Bug 1633820 - Part 3: Get rid of PBrowserOrId, r=mattwoodrow,necko-reviewers,dragana

The 'Id' variant was only used with b2g for remote `mozbrowser`s, and is no
longer relevant. The new code instead uses `PBrowser` directly in all cases.

Differential Revision: https://phabricator.services.mozilla.com/D72933

docshell/base/LoadContext.cpp

@@ -10,6 +10,7 @@
 #include "mozilla/Preferences.h"
 #include "mozilla/dom/Element.h"
 #include "mozilla/dom/ScriptSettings.h"  // for AutoJSAPI
+#include "mozilla/dom/BrowsingContext.h"
 #include "nsContentUtils.h"
 #include "xpcpublic.h"
 
@@ -17,6 +18,32 @@ namespace mozilla {
 
 NS_IMPL_ISUPPORTS(LoadContext, nsILoadContext, nsIInterfaceRequestor)
 
+LoadContext::LoadContext(const IPC::SerializedLoadContext& aToCopy,
+                         dom::Element* aTopFrameElement,
+                         OriginAttributes& aAttrs)
+    : mTopFrameElement(do_GetWeakReference(aTopFrameElement)),
+      mIsContent(aToCopy.mIsContent),
+      mUseRemoteTabs(aToCopy.mUseRemoteTabs),
+      mUseRemoteSubframes(aToCopy.mUseRemoteSubframes),
+      mUseTrackingProtection(aToCopy.mUseTrackingProtection),
+#ifdef DEBUG
+      mIsNotNull(aToCopy.mIsNotNull),
+#endif
+      mOriginAttributes(aAttrs) {
+}
+
+LoadContext::LoadContext(OriginAttributes& aAttrs)
+    : mTopFrameElement(nullptr),
+      mIsContent(false),
+      mUseRemoteTabs(false),
+      mUseRemoteSubframes(false),
+      mUseTrackingProtection(false),
+#ifdef DEBUG
+      mIsNotNull(true),
+#endif
+      mOriginAttributes(aAttrs) {
+}
+
 LoadContext::LoadContext(nsIPrincipal* aPrincipal,
                          nsILoadContext* aOptionalBase)
     : mTopFrameElement(nullptr),
@@ -40,6 +67,8 @@ LoadContext::LoadContext(nsIPrincipal* aPrincipal,
       aOptionalBase->GetUseTrackingProtection(&mUseTrackingProtection));
 }
 
+LoadContext::~LoadContext() = default;
+
 //-----------------------------------------------------------------------------
 // LoadContext::nsILoadContext
 //-----------------------------------------------------------------------------

docshell/base/LoadContext.h

@@ -22,7 +22,7 @@ namespace mozilla {
  * from Child via SerializedLoadContext.
  *
  * Note: this is not the "normal" or "original" nsILoadContext.  That is
- * typically provided by nsDocShell.  This is only used when the original
+ * typically provided by BrowsingContext.  This is only used when the original
  * docshell is in a different process and we need to copy certain values from
  * it.
  */
@@ -34,54 +34,17 @@ class LoadContext final : public nsILoadContext, public nsIInterfaceRequestor {
   NS_DECL_NSIINTERFACEREQUESTOR
 
   LoadContext(const IPC::SerializedLoadContext& aToCopy,
-              dom::Element* aTopFrameElement, OriginAttributes& aAttrs)
-      : mTopFrameElement(do_GetWeakReference(aTopFrameElement)),
-        mIsContent(aToCopy.mIsContent),
-        mUseRemoteTabs(aToCopy.mUseRemoteTabs),
-        mUseRemoteSubframes(aToCopy.mUseRemoteSubframes),
-        mUseTrackingProtection(aToCopy.mUseTrackingProtection),
-#ifdef DEBUG
-        mIsNotNull(aToCopy.mIsNotNull),
-#endif
-        mOriginAttributes(aAttrs) {
-  }
-
-  LoadContext(dom::Element* aTopFrameElement, bool aIsContent,
-              bool aUsePrivateBrowsing, bool aUseRemoteTabs,
-              bool aUseRemoteSubframes, bool aUseTrackingProtection,
-              const OriginAttributes& aAttrs)
-      : mTopFrameElement(do_GetWeakReference(aTopFrameElement)),
-        mIsContent(aIsContent),
-        mUseRemoteTabs(aUseRemoteTabs),
-        mUseRemoteSubframes(aUseRemoteSubframes),
-        mUseTrackingProtection(aUseTrackingProtection),
-#ifdef DEBUG
-        mIsNotNull(true),
-#endif
-        mOriginAttributes(aAttrs) {
-    MOZ_DIAGNOSTIC_ASSERT(aUsePrivateBrowsing ==
-                          (aAttrs.mPrivateBrowsingId > 0));
-  }
+              dom::Element* aTopFrameElement, OriginAttributes& aAttrs);
 
   // Constructor taking reserved origin attributes.
-  explicit LoadContext(OriginAttributes& aAttrs)
-      : mTopFrameElement(nullptr),
-        mIsContent(false),
-        mUseRemoteTabs(false),
-        mUseRemoteSubframes(false),
-        mUseTrackingProtection(false),
-#ifdef DEBUG
-        mIsNotNull(true),
-#endif
-        mOriginAttributes(aAttrs) {
-  }
+  explicit LoadContext(OriginAttributes& aAttrs);
 
   // Constructor for creating a LoadContext with a given browser flag.
   explicit LoadContext(nsIPrincipal* aPrincipal,
                        nsILoadContext* aOptionalBase = nullptr);
 
  private:
-  ~LoadContext() {}
+  ~LoadContext();
 
   nsWeakPtr mTopFrameElement;
   bool mIsContent;

dom/ipc/ContentChild.cpp

@@ -867,7 +867,6 @@ nsresult ContentChild::ProvideWindowCommon(
   *aReturn = nullptr;
 
   UniquePtr<IPCTabContext> ipcContext;
-  TabId openerTabId = TabId(0);
   nsAutoCString features(aFeatures);
   nsAutoString name(aName);
 
@@ -945,8 +944,7 @@ nsresult ContentChild::ProvideWindowCommon(
 
   if (aTabOpener) {
     PopupIPCTabContext context;
-    openerTabId = aTabOpener->GetTabId();
-    context.opener() = openerTabId;
+    context.openerChild() = aTabOpener;
     ipcContext = MakeUnique<IPCTabContext>(context);
   } else {
     // It's possible to not have a BrowserChild opener in the case
@@ -1015,11 +1013,6 @@ nsresult ContentChild::ProvideWindowCommon(
                                            browsingContext, aChromeFlags,
                                            /* aIsTopLevel */ true);
 
-  if (aTabOpener) {
-    MOZ_ASSERT(ipcContext->type() == IPCTabContext::TPopupIPCTabContext);
-    ipcContext->get_PopupIPCTabContext().opener() = aTabOpener;
-  }
-
   if (IsShuttingDown()) {
     return NS_ERROR_ABORT;
   }
@@ -2927,13 +2920,6 @@ void ContentChild::ShutdownInternal() {
            : NS_LITERAL_CSTRING("SendFinishShutdown (failed)"));
 }
 
-PBrowserOrId ContentChild::GetBrowserOrId(BrowserChild* aBrowserChild) {
-  if (!aBrowserChild || this == aBrowserChild->Manager()) {
-    return PBrowserOrId(aBrowserChild);
-  }
-  return PBrowserOrId(aBrowserChild->GetTabId());
-}
-
 mozilla::ipc::IPCResult ContentChild::RecvUpdateWindow(
     const uintptr_t& aChildId) {
 #if defined(XP_WIN)

dom/ipc/ContentChild.h

@@ -14,7 +14,6 @@
 #include "mozilla/dom/BrowserBridgeChild.h"
 #include "mozilla/dom/ProcessActor.h"
 #include "mozilla/dom/JSProcessActorChild.h"
-#include "mozilla/dom/PBrowserOrId.h"
 #include "mozilla/dom/PContentChild.h"
 #include "mozilla/dom/RemoteBrowser.h"
 #include "mozilla/StaticPtr.h"
@@ -76,13 +75,12 @@ class GetFilesHelperChild;
 class TabContext;
 enum class MediaControlKeysEvent : uint32_t;
 
-class ContentChild final
-    : public PContentChild,
-      public nsIContentChild,
-      public nsIWindowProvider,
-      public mozilla::ipc::IShmemAllocator,
-      public mozilla::ipc::ChildToParentStreamActorManager,
-      public ProcessActor {
+class ContentChild final : public PContentChild,
+                           public nsIContentChild,
+                           public nsIWindowProvider,
+                           public mozilla::ipc::IShmemAllocator,
+                           public mozilla::ipc::ChildToParentStreamActorManager,
+                           public ProcessActor {
   typedef mozilla::dom::ClonedMessageData ClonedMessageData;
   typedef mozilla::ipc::FileDescriptor FileDescriptor;
   typedef mozilla::ipc::PFileDescriptorSetChild PFileDescriptorSetChild;
@@ -507,8 +505,6 @@ class ContentChild final
 
   void GetAvailableDictionaries(nsTArray<nsString>& aDictionaries);
 
-  PBrowserOrId GetBrowserOrId(BrowserChild* aBrowserChild);
-
   PWebrtcGlobalChild* AllocPWebrtcGlobalChild();
 
   bool DeallocPWebrtcGlobalChild(PWebrtcGlobalChild* aActor);

dom/ipc/ContentParent.cpp

@@ -3169,14 +3169,8 @@ bool ContentParent::CanOpenBrowser(const IPCTabContext& aContext) {
 
   if (aContext.type() == IPCTabContext::TPopupIPCTabContext) {
     const PopupIPCTabContext& popupContext = aContext.get_PopupIPCTabContext();
-    if (popupContext.opener().type() != PBrowserOrId::TPBrowserParent) {
-      ASSERT_UNLESS_FUZZING(
-          "Unexpected PopupIPCTabContext type.  Aborting AllocPBrowserParent.");
-      return false;
-    }
 
-    auto opener =
-        BrowserParent::GetFrom(popupContext.opener().get_PBrowserParent());
+    auto opener = BrowserParent::GetFrom(popupContext.openerParent());
     if (!opener) {
       ASSERT_UNLESS_FUZZING(
           "Got null opener from child; aborting AllocPBrowserParent.");
@@ -3222,8 +3216,7 @@ mozilla::ipc::IPCResult ContentParent::RecvConstructPopupBrowser(
     // type PopupIPCTabContext, and that the opener BrowserParent is
     // reachable.
     const PopupIPCTabContext& popupContext = aContext.get_PopupIPCTabContext();
-    auto opener =
-        BrowserParent::GetFrom(popupContext.opener().get_PBrowserParent());
+    auto opener = BrowserParent::GetFrom(popupContext.openerParent());
     openerTabId = opener->GetTabId();
     openerCpId = opener->Manager()->ChildID();
 

dom/ipc/DOMTypes.ipdlh

@@ -29,7 +29,7 @@ using CSSRect from "Units.h";
 using CSSSize from "Units.h";
 using ScreenIntSize from "Units.h";
 using mozilla::LayoutDeviceIntPoint from "Units.h";
-using nsSizeMode from "nsIWidgetListener.h";
+using nsSizeMode from "mozilla/dom/TabMessageUtils.h";
 using ScrollbarPreference from "mozilla/ScrollbarPreferences.h";
 using hal::ScreenOrientation from "mozilla/HalScreenConfiguration.h";
 using mozilla::gfx::SurfaceFormat from "mozilla/gfx/Types.h";

dom/ipc/PBrowserOrId.ipdlh

@@ -1,21 +0,0 @@
-/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
-/* vim: set sw=2 ts=8 et tw=80 ft=c: */
-/* 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 protocol PBrowser;
-
-using mozilla::dom::TabId from "mozilla/dom/ipc/IdType.h";
-
-namespace mozilla {
-namespace dom {
-
-union PBrowserOrId
-{
-  nullable PBrowser;
-  TabId;
-};
-
-} // namespace dom
-} // namespace mozilla

dom/ipc/PTabContext.ipdlh

@@ -7,7 +7,6 @@
 include "mozilla/dom/TabMessageUtils.h";
 
 include protocol PBrowser;
-include PBrowserOrId;
 
 using UIStateChangeType from "nsPIDOMWindow.h";
 using mozilla::OriginAttributes from "mozilla/ipc/BackgroundUtils.h";
@@ -19,7 +18,7 @@ namespace dom {
 // receives window.open().
 struct PopupIPCTabContext
 {
-  PBrowserOrId opener;
+  PBrowser opener;
   uint64_t chromeOuterWindowID;
 };
 

dom/ipc/TabContext.cpp

@@ -122,29 +122,14 @@ MaybeInvalidTabContext::MaybeInvalidTabContext(const IPCTabContext& aParams)
       const PopupIPCTabContext& ipcContext = aParams.get_PopupIPCTabContext();
 
       TabContext* context;
-      if (ipcContext.opener().type() == PBrowserOrId::TPBrowserParent) {
-        context =
-            BrowserParent::GetFrom(ipcContext.opener().get_PBrowserParent());
-        if (!context) {
-          mInvalidReason =
-              "Child is-browser process tried to "
-              "open a null tab.";
-          return;
-        }
-      } else if (ipcContext.opener().type() == PBrowserOrId::TPBrowserChild) {
-        context =
-            static_cast<BrowserChild*>(ipcContext.opener().get_PBrowserChild());
-      } else if (ipcContext.opener().type() == PBrowserOrId::TTabId) {
-        // We should never get here because this PopupIPCTabContext is only
-        // used for allocating a new tab id, not for allocating a PBrowser.
-        mInvalidReason =
-            "Child process tried to open an tab without the opener "
-            "information.";
-        return;
+      if (ipcContext.openerParent()) {
+        context = BrowserParent::GetFrom(ipcContext.openerParent());
+      } else if (ipcContext.openerChild()) {
+        context = static_cast<BrowserChild*>(ipcContext.openerChild());
       } else {
         // This should be unreachable because PopupIPCTabContext::opener is not
         // a nullable field.
-        mInvalidReason = "PopupIPCTabContext::opener was null (?!).";
+        mInvalidReason = "PopupIPCTabContext::opener was null.";
         return;
       }
 

dom/ipc/moz.build

@@ -160,7 +160,6 @@ PREPROCESSED_IPDL_SOURCES += [
 IPDL_SOURCES += [
     'DOMTypes.ipdlh',
     'MemoryReportTypes.ipdlh',
-    'PBrowserOrId.ipdlh',
     'PColorPicker.ipdl',
     'PContentPermission.ipdlh',
     'PContentPermissionRequest.ipdl',

netwerk/ipc/NeckoChild.cpp

@@ -127,15 +127,8 @@ bool NeckoChild::DeallocPAltDataOutputStreamChild(
   return true;
 }
 
-already_AddRefed<PDocumentChannelChild> NeckoChild::AllocPDocumentChannelChild(
-    const PBrowserOrId& aBrowser, const SerializedLoadContext& aSerialized,
-    const DocumentChannelCreationArgs& args) {
-  MOZ_ASSERT_UNREACHABLE("AllocPDocumentChannelChild should not be called");
-  return nullptr;
-}
-
 PFTPChannelChild* NeckoChild::AllocPFTPChannelChild(
-    const PBrowserOrId& aBrowser, const SerializedLoadContext& aSerialized,
+    PBrowserChild* aBrowser, const SerializedLoadContext& aSerialized,
     const FTPChannelCreationArgs& aOpenArgs) {
   // We don't allocate here: see FTPChannelChild::AsyncOpen()
   MOZ_CRASH("AllocPFTPChannelChild should not be called");
@@ -166,7 +159,7 @@ bool NeckoChild::DeallocPCookieServiceChild(PCookieServiceChild* cs) {
 }
 
 PWebSocketChild* NeckoChild::AllocPWebSocketChild(
-    const PBrowserOrId& browser, const SerializedLoadContext& aSerialized,
+    PBrowserChild* browser, const SerializedLoadContext& aSerialized,
     const uint32_t& aSerial) {
   MOZ_ASSERT_UNREACHABLE("AllocPWebSocketChild should not be called");
   return nullptr;

netwerk/ipc/NeckoChild.h

@@ -36,17 +36,13 @@ class NeckoChild : public PNeckoChild {
       PHttpChannelChild* channel);
   bool DeallocPAltDataOutputStreamChild(PAltDataOutputStreamChild* aActor);
 
-  already_AddRefed<PDocumentChannelChild> AllocPDocumentChannelChild(
-      const PBrowserOrId& aBrowser, const SerializedLoadContext& aSerialized,
-      const DocumentChannelCreationArgs& args);
-
   PCookieServiceChild* AllocPCookieServiceChild();
   bool DeallocPCookieServiceChild(PCookieServiceChild*);
   PFTPChannelChild* AllocPFTPChannelChild(
-      const PBrowserOrId& aBrowser, const SerializedLoadContext& aSerialized,
+      PBrowserChild* aBrowser, const SerializedLoadContext& aSerialized,
       const FTPChannelCreationArgs& aOpenArgs);
   bool DeallocPFTPChannelChild(PFTPChannelChild*);
-  PWebSocketChild* AllocPWebSocketChild(const PBrowserOrId&,
+  PWebSocketChild* AllocPWebSocketChild(PBrowserChild*,
                                         const SerializedLoadContext&,
                                         const uint32_t&);
   bool DeallocPWebSocketChild(PWebSocketChild*);

netwerk/ipc/NeckoParent.cpp

@@ -147,7 +147,7 @@ const char* NeckoParent::GetValidatedOriginAttributes(
 }
 
 const char* NeckoParent::CreateChannelLoadContext(
-    const PBrowserOrId& aBrowser, PContentParent* aContent,
+    PBrowserParent* aBrowser, PContentParent* aContent,
     const SerializedLoadContext& aSerialized,
     nsIPrincipal* aRequestingPrincipal, nsCOMPtr<nsILoadContext>& aResult) {
   OriginAttributes attrs;
@@ -162,24 +162,13 @@ const char* NeckoParent::CreateChannelLoadContext(
   if (aSerialized.IsNotNull()) {
     attrs.SyncAttributesWithPrivateBrowsing(
         aSerialized.mOriginAttributes.mPrivateBrowsingId > 0);
-    switch (aBrowser.type()) {
-      case PBrowserOrId::TPBrowserParent: {
-        RefPtr<BrowserParent> browserParent =
-            BrowserParent::GetFrom(aBrowser.get_PBrowserParent());
-        dom::Element* topFrameElement = nullptr;
-        if (browserParent) {
-          topFrameElement = browserParent->GetOwnerElement();
-        }
-        aResult = new LoadContext(aSerialized, topFrameElement, attrs);
-        break;
-      }
-      case PBrowserOrId::TTabId: {
-        aResult = new LoadContext(aSerialized, nullptr, attrs);
-        break;
-      }
-      default:
-        MOZ_CRASH();
+
+    RefPtr<BrowserParent> browserParent = BrowserParent::GetFrom(aBrowser);
+    dom::Element* topFrameElement = nullptr;
+    if (browserParent) {
+      topFrameElement = browserParent->GetOwnerElement();
     }
+    aResult = new LoadContext(aSerialized, topFrameElement, attrs);
   }
 
   return nullptr;
@@ -191,7 +180,7 @@ void NeckoParent::ActorDestroy(ActorDestroyReason aWhy) {
 }
 
 already_AddRefed<PHttpChannelParent> NeckoParent::AllocPHttpChannelParent(
-    const PBrowserOrId& aBrowser, const SerializedLoadContext& aSerialized,
+    PBrowserParent* aBrowser, const SerializedLoadContext& aSerialized,
     const HttpChannelCreationArgs& aOpenArgs) {
   nsCOMPtr<nsIPrincipal> requestingPrincipal =
       GetRequestingPrincipal(aOpenArgs);
@@ -208,13 +197,13 @@ already_AddRefed<PHttpChannelParent> NeckoParent::AllocPHttpChannelParent(
   }
   PBOverrideStatus overrideStatus =
       PBOverrideStatusFromLoadContext(aSerialized);
-  RefPtr<HttpChannelParent> p =
-      new HttpChannelParent(aBrowser, loadContext, overrideStatus);
+  RefPtr<HttpChannelParent> p = new HttpChannelParent(
+      BrowserParent::GetFrom(aBrowser), loadContext, overrideStatus);
   return p.forget();
 }
 
 mozilla::ipc::IPCResult NeckoParent::RecvPHttpChannelConstructor(
-    PHttpChannelParent* aActor, const PBrowserOrId& aBrowser,
+    PHttpChannelParent* aActor, PBrowserParent* aBrowser,
     const SerializedLoadContext& aSerialized,
     const HttpChannelCreationArgs& aOpenArgs) {
   HttpChannelParent* p = static_cast<HttpChannelParent*>(aActor);
@@ -287,7 +276,7 @@ bool NeckoParent::DeallocPAltDataOutputStreamParent(
 }
 
 PFTPChannelParent* NeckoParent::AllocPFTPChannelParent(
-    const PBrowserOrId& aBrowser, const SerializedLoadContext& aSerialized,
+    PBrowserParent* aBrowser, const SerializedLoadContext& aSerialized,
     const FTPChannelCreationArgs& aOpenArgs) {
   nsCOMPtr<nsIPrincipal> requestingPrincipal =
       GetRequestingPrincipal(aOpenArgs);
@@ -304,8 +293,8 @@ PFTPChannelParent* NeckoParent::AllocPFTPChannelParent(
   }
   PBOverrideStatus overrideStatus =
       PBOverrideStatusFromLoadContext(aSerialized);
-  FTPChannelParent* p =
-      new FTPChannelParent(aBrowser, loadContext, overrideStatus);
+  FTPChannelParent* p = new FTPChannelParent(BrowserParent::GetFrom(aBrowser),
+                                             loadContext, overrideStatus);
   p->AddRef();
   return p;
 }
@@ -317,7 +306,7 @@ bool NeckoParent::DeallocPFTPChannelParent(PFTPChannelParent* channel) {
 }
 
 mozilla::ipc::IPCResult NeckoParent::RecvPFTPChannelConstructor(
-    PFTPChannelParent* aActor, const PBrowserOrId& aBrowser,
+    PFTPChannelParent* aActor, PBrowserParent* aBrowser,
     const SerializedLoadContext& aSerialized,
     const FTPChannelCreationArgs& aOpenArgs) {
   FTPChannelParent* p = static_cast<FTPChannelParent*>(aActor);
@@ -362,7 +351,7 @@ bool NeckoParent::DeallocPCookieServiceParent(PCookieServiceParent* cs) {
 }
 
 PWebSocketParent* NeckoParent::AllocPWebSocketParent(
-    const PBrowserOrId& browser, const SerializedLoadContext& serialized,
+    PBrowserParent* browser, const SerializedLoadContext& serialized,
     const uint32_t& aSerial) {
   nsCOMPtr<nsILoadContext> loadContext;
   const char* error = CreateChannelLoadContext(browser, Manager(), serialized,
@@ -375,8 +364,7 @@ PWebSocketParent* NeckoParent::AllocPWebSocketParent(
     return nullptr;
   }
 
-  RefPtr<BrowserParent> browserParent =
-      BrowserParent::GetFrom(browser.get_PBrowserParent());
+  RefPtr<BrowserParent> browserParent = BrowserParent::GetFrom(browser);
   PBOverrideStatus overrideStatus = PBOverrideStatusFromLoadContext(serialized);
   WebSocketChannelParent* p = new WebSocketChannelParent(
       browserParent, loadContext, overrideStatus, aSerial);

netwerk/ipc/NeckoParent.h

@@ -45,7 +45,7 @@ class NeckoParent : public PNeckoParent {
    * Returns null if successful, or an error string if failed.
    */
   [[nodiscard]] static const char* CreateChannelLoadContext(
-      const PBrowserOrId& aBrowser, PContentParent* aContent,
+      PBrowserParent* aBrowser, PContentParent* aContent,
       const SerializedLoadContext& aSerialized,
       nsIPrincipal* aRequestingPrincipal, nsCOMPtr<nsILoadContext>& aResult);
 
@@ -90,10 +90,10 @@ class NeckoParent : public PNeckoParent {
   bool mSocketProcessBridgeInited;
 
   already_AddRefed<PHttpChannelParent> AllocPHttpChannelParent(
-      const PBrowserOrId&, const SerializedLoadContext&,
+      PBrowserParent*, const SerializedLoadContext&,
       const HttpChannelCreationArgs& aOpenArgs);
   virtual mozilla::ipc::IPCResult RecvPHttpChannelConstructor(
-      PHttpChannelParent* aActor, const PBrowserOrId& aBrowser,
+      PHttpChannelParent* aActor, PBrowserParent* aBrowser,
       const SerializedLoadContext& aSerialized,
       const HttpChannelCreationArgs& aOpenArgs) override;
 
@@ -111,15 +111,15 @@ class NeckoParent : public PNeckoParent {
 
   bool DeallocPCookieServiceParent(PCookieServiceParent*);
   PFTPChannelParent* AllocPFTPChannelParent(
-      const PBrowserOrId& aBrowser, const SerializedLoadContext& aSerialized,
+      PBrowserParent* aBrowser, const SerializedLoadContext& aSerialized,
       const FTPChannelCreationArgs& aOpenArgs);
   virtual mozilla::ipc::IPCResult RecvPFTPChannelConstructor(
-      PFTPChannelParent* aActor, const PBrowserOrId& aBrowser,
+      PFTPChannelParent* aActor, PBrowserParent* aBrowser,
       const SerializedLoadContext& aSerialized,
       const FTPChannelCreationArgs& aOpenArgs) override;
   bool DeallocPFTPChannelParent(PFTPChannelParent*);
   PWebSocketParent* AllocPWebSocketParent(
-      const PBrowserOrId& browser, const SerializedLoadContext& aSerialized,
+      PBrowserParent* browser, const SerializedLoadContext& aSerialized,
       const uint32_t& aSerial);
   bool DeallocPWebSocketParent(PWebSocketParent*);
   PTCPSocketParent* AllocPTCPSocketParent(const nsString& host,

netwerk/ipc/PNecko.ipdl

@@ -32,7 +32,6 @@ include protocol PDocumentChannel;
 
 include IPCStream;
 include NeckoChannelParams;
-include PBrowserOrId;
 include protocol PAltDataOutputStream;
 
 using mozilla::dom::MaybeDiscardedBrowsingContext from "mozilla/dom/BrowsingContext.h";
@@ -74,13 +73,13 @@ parent:
   async __delete__();
 
   nested(inside_cpow) async PCookieService();
-  async PHttpChannel(PBrowserOrId browser,
+  async PHttpChannel(nullable PBrowser browser,
                      SerializedLoadContext loadContext,
                      HttpChannelCreationArgs args);
-  async PFTPChannel(PBrowserOrId browser, SerializedLoadContext loadContext,
+  async PFTPChannel(nullable PBrowser browser, SerializedLoadContext loadContext,
                     FTPChannelCreationArgs args);
 
-  async PWebSocket(PBrowserOrId browser, SerializedLoadContext loadContext,
+  async PWebSocket(nullable PBrowser browser, SerializedLoadContext loadContext,
                    uint32_t aSerialID);
   async PTCPServerSocket(uint16_t localPort, uint16_t backlog, bool useArrayBuffers);
   async PUDPSocket(nsIPrincipal principal, nsCString filter);

netwerk/ipc/PSocketProcess.ipdl

@@ -19,11 +19,11 @@ include protocol PAltSvcTransaction;
 
 include MemoryReportTypes;
 include NeckoChannelParams;
-include PBrowserOrId;
 include PrefsTypes;
 include PSMIPCTypes;
 
 using mozilla::dom::NativeThreadId from "mozilla/dom/TabMessageUtils.h";
+using mozilla::dom::TabId from "mozilla/dom/ipc/IdType.h";
 using mozilla::Telemetry::HistogramAccumulation from "mozilla/TelemetryComms.h";
 using mozilla::Telemetry::KeyedHistogramAccumulation from "mozilla/TelemetryComms.h";
 using mozilla::Telemetry::ScalarAction from "mozilla/TelemetryComms.h";

netwerk/protocol/ftp/FTPChannelParent.cpp

@@ -36,7 +36,7 @@ using namespace mozilla::ipc;
 namespace mozilla {
 namespace net {
 
-FTPChannelParent::FTPChannelParent(const PBrowserOrId& aIframeEmbedding,
+FTPChannelParent::FTPChannelParent(dom::BrowserParent* aIframeEmbedding,
                                    nsILoadContext* aLoadContext,
                                    PBOverrideStatus aOverrideStatus)
     : mIPCClosed(false),
@@ -46,16 +46,12 @@ FTPChannelParent::FTPChannelParent(const PBrowserOrId& aIframeEmbedding,
       mDivertingFromChild(false),
       mDivertedOnStartRequest(false),
       mSuspendedForDiversion(false),
+      mBrowserParent(aIframeEmbedding),
       mUseUTF8(false) {
   nsIProtocolHandler* handler;
   CallGetService(NS_NETWORK_PROTOCOL_CONTRACTID_PREFIX "ftp", &handler);
   MOZ_ASSERT(handler, "no ftp handler");
 
-  if (aIframeEmbedding.type() == PBrowserOrId::TPBrowserParent) {
-    mBrowserParent =
-        static_cast<dom::BrowserParent*>(aIframeEmbedding.get_PBrowserParent());
-  }
-
   mEventQ = new ChannelEventQueue(static_cast<nsIParentChannel*>(this));
 }
 

netwerk/protocol/ftp/FTPChannelParent.h

@@ -22,7 +22,6 @@ namespace mozilla {
 
 namespace dom {
 class BrowserParent;
-class PBrowserOrId;
 }  // namespace dom
 
 namespace net {
@@ -42,7 +41,7 @@ class FTPChannelParent final : public PFTPChannelParent,
   NS_DECL_NSIINTERFACEREQUESTOR
   NS_DECL_NSICHANNELEVENTSINK
 
-  FTPChannelParent(const dom::PBrowserOrId& aIframeEmbedding,
+  FTPChannelParent(dom::BrowserParent* aIframeEmbedding,
                    nsILoadContext* aLoadContext,
                    PBOverrideStatus aOverrideStatus);
 

netwerk/protocol/http/HttpChannelChild.cpp

@@ -2059,10 +2059,8 @@ HttpChannelChild::ConnectParent(uint32_t registrarId) {
   SetEventTarget();
 
   HttpChannelConnectArgs connectArgs(registrarId, mShouldParentIntercept);
-  PBrowserOrId browser = static_cast<ContentChild*>(gNeckoChild->Manager())
-                             ->GetBrowserOrId(browserChild);
   if (!gNeckoChild->SendPHttpChannelConstructor(
-          this, browser, IPC::SerializedLoadContext(this), connectArgs)) {
+          this, browserChild, IPC::SerializedLoadContext(this), connectArgs)) {
     return NS_ERROR_FAILURE;
   }
 
@@ -2805,9 +2803,8 @@ nsresult HttpChannelChild::ContinueAsyncOpen() {
   // target.
   SetEventTarget();
 
-  PBrowserOrId browser = cc->GetBrowserOrId(browserChild);
   if (!gNeckoChild->SendPHttpChannelConstructor(
-          this, browser, IPC::SerializedLoadContext(this), openArgs)) {
+          this, browserChild, IPC::SerializedLoadContext(this), openArgs)) {
     return NS_ERROR_FAILURE;
   }
 

netwerk/protocol/http/HttpChannelParent.cpp

@@ -63,11 +63,10 @@ using namespace mozilla::ipc;
 namespace mozilla {
 namespace net {
 
-HttpChannelParent::HttpChannelParent(const PBrowserOrId& iframeEmbedding,
+HttpChannelParent::HttpChannelParent(dom::BrowserParent* iframeEmbedding,
                                      nsILoadContext* aLoadContext,
                                      PBOverrideStatus aOverrideStatus)
     : mLoadContext(aLoadContext),
-      mNestedFrameId(0),
       mIPCClosed(false),
       mPBOverride(aOverrideStatus),
       mStatus(NS_OK),
@@ -94,12 +93,7 @@ HttpChannelParent::HttpChannelParent(const PBrowserOrId& iframeEmbedding,
   MOZ_ASSERT(gHttpHandler);
   mHttpHandler = gHttpHandler;
 
-  if (iframeEmbedding.type() == PBrowserOrId::TPBrowserParent) {
-    mBrowserParent =
-        static_cast<dom::BrowserParent*>(iframeEmbedding.get_PBrowserParent());
-  } else {
-    mNestedFrameId = iframeEmbedding.get_TabId();
-  }
+  mBrowserParent = iframeEmbedding;
 
   mSendWindowSize = gHttpHandler->SendWindowSize();
 
@@ -2458,7 +2452,7 @@ NS_IMETHODIMP
 HttpChannelParent::GetAuthPrompt(uint32_t aPromptReason, const nsIID& iid,
                                  void** aResult) {
   nsCOMPtr<nsIAuthPrompt2> prompt =
-      new NeckoParent::NestedFrameAuthPrompt(Manager(), mNestedFrameId);
+      new NeckoParent::NestedFrameAuthPrompt(Manager(), TabId(0));
   prompt.forget(aResult);
   return NS_OK;
 }

netwerk/protocol/http/HttpChannelParent.h

@@ -37,7 +37,6 @@ namespace mozilla {
 
 namespace dom {
 class BrowserParent;
-class PBrowserOrId;
 }  // namespace dom
 
 namespace net {
@@ -81,7 +80,7 @@ class HttpChannelParent final : public nsIInterfaceRequestor,
 
   NS_DECLARE_STATIC_IID_ACCESSOR(HTTP_CHANNEL_PARENT_IID)
 
-  HttpChannelParent(const dom::PBrowserOrId& iframeEmbedding,
+  HttpChannelParent(dom::BrowserParent* iframeEmbedding,
                     nsILoadContext* aLoadContext, PBOverrideStatus aStatus);
 
   [[nodiscard]] bool Init(const HttpChannelCreationArgs& aOpenArgs);
@@ -302,8 +301,6 @@ class HttpChannelParent final : public nsIInterfaceRequestor,
   MozPromiseHolder<GenericNonExclusivePromise> mPromise;
   MozPromiseRequestHolder<GenericNonExclusivePromise> mRequest;
 
-  dom::TabId mNestedFrameId;
-
   // To calculate the delay caused by the e10s back-pressure suspension
   TimeStamp mResumedTimestamp;
 

widget/windows/PlatformWidgetTypes.ipdlh

@@ -7,7 +7,7 @@
 include HeadlessWidgetTypes;
 
 using mozilla::WindowsHandle from "ipc/IPCMessageUtils.h";
-using nsSizeMode from "nsIWidgetListener.h";
+using nsSizeMode from "mozilla/dom/TabMessageUtils.h";
 using nsTransparencyMode from "mozilla/widget/WidgetMessageUtils.h";
 
 namespace mozilla {