert that `ref_count_` is an unsigned integer type.
-  CHECK(++ref_count_ != 0);
-}
-
-void RefCountedBase::ReleaseImpl() const {
-  // Make sure the subtraction didn't wrap back around from 0 to the max value.
-  // That could cause memory leaks, and may induce application-semantic
-  // correctness or safety bugs. (E.g. what if we really needed that object to
-  // be destroyed at the right time?)
-  //
-  // Note that unlike with overflow, underflow could also happen on 32-bit
-  // architectures. Arguably, we should do this check on32-bit machines too.
-  CHECK(--ref_count_ != std::numeric_limits<decltype(ref_count_)>::max());
+  // Check if |ref_count_| overflow only on 64 bit archs since the number of
+  // objects may exceed 2^32.
+  // To avoid the binary size bloat, use non-inline function here.
+  CHECK(++ref_count_ > 0);
 }
 #endif
 

security/sandbox/chromium/base/memory/ref_counted.h

@@ -69,7 +69,7 @@ class BASE_EXPORT RefCountedBase {
 
   // Returns true if the object should self-delete.
   bool Release() const {
-    ReleaseImpl();
+    --ref_count_;
 
     // TODO(maruel): Add back once it doesn't assert 500 times/sec.
     // Current thread books the critical section "AddRelease"
@@ -126,10 +126,8 @@ class BASE_EXPORT RefCountedBase {
 
 #if defined(ARCH_CPU_64_BITS)
   void AddRefImpl() const;
-  void ReleaseImpl() const;
 #else
   void AddRefImpl() const { ++ref_count_; }
-  void ReleaseImpl() const { --ref_count_; }
 #endif
 
 #if DCHECK_IS_ON()
@@ -137,8 +135,6 @@ class BASE_EXPORT RefCountedBase {
 #endif
 
   mutable uint32_t ref_count_ = 0;
-  static_assert(std::is_unsigned<decltype(ref_count_)>::value,
-                "ref_count_ must be an unsigned type.");
 
 #if DCHECK_IS_ON()
   mutable bool needs_adopt_ref_ = false;
@@ -448,16 +444,6 @@ class RefCountedData
   ~RefCountedData() = default;
 };
 
-template <typename T>
-bool operator==(const RefCountedData<T>& lhs, const RefCountedData<T>& rhs) {
-  return lhs.data == rhs.data;
-}
-
-template <typename T>
-bool operator!=(const RefCountedData<T>& lhs, const RefCountedData<T>& rhs) {
-  return !(lhs == rhs);
-}
-
 }  // namespace base
 
 #endif  // BASE_MEMORY_REF_COUNTED_H_

security/sandbox/chromium/base/memory/scoped_refptr.h

@@ -25,17 +25,10 @@ class RefCounted;
 template <class, typename>
 class RefCountedThreadSafe;
 class SequencedTaskRunner;
-class WrappedPromise;
 
 template <typename T>
 scoped_refptr<T> AdoptRef(T* t);
 
-namespace internal {
-
-class BasePromise;
-
-}  // namespace internal
-
 namespace subtle {
 
 enum AdoptRefTag { kAdoptRefTag };
@@ -178,16 +171,8 @@ class scoped_refptr {
 
   constexpr scoped_refptr() = default;
 
-  // Allow implicit construction from nullptr.
-  constexpr scoped_refptr(std::nullptr_t) {}
-
-  // Constructs from a raw pointer. Note that this constructor allows implicit
-  // conversion from T* to scoped_refptr<T> which is strongly discouraged. If
-  // you are creating a new ref-counted object please use
-  // base::MakeRefCounted<T>() or base::WrapRefCounted<T>(). Otherwise you
-  // should move or copy construct from an existing scoped_refptr<T> to the
-  // ref-counted object.
-  scoped_refptr(T* p) : ptr_(p) {
+  // Constructs from raw pointer. constexpr if |p| is null.
+  constexpr scoped_refptr(T* p) : ptr_(p) {
     if (ptr_)
       AddRef(ptr_);
   }
@@ -236,11 +221,6 @@ class scoped_refptr {
     return ptr_;
   }
 
-  scoped_refptr& operator=(std::nullptr_t) {
-    reset();
-    return *this;
-  }
-
   scoped_refptr& operator=(T* p) { return *this = scoped_refptr(p); }
 
   // Unified assignment operator.
@@ -280,11 +260,6 @@ class scoped_refptr {
   friend scoped_refptr<U> base::AdoptRef(U*);
   friend class ::base::SequencedTaskRunner;
 
-  // Friend access so these classes can use the constructor below as part of a
-  // binary size optimization.
-  friend class ::base::internal::BasePromise;
-  friend class ::base::WrappedPromise;
-
   // Returns the owned pointer (if any), releasing ownership to the caller. The
   // caller is responsible for managing the lifetime of the reference.
   T* release();

security/sandbox/chromium/base/memory/shared_memory.h

@@ -0,0 +1,245 @@
+// Copyright (c) 2012 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef BASE_MEMORY_SHARED_MEMORY_H_
+#define BASE_MEMORY_SHARED_MEMORY_H_
+
+#include <stddef.h>
+
+#include <string>
+
+#include "base/base_export.h"
+#include "base/hash.h"
+#include "base/macros.h"
+#include "base/memory/shared_memory_handle.h"
+#include "base/process/process_handle.h"
+#include "base/strings/string16.h"
+#include "build/build_config.h"
+
+#if defined(OS_POSIX) || defined(OS_FUCHSIA)
+#include <stdio.h>
+#include <sys/types.h>
+#include <semaphore.h>
+#include "base/file_descriptor_posix.h"
+#include "base/files/file_util.h"
+#include "base/files/scoped_file.h"
+#endif
+
+#if defined(OS_WIN)
+#include "base/win/scoped_handle.h"
+#endif
+
+namespace base {
+
+class FilePath;
+
+// Options for creating a shared memory object.
+struct BASE_EXPORT SharedMemoryCreateOptions {
+#if !defined(OS_FUCHSIA)
+  // DEPRECATED (crbug.com/345734):
+  // If NULL, the object is anonymous.  This pointer is owned by the caller
+  // and must live through the call to Create().
+  const std::string* name_deprecated = nullptr;
+
+  // DEPRECATED (crbug.com/345734):
+  // If true, and the shared memory already exists, Create() will open the
+  // existing shared memory and ignore the size parameter.  If false,
+  // shared memory must not exist.  This flag is meaningless unless
+  // name_deprecated is non-NULL.
+  bool open_existing_deprecated = false;
+#endif
+
+  // Size of the shared memory object to be created.
+  // When opening an existing object, this has no effect.
+  size_t size = 0;
+
+  // If true, mappings might need to be made executable later.
+  bool executable = false;
+
+  // If true, the file can be shared read-only to a process.
+  bool share_read_only = false;
+};
+
+// Platform abstraction for shared memory.
+// SharedMemory consumes a SharedMemoryHandle [potentially one that it created]
+// to map a shared memory OS resource into the virtual address space of the
+// current process.
+class BASE_EXPORT SharedMemory {
+ public:
+  SharedMemory();
+
+#if defined(OS_WIN)
+  // Similar to the default constructor, except that this allows for
+  // calling LockDeprecated() to acquire the named mutex before either Create or
+  // Open are called on Windows.
+  explicit SharedMemory(const string16& name);
+#endif
+
+  // Create a new SharedMemory object from an existing, open
+  // shared memory file.
+  //
+  // WARNING: This does not reduce the OS-level permissions on the handle; it
+  // only affects how the SharedMemory will be mmapped. Use
+  // GetReadOnlyHandle to drop permissions. TODO(jln,jyasskin): DCHECK
+  // that |read_only| matches the permissions of the handle.
+  SharedMemory(const SharedMemoryHandle& handle, bool read_only);
+
+  // Closes any open files.
+  ~SharedMemory();
+
+  // Return true iff the given handle is valid (i.e. not the distingished
+  // invalid value; NULL for a HANDLE and -1 for a file descriptor)
+  static bool IsHandleValid(const SharedMemoryHandle& handle);
+
+  // Closes a shared memory handle.
+  static void CloseHandle(const SharedMemoryHandle& handle);
+
+  // Returns the maximum number of handles that can be open at once per process.
+  static size_t GetHandleLimit();
+
+  // Duplicates The underlying OS primitive. Returns an invalid handle on
+  // failure. The caller is responsible for destroying the duplicated OS
+  // primitive.
+  static SharedMemoryHandle DuplicateHandle(const SharedMemoryHandle& handle);
+
+#if defined(OS_POSIX) && !(defined(OS_MACOSX) && !defined(OS_IOS))
+  // This method requires that the SharedMemoryHandle is backed by a POSIX fd.
+  static int GetFdFromSharedMemoryHandle(const SharedMemoryHandle& handle);
+#endif
+
+  // Creates a shared memory object as described by the options struct.
+  // Returns true on success and false on failure.
+  bool Create(const SharedMemoryCreateOptions& options);
+
+  // Creates and maps an anonymous shared memory segment of size size.
+  // Returns true on success and false on failure.
+  bool CreateAndMapAnonymous(size_t size);
+
+  // Creates an anonymous shared memory segment of size size.
+  // Returns true on success and false on failure.
+  bool CreateAnonymous(size_t size) {
+    SharedMemoryCreateOptions options;
+    options.size = size;
+    return Create(options);
+  }
+
+#if (!defined(OS_MACOSX) || defined(OS_IOS)) && !defined(OS_FUCHSIA)
+  // DEPRECATED (crbug.com/345734):
+  // Creates or opens a shared memory segment based on a name.
+  // If open_existing is true, and the shared memory already exists,
+  // opens the existing shared memory and ignores the size parameter.
+  // If open_existing is false, shared memory must not exist.
+  // size is the size of the block to be created.
+  // Returns true on success, false on failure.
+  bool CreateNamedDeprecated(
+      const std::string& name, bool open_existing, size_t size) {
+    SharedMemoryCreateOptions options;
+    options.name_deprecated = &name;
+    options.open_existing_deprecated = open_existing;
+    options.size = size;
+    return Create(options);
+  }
+
+  // Deletes resources associated with a shared memory segment based on name.
+  // Not all platforms require this call.
+  bool Delete(const std::string& name);
+
+  // Opens a shared memory segment based on a name.
+  // If read_only is true, opens for read-only access.
+  // Returns true on success, false on failure.
+  bool Open(const std::string& name, bool read_only);
+#endif  // !defined(OS_MACOSX) || defined(OS_IOS)
+
+  // Maps the shared memory into the caller's address space.
+  // Returns true on success, false otherwise.  The memory address
+  // is accessed via the memory() accessor.  The mapped address is guaranteed to
+  // have an alignment of at least MAP_MINIMUM_ALIGNMENT. This method will fail
+  // if this object is currently mapped.
+  bool Map(size_t bytes) {
+    return MapAt(0, bytes);
+  }
+
+  // Same as above, but with |offset| to specify from begining of the shared
+  // memory block to map.
+  // |offset| must be alignent to value of |SysInfo::VMAllocationGranularity()|.
+  bool MapAt(off_t offset, size_t bytes);
+  enum { MAP_MINIMUM_ALIGNMENT = 32 };
+
+  // Unmaps the shared memory from the caller's address space.
+  // Returns true if successful; returns false on error or if the
+  // memory is not mapped.
+  bool Unmap();
+
+  // The size requested when the map is first created.
+  size_t requested_size() const { return requested_size_; }
+
+  // The actual size of the mapped memory (may be larger than requested).
+  size_t mapped_size() const { return mapped_size_; }
+
+  // Gets a pointer to the opened memory space if it has been
+  // Mapped via Map().  Returns NULL if it is not mapped.
+  void* memory() const { return memory_; }
+
+  // Returns the underlying OS handle for this segment.
+  // Use of this handle for anything other than an opaque
+  // identifier is not portable.
+  SharedMemoryHandle handle() const;
+
+  // Returns the underlying OS handle for this segment. The caller takes
+  // ownership of the handle and memory is unmapped. This is equivalent to
+  // duplicating the handle and then calling Unmap() and Close() on this object,
+  // without the overhead of duplicating the handle.
+  SharedMemoryHandle TakeHandle();
+
+  // Closes the open shared memory segment. The memory will remain mapped if
+  // it was previously mapped.
+  // It is safe to call Close repeatedly.
+  void Close();
+
+  // Returns a read-only handle to this shared memory region. The caller takes
+  // ownership of the handle. For POSIX handles, CHECK-fails if the region
+  // wasn't Created or Opened with share_read_only=true, which is required to
+  // make the handle read-only. When the handle is passed to the IPC subsystem,
+  // that takes ownership of the handle. As such, it's not valid to pass the
+  // sample handle to the IPC subsystem twice. Returns an invalid handle on
+  // failure.
+  SharedMemoryHandle GetReadOnlyHandle() const;
+
+  // Returns an ID for the mapped region. This is ID of the SharedMemoryHandle
+  // that was mapped. The ID is valid even after the SharedMemoryHandle is
+  // Closed, as long as the region is not unmapped.
+  const UnguessableToken& mapped_id() const { return mapped_id_; }
+
+ private:
+#if defined(OS_POSIX) && !defined(OS_NACL) && !defined(OS_ANDROID) && \
+    (!defined(OS_MACOSX) || defined(OS_IOS))
+  bool FilePathForMemoryName(const std::string& mem_name, FilePath* path);
+#endif
+
+#if defined(OS_WIN)
+  // If true indicates this came from an external source so needs extra checks
+  // before being mapped.
+  bool external_section_ = false;
+  string16 name_;
+#elif !defined(OS_ANDROID) && !defined(OS_FUCHSIA)
+  // If valid, points to the same memory region as shm_, but with readonly
+  // permissions.
+  SharedMemoryHandle readonly_shm_;
+#endif
+
+  // The OS primitive that backs the shared memory region.
+  SharedMemoryHandle shm_;
+
+  size_t mapped_size_ = 0;
+  void* memory_ = nullptr;
+  bool read_only_ = false;
+  size_t requested_size_ = 0;
+  base::UnguessableToken mapped_id_;
+
+  DISALLOW_COPY_AND_ASSIGN(SharedMemory);
+};
+
+}  // namespace base
+
+#endif  // BASE_MEMORY_SHARED_MEMORY_H_

security/sandbox/chromium/base/memory/shared_memory_handle.cc

@@ -0,0 +1,23 @@
+// Copyright 2017 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "base/memory/shared_memory_handle.h"
+
+namespace base {
+
+SharedMemoryHandle::SharedMemoryHandle(const SharedMemoryHandle& handle) =
+    default;
+
+SharedMemoryHandle& SharedMemoryHandle::operator=(
+    const SharedMemoryHandle& handle) = default;
+
+base::UnguessableToken SharedMemoryHandle::GetGUID() const {
+  return guid_;
+}
+
+size_t SharedMemoryHandle::GetSize() const {
+  return size_;
+}
+
+}  // namespace base

security/sandbox/chromium/base/memory/shared_memory_handle.h

@@ -0,0 +1,220 @@
+// Copyright 2015 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef BASE_MEMORY_SHARED_MEMORY_HANDLE_H_
+#define BASE_MEMORY_SHARED_MEMORY_HANDLE_H_
+
+#include <stddef.h>
+
+#include "base/unguessable_token.h"
+#include "build/build_config.h"
+
+#if defined(OS_WIN)
+#include "base/process/process_handle.h"
+#include "base/win/windows_types.h"
+#elif defined(OS_MACOSX) && !defined(OS_IOS)
+#include <mach/mach.h>
+#include "base/base_export.h"
+#include "base/macros.h"
+#include "base/process/process_handle.h"
+#elif defined(OS_POSIX)
+#include <sys/types.h>
+#include "base/file_descriptor_posix.h"
+#elif defined(OS_FUCHSIA)
+#include <zircon/types.h>
+#endif
+
+namespace base {
+
+// SharedMemoryHandle is the smallest possible IPC-transportable "reference" to
+// a shared memory OS resource. A "reference" can be consumed exactly once [by
+// base::SharedMemory] to map the shared memory OS resource into the virtual
+// address space of the current process.
+// TODO(erikchen): This class should have strong ownership semantics to prevent
+// leaks of the underlying OS resource. https://crbug.com/640840.
+class BASE_EXPORT SharedMemoryHandle {
+ public:
+  // The default constructor returns an invalid SharedMemoryHandle.
+  SharedMemoryHandle();
+
+  // Standard copy constructor. The new instance shares the underlying OS
+  // primitives.
+  SharedMemoryHandle(const SharedMemoryHandle& handle);
+
+  // Standard assignment operator. The updated instance shares the underlying
+  // OS primitives.
+  SharedMemoryHandle& operator=(const SharedMemoryHandle& handle);
+
+  // Closes the underlying OS resource.
+  // The fact that this method needs to be "const" is an artifact of the
+  // original interface for base::SharedMemory::CloseHandle.
+  // TODO(erikchen): This doesn't clear the underlying reference, which seems
+  // like a bug, but is how this class has always worked. Fix this:
+  // https://crbug.com/716072.
+  void Close() const;
+
+  // Whether ownership of the underlying OS resource is implicitly passed to
+  // the IPC subsystem during serialization.
+  void SetOwnershipPassesToIPC(bool ownership_passes);
+  bool OwnershipPassesToIPC() const;
+
+  // Whether the underlying OS resource is valid.
+  bool IsValid() const;
+
+  // Duplicates the underlying OS resource. Using the return value as a
+  // parameter to an IPC message will cause the IPC subsystem to consume the OS
+  // resource.
+  SharedMemoryHandle Duplicate() const;
+
+  // Uniques identifies the shared memory region that the underlying OS resource
+  // points to. Multiple SharedMemoryHandles that point to the same shared
+  // memory region will have the same GUID. Preserved across IPC.
+  base::UnguessableToken GetGUID() const;
+
+  // Returns the size of the memory region that SharedMemoryHandle points to.
+  size_t GetSize() const;
+
+#if defined(OS_WIN)
+  // Takes implicit ownership of |h|.
+  // |guid| uniquely identifies the shared memory region pointed to by the
+  // underlying OS resource. If the HANDLE is associated with another
+  // SharedMemoryHandle, the caller must pass the |guid| of that
+  // SharedMemoryHandle. Otherwise, the caller should generate a new
+  // UnguessableToken.
+  // Passing the wrong |size| has no immediate consequence, but may cause errors
+  // when trying to map the SharedMemoryHandle at a later point in time.
+  SharedMemoryHandle(HANDLE h, size_t size, const base::UnguessableToken& guid);
+  HANDLE GetHandle() const;
+#elif defined(OS_FUCHSIA)
+  // Takes implicit ownership of |h|.
+  // |guid| uniquely identifies the shared memory region pointed to by the
+  // underlying OS resource. If the zx_handle_t is associated with another
+  // SharedMemoryHandle, the caller must pass the |guid| of that
+  // SharedMemoryHandle. Otherwise, the caller should generate a new
+  // UnguessableToken.
+  // Passing the wrong |size| has no immediate consequence, but may cause errors
+  // when trying to map the SharedMemoryHandle at a later point in time.
+  SharedMemoryHandle(zx_handle_t h,
+                     size_t size,
+                     const base::UnguessableToken& guid);
+  zx_handle_t GetHandle() const;
+#elif defined(OS_MACOSX) && !defined(OS_IOS)
+  // Makes a Mach-based SharedMemoryHandle of the given size. On error,
+  // subsequent calls to IsValid() return false.
+  // Passing the wrong |size| has no immediate consequence, but may cause errors
+  // when trying to map the SharedMemoryHandle at a later point in time.
+  SharedMemoryHandle(mach_vm_size_t size, const base::UnguessableToken& guid);
+
+  // Makes a Mach-based SharedMemoryHandle from |memory_object|, a named entry
+  // in the current task. The memory region has size |size|.
+  // Passing the wrong |size| has no immediate consequence, but may cause errors
+  // when trying to map the SharedMemoryHandle at a later point in time.
+  SharedMemoryHandle(mach_port_t memory_object,
+                     mach_vm_size_t size,
+                     const base::UnguessableToken& guid);
+
+  // Exposed so that the SharedMemoryHandle can be transported between
+  // processes.
+  mach_port_t GetMemoryObject() const;
+
+  // The SharedMemoryHandle must be valid.
+  // Returns whether the SharedMemoryHandle was successfully mapped into memory.
+  // On success, |memory| is an output variable that contains the start of the
+  // mapped memory.
+  bool MapAt(off_t offset, size_t bytes, void** memory, bool read_only);
+#elif defined(OS_POSIX)
+  // Creates a SharedMemoryHandle from an |fd| supplied from an external
+  // service.
+  // Passing the wrong |size| has no immediate consequence, but may cause errors
+  // when trying to map the SharedMemoryHandle at a later point in time.
+  static SharedMemoryHandle ImportHandle(int fd, size_t size);
+
+  // Returns the underlying OS resource.
+  int GetHandle() const;
+
+  // Invalidates [but doesn't close] the underlying OS resource. This will leak
+  // unless the caller is careful.
+  int Release();
+#endif
+
+#if defined(OS_ANDROID)
+  // Marks the current file descriptor as read-only, for the purpose of
+  // mapping. This is independent of the region's read-only status.
+  void SetReadOnly() { read_only_ = true; }
+
+  // Returns true iff the descriptor is to be used for read-only
+  // mappings.
+  bool IsReadOnly() const { return read_only_; }
+
+  // Returns true iff the corresponding region is read-only.
+  bool IsRegionReadOnly() const;
+
+  // Try to set the region read-only. This will fail any future attempt
+  // at read-write mapping.
+  bool SetRegionReadOnly() const;
+#endif
+
+#if defined(OS_POSIX) && !(defined(OS_MACOSX) && !defined(OS_IOS))
+  // Constructs a SharedMemoryHandle backed by a FileDescriptor. The newly
+  // created instance has the same ownership semantics as base::FileDescriptor.
+  // This typically means that the SharedMemoryHandle takes ownership of the
+  // |fd| if |auto_close| is true. Unfortunately, it's common for existing code
+  // to make shallow copies of SharedMemoryHandle, and the one that is finally
+  // passed into a base::SharedMemory is the one that "consumes" the fd.
+  //
+  // |guid| uniquely identifies the shared memory region pointed to by the
+  // underlying OS resource. If |file_descriptor| is associated with another
+  // SharedMemoryHandle, the caller must pass the |guid| of that
+  // SharedMemoryHandle. Otherwise, the caller should generate a new
+  // UnguessableToken.
+  // Passing the wrong |size| has no immediate consequence, but may cause errors
+  // when trying to map the SharedMemoryHandle at a later point in time.
+  SharedMemoryHandle(const base::FileDescriptor& file_descriptor,
+                     size_t size,
+                     const base::UnguessableToken& guid);
+#endif
+
+ private:
+#if defined(OS_WIN)
+  HANDLE handle_ = nullptr;
+
+  // Whether passing this object as a parameter to an IPC message passes
+  // ownership of |handle_| to the IPC stack. This is meant to mimic the
+  // behavior of the |auto_close| parameter of FileDescriptor. This member only
+  // affects attachment-brokered SharedMemoryHandles.
+  // Defaults to |false|.
+  bool ownership_passes_to_ipc_ = false;
+#elif defined(OS_FUCHSIA)
+  zx_handle_t handle_ = ZX_HANDLE_INVALID;
+  bool ownership_passes_to_ipc_ = false;
+#elif defined(OS_MACOSX) && !defined(OS_IOS)
+  friend class SharedMemory;
+  friend bool CheckReadOnlySharedMemoryHandleForTesting(
+      SharedMemoryHandle handle);
+
+  mach_port_t memory_object_ = MACH_PORT_NULL;
+
+  // Whether passing this object as a parameter to an IPC message passes
+  // ownership of |memory_object_| to the IPC stack. This is meant to mimic
+  // the behavior of the |auto_close| parameter of FileDescriptor.
+  // Defaults to |false|.
+  bool ownership_passes_to_ipc_ = false;
+#elif defined(OS_ANDROID)
+  friend class SharedMemory;
+
+  FileDescriptor file_descriptor_;
+  bool read_only_ = false;
+#elif defined(OS_POSIX)
+  FileDescriptor file_descriptor_;
+#endif
+
+  base::UnguessableToken guid_;
+
+  // The size of the region referenced by the SharedMemoryHandle.
+  size_t size_ = 0;
+};
+
+}  // namespace base
+
+#endif  // BASE_MEMORY_SHARED_MEMORY_HANDLE_H_

security/sandbox/chromium/base/memory/shared_memory_handle_win.cc

@@ -0,0 +1,55 @@
+// Copyright 2015 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "base/memory/shared_memory_handle.h"
+
+#include "base/logging.h"
+#include "base/unguessable_token.h"
+
+#include <windows.h>
+
+namespace base {
+
+SharedMemoryHandle::SharedMemoryHandle() {}
+
+SharedMemoryHandle::SharedMemoryHandle(HANDLE h,
+                                       size_t size,
+                                       const base::UnguessableToken& guid)
+    : handle_(h), guid_(guid), size_(size) {}
+
+void SharedMemoryHandle::Close() const {
+  DCHECK(handle_ != nullptr);
+  ::CloseHandle(handle_);
+}
+
+bool SharedMemoryHandle::IsValid() const {
+  return handle_ != nullptr;
+}
+
+SharedMemoryHandle SharedMemoryHandle::Duplicate() const {
+  HANDLE duped_handle;
+  ProcessHandle process = GetCurrentProcess();
+  BOOL success = ::DuplicateHandle(process, handle_, process, &duped_handle, 0,
+                                   FALSE, DUPLICATE_SAME_ACCESS);
+  if (!success)
+    return SharedMemoryHandle();
+
+  base::SharedMemoryHandle handle(duped_handle, GetSize(), GetGUID());
+  handle.SetOwnershipPassesToIPC(true);
+  return handle;
+}
+
+HANDLE SharedMemoryHandle::GetHandle() const {
+  return handle_;
+}
+
+void SharedMemoryHandle::SetOwnershipPassesToIPC(bool ownership_passes) {
+  ownership_passes_to_ipc_ = ownership_passes;
+}
+
+bool SharedMemoryHandle::OwnershipPassesToIPC() const {
+  return ownership_passes_to_ipc_;
+}
+
+}  // namespace base

security/sandbox/chromium/base/memory/shared_memory_mapping.cc

@@ -1,115 +0,0 @@
-// Copyright 2018 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#include "base/memory/shared_memory_mapping.h"
-
-#include <utility>
-
-#include "base/logging.h"
-#include "base/memory/shared_memory_tracker.h"
-#include "base/unguessable_token.h"
-#include "build/build_config.h"
-
-#if defined(OS_POSIX)
-#include <sys/mman.h>
-#endif
-
-#if defined(OS_WIN)
-#include <aclapi.h>
-#endif
-
-#if defined(OS_MACOSX) && !defined(OS_IOS)
-#include <mach/mach_vm.h>
-#include "base/mac/mach_logging.h"
-#endif
-
-#if defined(OS_FUCHSIA)
-#include <lib/zx/vmar.h>
-#include "base/fuchsia/fuchsia_logging.h"
-#endif
-
-namespace base {
-
-SharedMemoryMapping::SharedMemoryMapping() = default;
-
-SharedMemoryMapping::SharedMemoryMapping(SharedMemoryMapping&& mapping) noexcept
-    : memory_(mapping.memory_),
-      size_(mapping.size_),
-      mapped_size_(mapping.mapped_size_),
-      guid_(mapping.guid_) {
-  mapping.memory_ = nullptr;
-}
-
-SharedMemoryMapping& SharedMemoryMapping::operator=(
-    SharedMemoryMapping&& mapping) noexcept {
-  Unmap();
-  memory_ = mapping.memory_;
-  size_ = mapping.size_;
-  mapped_size_ = mapping.mapped_size_;
-  guid_ = mapping.guid_;
-  mapping.memory_ = nullptr;
-  return *this;
-}
-
-SharedMemoryMapping::~SharedMemoryMapping() {
-  Unmap();
-}
-
-SharedMemoryMapping::SharedMemoryMapping(void* memory,
-                                         size_t size,
-                                         size_t mapped_size,
-                                         const UnguessableToken& guid)
-    : memory_(memory), size_(size), mapped_size_(mapped_size), guid_(guid) {
-  SharedMemoryTracker::GetInstance()->IncrementMemoryUsage(*this);
-}
-
-void SharedMemoryMapping::Unmap() {
-  if (!IsValid())
-    return;
-
-  SharedMemoryTracker::GetInstance()->DecrementMemoryUsage(*this);
-#if defined(OS_WIN)
-  if (!UnmapViewOfFile(memory_))
-    DPLOG(ERROR) << "UnmapViewOfFile";
-#elif defined(OS_FUCHSIA)
-  uintptr_t addr = reinterpret_cast<uintptr_t>(memory_);
-  zx_status_t status = zx::vmar::root_self()->unmap(addr, mapped_size_);
-  if (status != ZX_OK)
-    ZX_DLOG(ERROR, status) << "zx_vmar_unmap";
-#elif defined(OS_MACOSX) && !defined(OS_IOS)
-  kern_return_t kr = mach_vm_deallocate(
-      mach_task_self(), reinterpret_cast<mach_vm_address_t>(memory_),
-      mapped_size_);
-  MACH_DLOG_IF(ERROR, kr != KERN_SUCCESS, kr) << "mach_vm_deallocate";
-#else
-  if (munmap(memory_, mapped_size_) < 0)
-    DPLOG(ERROR) << "munmap";
-#endif
-}
-
-ReadOnlySharedMemoryMapping::ReadOnlySharedMemoryMapping() = default;
-ReadOnlySharedMemoryMapping::ReadOnlySharedMemoryMapping(
-    ReadOnlySharedMemoryMapping&&) noexcept = default;
-ReadOnlySharedMemoryMapping& ReadOnlySharedMemoryMapping::operator=(
-    ReadOnlySharedMemoryMapping&&) noexcept = default;
-ReadOnlySharedMemoryMapping::ReadOnlySharedMemoryMapping(
-    void* address,
-    size_t size,
-    size_t mapped_size,
-    const UnguessableToken& guid)
-    : SharedMemoryMapping(address, size, mapped_size, guid) {}
-
-WritableSharedMemoryMapping::WritableSharedMemoryMapping() = default;
-WritableSharedMemoryMapping::WritableSharedMemoryMapping(
-    WritableSharedMemoryMapping&&) noexcept = default;
-WritableSharedMemoryMapping& WritableSharedMemoryMapping::operator=(
-    WritableSharedMemoryMapping&&) noexcept = default;
-WritableSharedMemoryMapping::WritableSharedMemoryMapping(
-    void* address,
-    size_t size,
-    size_t mapped_size,
-    const UnguessableToken& guid)
-    : SharedMemoryMapping(address, size, mapped_size, guid) {}
-
-}  // namespace base

security/sandbox/chromium/base/memory/shared_memory_mapping.h

@@ -1,252 +0,0 @@
-// Copyright 2018 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#ifndef BASE_MEMORY_SHARED_MEMORY_MAPPING_H_
-#define BASE_MEMORY_SHARED_MEMORY_MAPPING_H_
-
-#include <cstddef>
-#include <type_traits>
-
-#include "base/containers/buffer_iterator.h"
-#include "base/containers/span.h"
-#include "base/macros.h"
-#include "base/unguessable_token.h"
-
-namespace base {
-
-namespace subtle {
-class PlatformSharedMemoryRegion;
-}  // namespace subtle
-
-// Base class for scoped handles to a shared memory mapping created from a
-// shared memory region. Created shared memory mappings remain valid even if the
-// creator region is transferred or destroyed.
-//
-// Each mapping has an UnguessableToken that identifies the shared memory region
-// it was created from. This is used for memory metrics, to avoid overcounting
-// shared memory.
-class BASE_EXPORT SharedMemoryMapping {
- public:
-  // Default constructor initializes an invalid instance.
-  SharedMemoryMapping();
-
-  // Move operations are allowed.
-  SharedMemoryMapping(SharedMemoryMapping&& mapping) noexcept;
-  SharedMemoryMapping& operator=(SharedMemoryMapping&& mapping) noexcept;
-
-  // Unmaps the region if the mapping is valid.
-  virtual ~SharedMemoryMapping();
-
-  // Returns true iff the mapping is valid. False means there is no
-  // corresponding area of memory.
-  bool IsValid() const { return memory_ != nullptr; }
-
-  // Returns the logical size of the mapping in bytes. This is precisely the
-  // size requested by whoever created the mapping, and it is always less than
-  // or equal to |mapped_size()|. This is undefined for invalid instances.
-  size_t size() const {
-    DCHECK(IsValid());
-    return size_;
-  }
-
-  // Returns the actual size of the mapping in bytes. This is always at least
-  // as large as |size()| but may be larger due to platform mapping alignment
-  // constraints. This is undefined for invalid instances.
-  size_t mapped_size() const {
-    DCHECK(IsValid());
-    return mapped_size_;
-  }
-
-  // Returns 128-bit GUID of the region this mapping belongs to.
-  const UnguessableToken& guid() const {
-    DCHECK(IsValid());
-    return guid_;
-  }
-
- protected:
-  SharedMemoryMapping(void* address,
-                      size_t size,
-                      size_t mapped_size,
-                      const UnguessableToken& guid);
-  void* raw_memory_ptr() const { return memory_; }
-
- private:
-  friend class SharedMemoryTracker;
-
-  void Unmap();
-
-  void* memory_ = nullptr;
-  size_t size_ = 0;
-  size_t mapped_size_ = 0;
-  UnguessableToken guid_;
-
-  DISALLOW_COPY_AND_ASSIGN(SharedMemoryMapping);
-};
-
-// Class modeling a read-only mapping of a shared memory region into the
-// current process' address space. This is created by ReadOnlySharedMemoryRegion
-// instances.
-class BASE_EXPORT ReadOnlySharedMemoryMapping : public SharedMemoryMapping {
- public:
-  // Default constructor initializes an invalid instance.
-  ReadOnlySharedMemoryMapping();
-
-  // Move operations are allowed.
-  ReadOnlySharedMemoryMapping(ReadOnlySharedMemoryMapping&&) noexcept;
-  ReadOnlySharedMemoryMapping& operator=(
-      ReadOnlySharedMemoryMapping&&) noexcept;
-
-  // Returns the base address of the mapping. This is read-only memory. This is
-  // page-aligned. This is nullptr for invalid instances.
-  const void* memory() const { return raw_memory_ptr(); }
-
-  // Returns a pointer to a page-aligned const T if the mapping is valid and
-  // large enough to contain a T, or nullptr otherwise.
-  template <typename T>
-  const T* GetMemoryAs() const {
-    static_assert(std::is_trivially_copyable<T>::value,
-                  "Copying non-trivially-copyable object across memory spaces "
-                  "is dangerous");
-    if (!IsValid())
-      return nullptr;
-    if (sizeof(T) > size())
-      return nullptr;
-    return static_cast<const T*>(raw_memory_ptr());
-  }
-
-  // Returns a span of const T. The number of elements is autodeduced from the
-  // size of the shared memory mapping. The number of elements may be
-  // autodeduced as zero, i.e. the mapping is invalid or the size of the mapping
-  // isn't large enough to contain even one T: in that case, an empty span
-  // will be returned. The first element, if any, is guaranteed to be
-  // page-aligned.
-  template <typename T>
-  span<const T> GetMemoryAsSpan() const {
-    static_assert(std::is_trivially_copyable<T>::value,
-                  "Copying non-trivially-copyable object across memory spaces "
-                  "is dangerous");
-    if (!IsValid())
-      return span<const T>();
-    size_t count = size() / sizeof(T);
-    return GetMemoryAsSpan<T>(count);
-  }
-
-  // Returns a span of const T with |count| elements if the mapping is valid and
-  // large enough to contain |count| elements, or an empty span otherwise. The
-  // first element, if any, is guaranteed to be page-aligned.
-  template <typename T>
-  span<const T> GetMemoryAsSpan(size_t count) const {
-    static_assert(std::is_trivially_copyable<T>::value,
-                  "Copying non-trivially-copyable object across memory spaces "
-                  "is dangerous");
-    if (!IsValid())
-      return span<const T>();
-    if (size() / sizeof(T) < count)
-      return span<const T>();
-    return span<const T>(static_cast<const T*>(raw_memory_ptr()), count);
-  }
-
-  // Returns a BufferIterator of const T.
-  template <typename T>
-  BufferIterator<const T> GetMemoryAsBufferIterator() const {
-    return BufferIterator<const T>(GetMemoryAsSpan<T>());
-  }
-
- private:
-  friend class ReadOnlySharedMemoryRegion;
-  ReadOnlySharedMemoryMapping(void* address,
-                              size_t size,
-                              size_t mapped_size,
-                              const UnguessableToken& guid);
-
-  DISALLOW_COPY_AND_ASSIGN(ReadOnlySharedMemoryMapping);
-};
-
-// Class modeling a writable mapping of a shared memory region into the
-// current process' address space. This is created by *SharedMemoryRegion
-// instances.
-class BASE_EXPORT WritableSharedMemoryMapping : public SharedMemoryMapping {
- public:
-  // Default constructor initializes an invalid instance.
-  WritableSharedMemoryMapping();
-
-  // Move operations are allowed.
-  WritableSharedMemoryMapping(WritableSharedMemoryMapping&&) noexcept;
-  WritableSharedMemoryMapping& operator=(
-      WritableSharedMemoryMapping&&) noexcept;
-
-  // Returns the base address of the mapping. This is writable memory. This is
-  // page-aligned. This is nullptr for invalid instances.
-  void* memory() const { return raw_memory_ptr(); }
-
-  // Returns a pointer to a page-aligned T if the mapping is valid and large
-  // enough to contain a T, or nullptr otherwise.
-  template <typename T>
-  T* GetMemoryAs() const {
-    static_assert(std::is_trivially_copyable<T>::value,
-                  "Copying non-trivially-copyable object across memory spaces "
-                  "is dangerous");
-    if (!IsValid())
-      return nullptr;
-    if (sizeof(T) > size())
-      return nullptr;
-    return static_cast<T*>(raw_memory_ptr());
-  }
-
-  // Returns a span of T. The number of elements is autodeduced from the size of
-  // the shared memory mapping. The number of elements may be autodeduced as
-  // zero, i.e. the mapping is invalid or the size of the mapping isn't large
-  // enough to contain even one T: in that case, an empty span will be returned.
-  // The first element, if any, is guaranteed to be page-aligned.
-  template <typename T>
-  span<T> GetMemoryAsSpan() const {
-    static_assert(std::is_trivially_copyable<T>::value,
-                  "Copying non-trivially-copyable object across memory spaces "
-                  "is dangerous");
-    if (!IsValid())
-      return span<T>();
-    size_t count = size() / sizeof(T);
-    return GetMemoryAsSpan<T>(count);
-  }
-
-  // Returns a span of T with |count| elements if the mapping is valid and large
-  // enough to contain |count| elements, or an empty span otherwise. The first
-  // element, if any, is guaranteed to be page-aligned.
-  template <typename T>
-  span<T> GetMemoryAsSpan(size_t count) const {
-    static_assert(std::is_trivially_copyable<T>::value,
-                  "Copying non-trivially-copyable object across memory spaces "
-                  "is dangerous");
-    if (!IsValid())
-      return span<T>();
-    if (size() / sizeof(T) < count)
-      return span<T>();
-    return span<T>(static_cast<T*>(raw_memory_ptr()), count);
-  }
-
-  // Returns a BufferIterator of T.
-  template <typename T>
-  BufferIterator<T> GetMemoryAsBufferIterator() {
-    return BufferIterator<T>(GetMemoryAsSpan<T>());
-  }
-
- private:
-  friend WritableSharedMemoryMapping MapAtForTesting(
-      subtle::PlatformSharedMemoryRegion* region,
-      off_t offset,
-      size_t size);
-  friend class ReadOnlySharedMemoryRegion;
-  friend class WritableSharedMemoryRegion;
-  friend class UnsafeSharedMemoryRegion;
-  WritableSharedMemoryMapping(void* address,
-                              size_t size,
-                              size_t mapped_size,
-                              const UnguessableToken& guid);
-
-  DISALLOW_COPY_AND_ASSIGN(WritableSharedMemoryMapping);
-};
-
-}  // namespace base
-
-#endif  // BASE_MEMORY_SHARED_MEMORY_MAPPING_H_

security/sandbox/chromium/base/memory/shared_memory_win.cc

@@ -0,0 +1,388 @@
+// Copyright (c) 2011 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "base/memory/shared_memory.h"
+
+#include <aclapi.h>
+#include <stddef.h>
+#include <stdint.h>
+
+#include "base/allocator/partition_allocator/page_allocator.h"
+#include "base/logging.h"
+#include "base/memory/shared_memory_tracker.h"
+#include "base/metrics/histogram_functions.h"
+#include "base/metrics/histogram_macros.h"
+#include "base/rand_util.h"
+#include "base/strings/string_util.h"
+#include "base/strings/stringprintf.h"
+#include "base/strings/utf_string_conversions.h"
+#include "base/unguessable_token.h"
+#include "base/win/windows_version.h"
+
+namespace base {
+namespace {
+
+// Errors that can occur during Shared Memory construction.
+// These match tools/metrics/histograms/histograms.xml.
+// This enum is append-only.
+enum CreateError {
+  SUCCESS = 0,
+  SIZE_ZERO = 1,
+  SIZE_TOO_LARGE = 2,
+  INITIALIZE_ACL_FAILURE = 3,
+  INITIALIZE_SECURITY_DESC_FAILURE = 4,
+  SET_SECURITY_DESC_FAILURE = 5,
+  CREATE_FILE_MAPPING_FAILURE = 6,
+  REDUCE_PERMISSIONS_FAILURE = 7,
+  ALREADY_EXISTS = 8,
+  CREATE_ERROR_LAST = ALREADY_EXISTS
+};
+
+// Emits UMA metrics about encountered errors. Pass zero (0) for |winerror|
+// if there is no associated Windows error.
+void LogError(CreateError error, DWORD winerror) {
+  UMA_HISTOGRAM_ENUMERATION("SharedMemory.CreateError", error,
+                            CREATE_ERROR_LAST + 1);
+  static_assert(ERROR_SUCCESS == 0, "Windows error code changed!");
+  if (winerror != ERROR_SUCCESS)
+    UmaHistogramSparse("SharedMemory.CreateWinError", winerror);
+}
+
+typedef enum _SECTION_INFORMATION_CLASS {
+  SectionBasicInformation,
+} SECTION_INFORMATION_CLASS;
+
+typedef struct _SECTION_BASIC_INFORMATION {
+  PVOID BaseAddress;
+  ULONG Attributes;
+  LARGE_INTEGER Size;
+} SECTION_BASIC_INFORMATION, *PSECTION_BASIC_INFORMATION;
+
+typedef ULONG(__stdcall* NtQuerySectionType)(
+    HANDLE SectionHandle,
+    SECTION_INFORMATION_CLASS SectionInformationClass,
+    PVOID SectionInformation,
+    ULONG SectionInformationLength,
+    PULONG ResultLength);
+
+// Returns the length of the memory section starting at the supplied address.
+size_t GetMemorySectionSize(void* address) {
+  MEMORY_BASIC_INFORMATION memory_info;
+  if (!::VirtualQuery(address, &memory_info, sizeof(memory_info)))
+    return 0;
+  return memory_info.RegionSize - (static_cast<char*>(address) -
+         static_cast<char*>(memory_info.AllocationBase));
+}
+
+// Checks if the section object is safe to map. At the moment this just means
+// it's not an image section.
+bool IsSectionSafeToMap(HANDLE handle) {
+  static NtQuerySectionType nt_query_section_func;
+  if (!nt_query_section_func) {
+    nt_query_section_func = reinterpret_cast<NtQuerySectionType>(
+        ::GetProcAddress(::GetModuleHandle(L"ntdll.dll"), "NtQuerySection"));
+    DCHECK(nt_query_section_func);
+  }
+
+  // The handle must have SECTION_QUERY access for this to succeed.
+  SECTION_BASIC_INFORMATION basic_information = {};
+  ULONG status =
+      nt_query_section_func(handle, SectionBasicInformation, &basic_information,
+                            sizeof(basic_information), nullptr);
+  if (status)
+    return false;
+  return (basic_information.Attributes & SEC_IMAGE) != SEC_IMAGE;
+}
+
+// Returns a HANDLE on success and |nullptr| on failure.
+// This function is similar to CreateFileMapping, but removes the permissions
+// WRITE_DAC, WRITE_OWNER, READ_CONTROL, and DELETE.
+//
+// A newly created file mapping has two sets of permissions. It has access
+// control permissions (WRITE_DAC, WRITE_OWNER, READ_CONTROL, and DELETE) and
+// file permissions (FILE_MAP_READ, FILE_MAP_WRITE, etc.). ::DuplicateHandle()
+// with the parameter DUPLICATE_SAME_ACCESS copies both sets of permissions.
+//
+// The Chrome sandbox prevents HANDLEs with the WRITE_DAC permission from being
+// duplicated into unprivileged processes. But the only way to copy file
+// permissions is with the parameter DUPLICATE_SAME_ACCESS. This means that
+// there is no way for a privileged process to duplicate a file mapping into an
+// unprivileged process while maintaining the previous file permissions.
+//
+// By removing all access control permissions of a file mapping immediately
+// after creation, ::DuplicateHandle() effectively only copies the file
+// permissions.
+HANDLE CreateFileMappingWithReducedPermissions(SECURITY_ATTRIBUTES* sa,
+                                               size_t rounded_size,
+                                               LPCWSTR name) {
+  HANDLE h = CreateFileMapping(INVALID_HANDLE_VALUE, sa, PAGE_READWRITE, 0,
+                               static_cast<DWORD>(rounded_size), name);
+  if (!h) {
+    LogError(CREATE_FILE_MAPPING_FAILURE, GetLastError());
+    return nullptr;
+  }
+
+  HANDLE h2;
+  BOOL success = ::DuplicateHandle(
+      GetCurrentProcess(), h, GetCurrentProcess(), &h2,
+      FILE_MAP_READ | FILE_MAP_WRITE | SECTION_QUERY, FALSE, 0);
+  BOOL rv = ::CloseHandle(h);
+  DCHECK(rv);
+
+  if (!success) {
+    LogError(REDUCE_PERMISSIONS_FAILURE, GetLastError());
+    return nullptr;
+  }
+
+  return h2;
+}
+
+}  // namespace.
+
+SharedMemory::SharedMemory() {}
+
+SharedMemory::SharedMemory(const string16& name) : name_(name) {}
+
+SharedMemory::SharedMemory(const SharedMemoryHandle& handle, bool read_only)
+    : external_section_(true), shm_(handle), read_only_(read_only) {}
+
+SharedMemory::~SharedMemory() {
+  Unmap();
+  Close();
+}
+
+// static
+bool SharedMemory::IsHandleValid(const SharedMemoryHandle& handle) {
+  return handle.IsValid();
+}
+
+// static
+void SharedMemory::CloseHandle(const SharedMemoryHandle& handle) {
+  handle.Close();
+}
+
+// static
+size_t SharedMemory::GetHandleLimit() {
+  // Rounded down from value reported here:
+  // http://blogs.technet.com/b/markrussinovich/archive/2009/09/29/3283844.aspx
+  return static_cast<size_t>(1 << 23);
+}
+
+// static
+SharedMemoryHandle SharedMemory::DuplicateHandle(
+    const SharedMemoryHandle& handle) {
+  return handle.Duplicate();
+}
+
+bool SharedMemory::CreateAndMapAnonymous(size_t size) {
+  return CreateAnonymous(size) && Map(size);
+}
+
+bool SharedMemory::Create(const SharedMemoryCreateOptions& options) {
+  // TODO(crbug.com/210609): NaCl forces us to round up 64k here, wasting 32k
+  // per mapping on average.
+  static const size_t kSectionMask = 65536 - 1;
+  DCHECK(!options.executable);
+  DCHECK(!shm_.IsValid());
+  if (options.size == 0) {
+    LogError(SIZE_ZERO, 0);
+    return false;
+  }
+
+  // Check maximum accounting for overflow.
+  if (options.size >
+      static_cast<size_t>(std::numeric_limits<int>::max()) - kSectionMask) {
+    LogError(SIZE_TOO_LARGE, 0);
+    return false;
+  }
+
+  size_t rounded_size = (options.size + kSectionMask) & ~kSectionMask;
+  name_ = options.name_deprecated ? ASCIIToUTF16(*options.name_deprecated)
+                                  : string16();
+  SECURITY_ATTRIBUTES sa = {sizeof(sa), nullptr, FALSE};
+  SECURITY_DESCRIPTOR sd;
+  ACL dacl;
+
+  if (name_.empty()) {
+    // Add an empty DACL to enforce anonymous read-only sections.
+    sa.lpSecurityDescriptor = &sd;
+    if (!InitializeAcl(&dacl, sizeof(dacl), ACL_REVISION)) {
+      LogError(INITIALIZE_ACL_FAILURE, GetLastError());
+      return false;
+    }
+    if (!InitializeSecurityDescriptor(&sd, SECURITY_DESCRIPTOR_REVISION)) {
+      LogError(INITIALIZE_SECURITY_DESC_FAILURE, GetLastError());
+      return false;
+    }
+    if (!SetSecurityDescriptorDacl(&sd, TRUE, &dacl, FALSE)) {
+      LogError(SET_SECURITY_DESC_FAILURE, GetLastError());
+      return false;
+    }
+
+    if (win::GetVersion() < win::VERSION_WIN8_1) {
+      // Windows < 8.1 ignores DACLs on certain unnamed objects (like shared
+      // sections). So, we generate a random name when we need to enforce
+      // read-only.
+      uint64_t rand_values[4];
+      RandBytes(&rand_values, sizeof(rand_values));
+      name_ = ASCIIToUTF16(StringPrintf(
+          "CrSharedMem_%016llx%016llx%016llx%016llx", rand_values[0],
+          rand_values[1], rand_values[2], rand_values[3]));
+      DCHECK(!name_.empty());
+    }
+  }
+
+  shm_ = SharedMemoryHandle(
+      CreateFileMappingWithReducedPermissions(
+          &sa, rounded_size, name_.empty() ? nullptr : as_wcstr(name_)),
+      rounded_size, UnguessableToken::Create());
+  if (!shm_.IsValid()) {
+    // The error is logged within CreateFileMappingWithReducedPermissions().
+    return false;
+  }
+
+  requested_size_ = options.size;
+
+  // Check if the shared memory pre-exists.
+  if (GetLastError() == ERROR_ALREADY_EXISTS) {
+    // If the file already existed, set requested_size_ to 0 to show that
+    // we don't know the size.
+    requested_size_ = 0;
+    external_section_ = true;
+    if (!options.open_existing_deprecated) {
+      Close();
+      // From "if" above: GetLastError() == ERROR_ALREADY_EXISTS.
+      LogError(ALREADY_EXISTS, ERROR_ALREADY_EXISTS);
+      return false;
+    }
+  }
+
+  LogError(SUCCESS, ERROR_SUCCESS);
+  return true;
+}
+
+bool SharedMemory::Delete(const std::string& name) {
+  // intentionally empty -- there is nothing for us to do on Windows.
+  return true;
+}
+
+bool SharedMemory::Open(const std::string& name, bool read_only) {
+  DCHECK(!shm_.IsValid());
+  DWORD access = FILE_MAP_READ | SECTION_QUERY;
+  if (!read_only)
+    access |= FILE_MAP_WRITE;
+  name_ = ASCIIToUTF16(name);
+  read_only_ = read_only;
+
+  // This form of sharing shared memory is deprecated. https://crbug.com/345734.
+  // However, we can't get rid of it without a significant refactor because its
+  // used to communicate between two versions of the same service process, very
+  // early in the life cycle.
+  // Technically, we should also pass the GUID from the original shared memory
+  // region. We don't do that - this means that we will overcount this memory,
+  // which thankfully isn't relevant since Chrome only communicates with a
+  // single version of the service process.
+  // We pass the size |0|, which is a dummy size and wrong, but otherwise
+  // harmless.
+  shm_ = SharedMemoryHandle(
+      OpenFileMapping(access, false, name_.empty() ? nullptr : as_wcstr(name_)),
+      0u, UnguessableToken::Create());
+  if (!shm_.IsValid())
+    return false;
+  // If a name specified assume it's an external section.
+  if (!name_.empty())
+    external_section_ = true;
+  // Note: size_ is not set in this case.
+  return true;
+}
+
+bool SharedMemory::MapAt(off_t offset, size_t bytes) {
+  if (!shm_.IsValid()) {
+    DLOG(ERROR) << "Invalid SharedMemoryHandle.";
+    return false;
+  }
+
+  if (bytes > static_cast<size_t>(std::numeric_limits<int>::max())) {
+    DLOG(ERROR) << "Bytes required exceeds the 2G limitation.";
+    return false;
+  }
+
+  if (memory_) {
+    DLOG(ERROR) << "The SharedMemory has been mapped already.";
+    return false;
+  }
+
+  if (external_section_ && !IsSectionSafeToMap(shm_.GetHandle())) {
+    DLOG(ERROR) << "SharedMemoryHandle is not safe to be mapped.";
+    return false;
+  }
+
+  // Try to map the shared memory. On the first failure, release any reserved
+  // address space for a single retry.
+  for (int i = 0; i < 2; ++i) {
+    memory_ = MapViewOfFile(
+        shm_.GetHandle(),
+        read_only_ ? FILE_MAP_READ : FILE_MAP_READ | FILE_MAP_WRITE,
+        static_cast<uint64_t>(offset) >> 32, static_cast<DWORD>(offset), bytes);
+    if (memory_)
+      break;
+    ReleaseReservation();
+  }
+  if (!memory_) {
+    DPLOG(ERROR) << "Failed executing MapViewOfFile";
+    return false;
+  }
+
+  DCHECK_EQ(0U, reinterpret_cast<uintptr_t>(memory_) &
+                    (SharedMemory::MAP_MINIMUM_ALIGNMENT - 1));
+  mapped_size_ = GetMemorySectionSize(memory_);
+  mapped_id_ = shm_.GetGUID();
+  SharedMemoryTracker::GetInstance()->IncrementMemoryUsage(*this);
+  return true;
+}
+
+bool SharedMemory::Unmap() {
+  if (!memory_)
+    return false;
+
+  SharedMemoryTracker::GetInstance()->DecrementMemoryUsage(*this);
+  UnmapViewOfFile(memory_);
+  memory_ = nullptr;
+  mapped_id_ = UnguessableToken();
+  return true;
+}
+
+SharedMemoryHandle SharedMemory::GetReadOnlyHandle() const {
+  HANDLE result;
+  ProcessHandle process = GetCurrentProcess();
+  if (!::DuplicateHandle(process, shm_.GetHandle(), process, &result,
+                         FILE_MAP_READ | SECTION_QUERY, FALSE, 0)) {
+    return SharedMemoryHandle();
+  }
+  SharedMemoryHandle handle =
+      SharedMemoryHandle(result, shm_.GetSize(), shm_.GetGUID());
+  handle.SetOwnershipPassesToIPC(true);
+  return handle;
+}
+
+void SharedMemory::Close() {
+  if (shm_.IsValid()) {
+    shm_.Close();
+    shm_ = SharedMemoryHandle();
+  }
+}
+
+SharedMemoryHandle SharedMemory::handle() const {
+  return shm_;
+}
+
+SharedMemoryHandle SharedMemory::TakeHandle() {
+  SharedMemoryHandle handle(shm_);
+  handle.SetOwnershipPassesToIPC(true);
+  Unmap();
+  shm_ = SharedMemoryHandle();
+  return handle;
+}
+
+}  // namespace base

security/sandbox/chromium/base/memory/unsafe_shared_memory_region.cc

@@ -1,80 +0,0 @@
-// Copyright 2018 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#include "base/memory/unsafe_shared_memory_region.h"
-
-#include <utility>
-
-namespace base {
-
-UnsafeSharedMemoryRegion::CreateFunction*
-    UnsafeSharedMemoryRegion::create_hook_ = nullptr;
-
-// static
-UnsafeSharedMemoryRegion UnsafeSharedMemoryRegion::Create(size_t size) {
-  if (create_hook_)
-    return create_hook_(size);
-
-  subtle::PlatformSharedMemoryRegion handle =
-      subtle::PlatformSharedMemoryRegion::CreateUnsafe(size);
-
-  return UnsafeSharedMemoryRegion(std::move(handle));
-}
-
-// static
-UnsafeSharedMemoryRegion UnsafeSharedMemoryRegion::Deserialize(
-    subtle::PlatformSharedMemoryRegion handle) {
-  return UnsafeSharedMemoryRegion(std::move(handle));
-}
-
-// static
-subtle::PlatformSharedMemoryRegion
-UnsafeSharedMemoryRegion::TakeHandleForSerialization(
-    UnsafeSharedMemoryRegion region) {
-  return std::move(region.handle_);
-}
-
-UnsafeSharedMemoryRegion::UnsafeSharedMemoryRegion() = default;
-UnsafeSharedMemoryRegion::UnsafeSharedMemoryRegion(
-    UnsafeSharedMemoryRegion&& region) = default;
-UnsafeSharedMemoryRegion& UnsafeSharedMemoryRegion::operator=(
-    UnsafeSharedMemoryRegion&& region) = default;
-UnsafeSharedMemoryRegion::~UnsafeSharedMemoryRegion() = default;
-
-UnsafeSharedMemoryRegion UnsafeSharedMemoryRegion::Duplicate() const {
-  return UnsafeSharedMemoryRegion(handle_.Duplicate());
-}
-
-WritableSharedMemoryMapping UnsafeSharedMemoryRegion::Map() const {
-  return MapAt(0, handle_.GetSize());
-}
-
-WritableSharedMemoryMapping UnsafeSharedMemoryRegion::MapAt(off_t offset,
-                                                            size_t size) const {
-  if (!IsValid())
-    return {};
-
-  void* memory = nullptr;
-  size_t mapped_size = 0;
-  if (!handle_.MapAt(offset, size, &memory, &mapped_size))
-    return {};
-
-  return WritableSharedMemoryMapping(memory, size, mapped_size,
-                                     handle_.GetGUID());
-}
-
-bool UnsafeSharedMemoryRegion::IsValid() const {
-  return handle_.IsValid();
-}
-
-UnsafeSharedMemoryRegion::UnsafeSharedMemoryRegion(
-    subtle::PlatformSharedMemoryRegion handle)
-    : handle_(std::move(handle)) {
-  if (handle_.IsValid()) {
-    CHECK_EQ(handle_.GetMode(),
-             subtle::PlatformSharedMemoryRegion::Mode::kUnsafe);
-  }
-}
-
-}  // namespace base