Update Crashpad to 20ed4146d37705a12a5b603a89c97f206f58d14c

f16e4eb9ffbf Implement SleepNanoseconds() on Windows
b953388b9553 Add SystemSnapshotLinux
ad1b86535c6a Roll mini_chromium to 068fe690218f
20ed4146d377 Use StringPiece for key and value in SimpleStringDictionary
             interface

Bug: 758724
Change-Id: I0ef3d1a95dd2b2475a11256891beca32ab593fc5
Reviewed-on: https://chromium-review.googlesource.com/652669
Commit-Queue: Sigurður Ásgeirsson <siggi@chromium.org>
Reviewed-by: Mark Mentovai <mark@chromium.org>
Cr-Original-Commit-Position: refs/heads/master@{#500022}
Cr-Mirrored-From: https://chromium.googlesource.com/chromium/src
Cr-Mirrored-Commit: 97fba6506881970e6c7b0578a9cee9ef977321fe

secondary/third_party/crashpad/crashpad/snapshot/BUILD.gn

@@ -76,6 +76,8 @@ static_library("snapshot") {
     "minidump/process_snapshot_minidump.cc",
     "minidump/process_snapshot_minidump.h",
     "module_snapshot.h",
+    "posix/timezone.cc",
+    "posix/timezone.h",
     "process_snapshot.h",
     "system_snapshot.h",
     "thread_snapshot.h",
@@ -110,6 +112,13 @@ static_library("snapshot") {
     "win/thread_snapshot_win.cc",
     "win/thread_snapshot_win.h",
   ]
+
+  if (target_cpu == "x86" || target_cpu == "x64") {
+    sources += [
+      "x86/cpuid_reader.cc",
+      "x86/cpuid_reader.h",
+    ]
+  }
 }
 
 if (is_win) {