Adding upstream version 124.0.1.upstream/124.0.1

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 911 insertions, 0 deletions

diff --git a/dom/ipc/ContentChild.h b/dom/ipc/ContentChild.h
new file mode 100644
index 0000000000..4cd1e0771c
--- /dev/null
+++ b/dom/ipc/ContentChild.h
@@ -0,0 +1,911 @@
+/* -*- Mode: C++; tab-width: 2; 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/. */
+
+#ifndef mozilla_dom_ContentChild_h
+#define mozilla_dom_ContentChild_h
+
+#include "mozilla/Atomics.h"
+#include "mozilla/dom/BlobImpl.h"
+#include "mozilla/dom/GetFilesHelper.h"
+#include "mozilla/dom/UserActivation.h"
+#include "mozilla/dom/PContentChild.h"
+#include "mozilla/dom/ProcessActor.h"
+#include "mozilla/dom/RemoteType.h"
+#include "mozilla/Hal.h"
+#include "mozilla/ipc/InputStreamUtils.h"
+#include "mozilla/ipc/ProtocolUtils.h"
+#include "mozilla/StaticPtr.h"
+#include "mozilla/UniquePtr.h"
+#include "nsClassHashtable.h"
+#include "nscore.h"
+#include "nsHashKeys.h"
+#include "nsIDOMProcessChild.h"
+#include "nsRefPtrHashtable.h"
+#include "nsString.h"
+#include "nsTArrayForwardDeclare.h"
+#include "nsTHashSet.h"
+
+#if defined(XP_MACOSX) && defined(MOZ_SANDBOX)
+#  include "nsIFile.h"
+#endif
+
+#if defined(MOZ_SANDBOX) && defined(MOZ_DEBUG) && defined(ENABLE_TESTS)
+#  include "mozilla/PSandboxTestingChild.h"
+#endif
+
+struct ChromePackage;
+class nsIObserver;
+struct SubstitutionMapping;
+struct OverrideMapping;
+class nsIDomainPolicy;
+class nsIURIClassifierCallback;
+class nsDocShellLoadState;
+class nsFrameLoader;
+class nsIOpenWindowInfo;
+
+namespace mozilla {
+class RemoteSpellcheckEngineChild;
+class ChildProfilerController;
+class BenchmarkStorageChild;
+
+namespace ipc {
+class UntypedEndpoint;
+}
+
+namespace loader {
+class PScriptCacheChild;
+}
+
+namespace widget {
+enum class ThemeChangeKind : uint8_t;
+}
+namespace dom {
+
+namespace ipc {
+class SharedMap;
+}
+
+class AlertObserver;
+class ConsoleListener;
+class ClonedMessageData;
+class BrowserChild;
+class TabContext;
+enum class CallerType : uint32_t;
+
+class ContentChild final : public PContentChild,
+                           public nsIDOMProcessChild,
+                           public mozilla::ipc::IShmemAllocator,
+                           public ProcessActor {
+  using ClonedMessageData = mozilla::dom::ClonedMessageData;
+  using FileDescriptor = mozilla::ipc::FileDescriptor;
+
+  friend class PContentChild;
+
+ public:
+  NS_DECL_NSIDOMPROCESSCHILD
+
+  ContentChild();
+  virtual ~ContentChild();
+  NS_IMETHOD QueryInterface(REFNSIID aIID, void** aInstancePtr) override;
+  NS_IMETHOD_(MozExternalRefCountType) AddRef(void) override { return 1; }
+  NS_IMETHOD_(MozExternalRefCountType) Release(void) override { return 1; }
+
+  struct AppInfo {
+    nsCString version;
+    nsCString buildID;
+    nsCString name;
+    nsCString UAName;
+    nsCString ID;
+    nsCString vendor;
+    nsCString sourceURL;
+    nsCString updateURL;
+  };
+
+  MOZ_CAN_RUN_SCRIPT_BOUNDARY nsresult ProvideWindowCommon(
+      NotNull<BrowserChild*> aTabOpener, nsIOpenWindowInfo* aOpenWindowInfo,
+      uint32_t aChromeFlags, bool aCalledFromJS, nsIURI* aURI,
+      const nsAString& aName, const nsACString& aFeatures,
+      const UserActivation::Modifiers& aModifiers, bool aForceNoOpener,
+      bool aForceNoReferrer, bool aIsPopupRequested,
+      nsDocShellLoadState* aLoadState, bool* aWindowIsNew,
+      BrowsingContext** aReturn);
+
+  void Init(mozilla::ipc::UntypedEndpoint&& aEndpoint,
+            const char* aParentBuildID, uint64_t aChildID, bool aIsForBrowser);
+
+  void InitXPCOM(XPCOMInitData&& aXPCOMInit,
+                 const mozilla::dom::ipc::StructuredCloneData& aInitialData,
+                 bool aIsReadyForBackgroundProcessing);
+
+  void InitSharedUASheets(Maybe<base::SharedMemoryHandle>&& aHandle,
+                          uintptr_t aAddress);
+
+  void InitGraphicsDeviceData(const ContentDeviceData& aData);
+
+  static ContentChild* GetSingleton() { return sSingleton; }
+
+  const AppInfo& GetAppInfo() { return mAppInfo; }
+
+  void SetProcessName(const nsACString& aName,
+                      const nsACString* aETLDplus1 = nullptr,
+                      const nsACString* aCurrentProfile = nullptr);
+
+  void GetProcessName(nsACString& aName) const;
+
+#if defined(XP_MACOSX) && defined(MOZ_SANDBOX)
+  void GetProfileDir(nsIFile** aProfileDir) const {
+    *aProfileDir = mProfileDir;
+    NS_IF_ADDREF(*aProfileDir);
+  }
+
+  void SetProfileDir(nsIFile* aProfileDir) { mProfileDir = aProfileDir; }
+#endif
+
+  bool IsAlive() const;
+
+  bool IsShuttingDown() const;
+
+  ipc::SharedMap* SharedData() { return mSharedData; };
+
+  static void AppendProcessId(nsACString& aName);
+
+  static RefPtr<GenericPromise> UpdateCookieStatus(nsIChannel* aChannel);
+
+  mozilla::ipc::IPCResult RecvInitGMPService(
+      Endpoint<PGMPServiceChild>&& aGMPService);
+
+  mozilla::ipc::IPCResult RecvInitProfiler(
+      Endpoint<PProfilerChild>&& aEndpoint);
+
+  mozilla::ipc::IPCResult RecvGMPsChanged(
+      nsTArray<GMPCapabilityData>&& capabilities);
+
+  mozilla::ipc::IPCResult RecvInitProcessHangMonitor(
+      Endpoint<PProcessHangMonitorChild>&& aHangMonitor);
+
+  mozilla::ipc::IPCResult RecvInitRendering(
+      Endpoint<PCompositorManagerChild>&& aCompositor,
+      Endpoint<PImageBridgeChild>&& aImageBridge,
+      Endpoint<PVRManagerChild>&& aVRBridge,
+      Endpoint<PRemoteDecoderManagerChild>&& aVideoManager,
+      nsTArray<uint32_t>&& namespaces);
+
+  mozilla::ipc::IPCResult RecvReinitRendering(
+      Endpoint<PCompositorManagerChild>&& aCompositor,
+      Endpoint<PImageBridgeChild>&& aImageBridge,
+      Endpoint<PVRManagerChild>&& aVRBridge,
+      Endpoint<PRemoteDecoderManagerChild>&& aVideoManager,
+      nsTArray<uint32_t>&& namespaces);
+
+  mozilla::ipc::IPCResult RecvReinitRenderingForDeviceReset();
+
+  mozilla::ipc::IPCResult RecvSetProcessSandbox(
+      const Maybe<FileDescriptor>& aBroker);
+
+  PHalChild* AllocPHalChild();
+  bool DeallocPHalChild(PHalChild*);
+
+  PHeapSnapshotTempFileHelperChild* AllocPHeapSnapshotTempFileHelperChild();
+
+  bool DeallocPHeapSnapshotTempFileHelperChild(
+      PHeapSnapshotTempFileHelperChild*);
+
+  PCycleCollectWithLogsChild* AllocPCycleCollectWithLogsChild(
+      const bool& aDumpAllTraces, const FileDescriptor& aGCLog,
+      const FileDescriptor& aCCLog);
+
+  bool DeallocPCycleCollectWithLogsChild(PCycleCollectWithLogsChild* aActor);
+
+  virtual mozilla::ipc::IPCResult RecvPCycleCollectWithLogsConstructor(
+      PCycleCollectWithLogsChild* aChild, const bool& aDumpAllTraces,
+      const FileDescriptor& aGCLog, const FileDescriptor& aCCLog) override;
+
+  already_AddRefed<PWebBrowserPersistDocumentChild>
+  AllocPWebBrowserPersistDocumentChild(
+      PBrowserChild* aBrowser, const MaybeDiscarded<BrowsingContext>& aContext);
+
+  virtual mozilla::ipc::IPCResult RecvPWebBrowserPersistDocumentConstructor(
+      PWebBrowserPersistDocumentChild* aActor, PBrowserChild* aBrowser,
+      const MaybeDiscarded<BrowsingContext>& aContext) override;
+
+  already_AddRefed<PTestShellChild> AllocPTestShellChild();
+
+  virtual mozilla::ipc::IPCResult RecvPTestShellConstructor(
+      PTestShellChild*) override;
+
+  PScriptCacheChild* AllocPScriptCacheChild(const FileDescOrError& cacheFile,
+                                            const bool& wantCacheData);
+
+  bool DeallocPScriptCacheChild(PScriptCacheChild*);
+
+  virtual mozilla::ipc::IPCResult RecvPScriptCacheConstructor(
+      PScriptCacheChild*, const FileDescOrError& cacheFile,
+      const bool& wantCacheData) override;
+
+  PRemotePrintJobChild* AllocPRemotePrintJobChild();
+
+  already_AddRefed<PClipboardReadRequestChild> AllocPClipboardReadRequestChild(
+      const nsTArray<nsCString>& aTypes);
+
+  PMediaChild* AllocPMediaChild();
+
+  bool DeallocPMediaChild(PMediaChild* aActor);
+
+  PBenchmarkStorageChild* AllocPBenchmarkStorageChild();
+
+  bool DeallocPBenchmarkStorageChild(PBenchmarkStorageChild* aActor);
+
+  mozilla::ipc::IPCResult RecvNotifyEmptyHTTPCache();
+
+  mozilla::ipc::IPCResult RecvRegisterChrome(
+      nsTArray<ChromePackage>&& packages,
+      nsTArray<SubstitutionMapping>&& resources,
+      nsTArray<OverrideMapping>&& overrides, const nsCString& locale,
+      const bool& reset);
+  mozilla::ipc::IPCResult RecvRegisterChromeItem(
+      const ChromeRegistryItem& item);
+
+  mozilla::ipc::IPCResult RecvClearStyleSheetCache(
+      const Maybe<RefPtr<nsIPrincipal>>& aForPrincipal,
+      const Maybe<nsCString>& aBaseDomain);
+
+  mozilla::ipc::IPCResult RecvClearImageCacheFromPrincipal(
+      nsIPrincipal* aPrincipal);
+  mozilla::ipc::IPCResult RecvClearImageCacheFromBaseDomain(
+      const nsCString& aBaseDomain);
+  mozilla::ipc::IPCResult RecvClearImageCache(const bool& privateLoader,
+                                              const bool& chrome);
+
+  PRemoteSpellcheckEngineChild* AllocPRemoteSpellcheckEngineChild();
+
+  bool DeallocPRemoteSpellcheckEngineChild(PRemoteSpellcheckEngineChild*);
+
+  mozilla::ipc::IPCResult RecvSetOffline(const bool& offline);
+
+  mozilla::ipc::IPCResult RecvSetConnectivity(const bool& connectivity);
+  mozilla::ipc::IPCResult RecvSetCaptivePortalState(const int32_t& state);
+  mozilla::ipc::IPCResult RecvSetTRRMode(
+      const nsIDNSService::ResolverMode& mode,
+      const nsIDNSService::ResolverMode& modeFromPref);
+
+  mozilla::ipc::IPCResult RecvBidiKeyboardNotify(const bool& isLangRTL,
+                                                 const bool& haveBidiKeyboards);
+
+  mozilla::ipc::IPCResult RecvNotifyVisited(nsTArray<VisitedQueryResult>&&);
+
+  mozilla::ipc::IPCResult RecvThemeChanged(FullLookAndFeel&&,
+                                           widget::ThemeChangeKind);
+
+  // auto remove when alertfinished is received.
+  nsresult AddRemoteAlertObserver(const nsString& aData,
+                                  nsIObserver* aObserver);
+
+  mozilla::ipc::IPCResult RecvPreferenceUpdate(const Pref& aPref);
+  mozilla::ipc::IPCResult RecvVarUpdate(const GfxVarUpdate& pref);
+
+  mozilla::ipc::IPCResult RecvUpdatePerfStatsCollectionMask(
+      const uint64_t& aMask);
+
+  mozilla::ipc::IPCResult RecvCollectPerfStatsJSON(
+      CollectPerfStatsJSONResolver&& aResolver);
+
+  mozilla::ipc::IPCResult RecvCollectScrollingMetrics(
+      CollectScrollingMetricsResolver&& aResolver);
+
+  mozilla::ipc::IPCResult RecvNotifyAlertsObserver(const nsCString& aType,
+                                                   const nsString& aData);
+
+  mozilla::ipc::IPCResult RecvLoadProcessScript(const nsString& aURL);
+
+  mozilla::ipc::IPCResult RecvAsyncMessage(const nsString& aMsg,
+                                           const ClonedMessageData& aData);
+
+  mozilla::ipc::IPCResult RecvRegisterStringBundles(
+      nsTArray<StringBundleDescriptor>&& stringBundles);
+
+  mozilla::ipc::IPCResult RecvUpdateL10nFileSources(
+      nsTArray<L10nFileSourceDescriptor>&& aDescriptors);
+
+  mozilla::ipc::IPCResult RecvUpdateSharedData(
+      const FileDescriptor& aMapFile, const uint32_t& aMapSize,
+      nsTArray<IPCBlob>&& aBlobs, nsTArray<nsCString>&& aChangedKeys);
+
+  mozilla::ipc::IPCResult RecvFontListChanged();
+  mozilla::ipc::IPCResult RecvForceGlobalReflow(bool aNeedsReframe);
+
+  mozilla::ipc::IPCResult RecvGeolocationUpdate(nsIDOMGeoPosition* aPosition);
+
+  // MOZ_CAN_RUN_SCRIPT_BOUNDARY because we don't have MOZ_CAN_RUN_SCRIPT bits
+  // in IPC code yet.
+  MOZ_CAN_RUN_SCRIPT_BOUNDARY
+  mozilla::ipc::IPCResult RecvGeolocationError(const uint16_t& errorCode);
+
+  mozilla::ipc::IPCResult RecvUpdateDictionaryList(
+      nsTArray<nsCString>&& aDictionaries);
+
+  mozilla::ipc::IPCResult RecvUpdateFontList(SystemFontList&&);
+  mozilla::ipc::IPCResult RecvRebuildFontList(const bool& aFullRebuild);
+  mozilla::ipc::IPCResult RecvFontListShmBlockAdded(
+      const uint32_t& aGeneration, const uint32_t& aIndex,
+      base::SharedMemoryHandle&& aHandle);
+
+  mozilla::ipc::IPCResult RecvUpdateAppLocales(
+      nsTArray<nsCString>&& aAppLocales);
+  mozilla::ipc::IPCResult RecvUpdateRequestedLocales(
+      nsTArray<nsCString>&& aRequestedLocales);
+
+  mozilla::ipc::IPCResult RecvSystemTimezoneChanged();
+
+  mozilla::ipc::IPCResult RecvAddPermission(const IPC::Permission& permission);
+
+  mozilla::ipc::IPCResult RecvRemoveAllPermissions();
+
+  mozilla::ipc::IPCResult RecvFlushMemory(const nsString& reason);
+
+  mozilla::ipc::IPCResult RecvActivateA11y();
+  mozilla::ipc::IPCResult RecvShutdownA11y();
+
+  mozilla::ipc::IPCResult RecvApplicationForeground();
+  mozilla::ipc::IPCResult RecvApplicationBackground();
+  mozilla::ipc::IPCResult RecvGarbageCollect();
+  mozilla::ipc::IPCResult RecvCycleCollect();
+  mozilla::ipc::IPCResult RecvUnlinkGhosts();
+
+  mozilla::ipc::IPCResult RecvAppInfo(
+      const nsCString& version, const nsCString& buildID, const nsCString& name,
+      const nsCString& UAName, const nsCString& ID, const nsCString& vendor,
+      const nsCString& sourceURL, const nsCString& updateURL);
+
+  mozilla::ipc::IPCResult RecvRemoteType(const nsCString& aRemoteType,
+                                         const nsCString& aProfile);
+
+  void PreallocInit();
+
+  // Call RemoteTypePrefix() on the result to remove URIs if you want to use
+  // this for telemetry.
+  const nsACString& GetRemoteType() const override;
+
+  mozilla::ipc::IPCResult RecvInitBlobURLs(
+      nsTArray<BlobURLRegistrationData>&& aRegistations);
+
+  mozilla::ipc::IPCResult RecvInitJSActorInfos(
+      nsTArray<JSProcessActorInfo>&& aContentInfos,
+      nsTArray<JSWindowActorInfo>&& aWindowInfos);
+
+  mozilla::ipc::IPCResult RecvUnregisterJSWindowActor(const nsCString& aName);
+
+  mozilla::ipc::IPCResult RecvUnregisterJSProcessActor(const nsCString& aName);
+
+  mozilla::ipc::IPCResult RecvLastPrivateDocShellDestroyed();
+
+  mozilla::ipc::IPCResult RecvNotifyProcessPriorityChanged(
+      const hal::ProcessPriority& aPriority);
+
+  mozilla::ipc::IPCResult RecvMinimizeMemoryUsage();
+
+  mozilla::ipc::IPCResult RecvLoadAndRegisterSheet(nsIURI* aURI,
+                                                   const uint32_t& aType);
+
+  mozilla::ipc::IPCResult RecvUnregisterSheet(nsIURI* aURI,
+                                              const uint32_t& aType);
+
+  void AddIdleObserver(nsIObserver* aObserver, uint32_t aIdleTimeInS);
+
+  void RemoveIdleObserver(nsIObserver* aObserver, uint32_t aIdleTimeInS);
+
+  mozilla::ipc::IPCResult RecvNotifyIdleObserver(const uint64_t& aObserver,
+                                                 const nsCString& aTopic,
+                                                 const nsString& aData);
+
+  mozilla::ipc::IPCResult RecvUpdateWindow(const uintptr_t& aChildId);
+
+  mozilla::ipc::IPCResult RecvDomainSetChanged(const uint32_t& aSetType,
+                                               const uint32_t& aChangeType,
+                                               nsIURI* aDomain);
+
+  mozilla::ipc::IPCResult RecvShutdownConfirmedHP();
+
+  mozilla::ipc::IPCResult RecvShutdown();
+
+  mozilla::ipc::IPCResult RecvInvokeDragSession(
+      const MaybeDiscarded<WindowContext>& aSourceWindowContext,
+      const MaybeDiscarded<WindowContext>& aSourceTopWindowContext,
+      nsTArray<IPCTransferableData>&& aTransferables, const uint32_t& aAction);
+
+  mozilla::ipc::IPCResult RecvUpdateDragSession(
+      nsTArray<IPCTransferableData>&& aTransferables,
+      EventMessage aEventMessage);
+
+  MOZ_CAN_RUN_SCRIPT_BOUNDARY
+  mozilla::ipc::IPCResult RecvEndDragSession(
+      const bool& aDoneDrag, const bool& aUserCancelled,
+      const mozilla::LayoutDeviceIntPoint& aEndDragPoint,
+      const uint32_t& aKeyModifiers, const uint32_t& aDropEffect);
+
+  mozilla::ipc::IPCResult RecvPush(const nsCString& aScope,
+                                   nsIPrincipal* aPrincipal,
+                                   const nsString& aMessageId);
+
+  mozilla::ipc::IPCResult RecvPushWithData(const nsCString& aScope,
+                                           nsIPrincipal* aPrincipal,
+                                           const nsString& aMessageId,
+                                           nsTArray<uint8_t>&& aData);
+
+  mozilla::ipc::IPCResult RecvPushSubscriptionChange(const nsCString& aScope,
+                                                     nsIPrincipal* aPrincipal);
+
+  mozilla::ipc::IPCResult RecvPushError(const nsCString& aScope,
+                                        nsIPrincipal* aPrincipal,
+                                        const nsString& aMessage,
+                                        const uint32_t& aFlags);
+
+  mozilla::ipc::IPCResult RecvNotifyPushSubscriptionModifiedObservers(
+      const nsCString& aScope, nsIPrincipal* aPrincipal);
+
+  mozilla::ipc::IPCResult RecvRefreshScreens(
+      nsTArray<ScreenDetails>&& aScreens);
+
+  mozilla::ipc::IPCResult RecvNetworkLinkTypeChange(const uint32_t& aType);
+  uint32_t NetworkLinkType() const { return mNetworkLinkType; }
+
+  mozilla::ipc::IPCResult RecvSocketProcessCrashed();
+
+  // Get the directory for IndexedDB files. We query the parent for this and
+  // cache the value
+  nsString& GetIndexedDBPath();
+
+  ContentParentId GetID() const { return mID; }
+
+  bool IsForBrowser() const { return mIsForBrowser; }
+
+  MOZ_CAN_RUN_SCRIPT_BOUNDARY mozilla::ipc::IPCResult RecvConstructBrowser(
+      ManagedEndpoint<PBrowserChild>&& aBrowserEp,
+      ManagedEndpoint<PWindowGlobalChild>&& aWindowEp, const TabId& aTabId,
+      const IPCTabContext& aContext, const WindowGlobalInit& aWindowInit,
+      const uint32_t& aChromeFlags, const ContentParentId& aCpID,
+      const bool& aIsForBrowser, const bool& aIsTopLevel);
+
+  FORWARD_SHMEM_ALLOCATOR_TO(PContentChild)
+
+  void GetAvailableDictionaries(nsTArray<nsCString>& aDictionaries);
+
+#ifdef MOZ_WEBRTC
+  PWebrtcGlobalChild* AllocPWebrtcGlobalChild();
+  bool DeallocPWebrtcGlobalChild(PWebrtcGlobalChild* aActor);
+#endif
+
+  PContentPermissionRequestChild* AllocPContentPermissionRequestChild(
+      Span<const PermissionRequest> aRequests, nsIPrincipal* aPrincipal,
+      nsIPrincipal* aTopLevelPrincipal, const bool& aIsHandlingUserInput,
+      const bool& aMaybeUnsafePermissionDelegate, const TabId& aTabId);
+  bool DeallocPContentPermissionRequestChild(
+      PContentPermissionRequestChild* actor);
+
+  // GetFiles for WebKit/Blink FileSystem API and Directory API must run on the
+  // parent process.
+  void CreateGetFilesRequest(const nsAString& aDirectoryPath,
+                             bool aRecursiveFlag, nsID& aUUID,
+                             GetFilesHelperChild* aChild);
+
+  void DeleteGetFilesRequest(nsID& aUUID, GetFilesHelperChild* aChild);
+
+  mozilla::ipc::IPCResult RecvGetFilesResponse(
+      const nsID& aUUID, const GetFilesResponseResult& aResult);
+
+  mozilla::ipc::IPCResult RecvBlobURLRegistration(
+      const nsCString& aURI, const IPCBlob& aBlob, nsIPrincipal* aPrincipal,
+      const nsCString& aPartitionKey);
+
+  mozilla::ipc::IPCResult RecvBlobURLUnregistration(const nsCString& aURI);
+
+  mozilla::ipc::IPCResult RecvRequestMemoryReport(
+      const uint32_t& generation, const bool& anonymize,
+      const bool& minimizeMemoryUsage, const Maybe<FileDescriptor>& DMDFile,
+      const RequestMemoryReportResolver& aResolver);
+
+#if defined(XP_WIN)
+  mozilla::ipc::IPCResult RecvGetUntrustedModulesData(
+      GetUntrustedModulesDataResolver&& aResolver);
+  mozilla::ipc::IPCResult RecvUnblockUntrustedModulesThread();
+#endif  // defined(XP_WIN)
+
+  mozilla::ipc::IPCResult RecvSetXPCOMProcessAttributes(
+      XPCOMInitData&& aXPCOMInit, const StructuredCloneData& aInitialData,
+      FullLookAndFeel&& aLookAndFeelData, SystemFontList&& aFontList,
+      Maybe<base::SharedMemoryHandle>&& aSharedUASheetHandle,
+      const uintptr_t& aSharedUASheetAddress,
+      nsTArray<base::SharedMemoryHandle>&& aSharedFontListBlocks,
+      const bool& aIsReadyForBackgroundProcessing);
+
+  mozilla::ipc::IPCResult RecvProvideAnonymousTemporaryFile(
+      const uint64_t& aID, const FileDescOrError& aFD);
+
+  mozilla::ipc::IPCResult RecvSetPermissionsWithKey(
+      const nsCString& aPermissionKey, nsTArray<IPC::Permission>&& aPerms);
+
+  mozilla::ipc::IPCResult RecvShareCodeCoverageMutex(
+      CrossProcessMutexHandle aHandle);
+
+  mozilla::ipc::IPCResult RecvFlushCodeCoverageCounters(
+      FlushCodeCoverageCountersResolver&& aResolver);
+
+  mozilla::ipc::IPCResult RecvSetInputEventQueueEnabled();
+
+  mozilla::ipc::IPCResult RecvFlushInputEventQueue();
+
+  mozilla::ipc::IPCResult RecvSuspendInputEventQueue();
+
+  mozilla::ipc::IPCResult RecvResumeInputEventQueue();
+
+  mozilla::ipc::IPCResult RecvAddDynamicScalars(
+      nsTArray<DynamicScalarDefinition>&& aDefs);
+
+  // Get a reference to the font list passed from the chrome process,
+  // for use during gfx initialization.
+  SystemFontList& SystemFontList() { return mFontList; }
+
+  nsTArray<base::SharedMemoryHandle>& SharedFontListBlocks() {
+    return mSharedFontListBlocks;
+  }
+
+  // PURLClassifierChild
+  PURLClassifierChild* AllocPURLClassifierChild(nsIPrincipal* aPrincipal,
+                                                bool* aSuccess);
+  bool DeallocPURLClassifierChild(PURLClassifierChild* aActor);
+
+  // PURLClassifierLocalChild
+  PURLClassifierLocalChild* AllocPURLClassifierLocalChild(
+      nsIURI* aUri, Span<const IPCURLClassifierFeature> aFeatures);
+  bool DeallocPURLClassifierLocalChild(PURLClassifierLocalChild* aActor);
+
+  PSessionStorageObserverChild* AllocPSessionStorageObserverChild();
+
+  bool DeallocPSessionStorageObserverChild(
+      PSessionStorageObserverChild* aActor);
+
+  FullLookAndFeel& BorrowLookAndFeelData() { return mLookAndFeelData; }
+
+  /**
+   * Helper function for protocols that use the GPU process when available.
+   * Overrides FatalError to just be a warning when communicating with the
+   * GPU process since we don't want to crash the content process when the
+   * GPU process crashes.
+   */
+  static void FatalErrorIfNotUsingGPUProcess(const char* const aErrorMsg,
+                                             base::ProcessId aOtherPid);
+
+  using AnonymousTemporaryFileCallback = std::function<void(PRFileDesc*)>;
+  nsresult AsyncOpenAnonymousTemporaryFile(
+      const AnonymousTemporaryFileCallback& aCallback);
+
+  mozilla::ipc::IPCResult RecvSaveRecording(const FileDescriptor& aFile);
+
+  mozilla::ipc::IPCResult RecvCrossProcessRedirect(
+      RedirectToRealChannelArgs&& aArgs,
+      nsTArray<Endpoint<extensions::PStreamFilterParent>>&& aEndpoints,
+      CrossProcessRedirectResolver&& aResolve);
+
+  mozilla::ipc::IPCResult RecvStartDelayedAutoplayMediaComponents(
+      const MaybeDiscarded<BrowsingContext>& aContext);
+
+  mozilla::ipc::IPCResult RecvUpdateMediaControlAction(
+      const MaybeDiscarded<BrowsingContext>& aContext,
+      const MediaControlAction& aAction);
+
+  // See `BrowsingContext::mEpochs` for an explanation of this field.
+  uint64_t GetBrowsingContextFieldEpoch() const {
+    return mBrowsingContextFieldEpoch;
+  }
+  uint64_t NextBrowsingContextFieldEpoch() {
+    mBrowsingContextFieldEpoch++;
+    return mBrowsingContextFieldEpoch;
+  }
+
+  mozilla::ipc::IPCResult RecvOnAllowAccessFor(
+      const MaybeDiscarded<BrowsingContext>& aContext,
+      const nsCString& aTrackingOrigin, uint32_t aCookieBehavior,
+      const ContentBlockingNotifier::StorageAccessPermissionGrantedReason&
+          aReason);
+
+  mozilla::ipc::IPCResult RecvOnContentBlockingDecision(
+      const MaybeDiscarded<BrowsingContext>& aContext,
+      const ContentBlockingNotifier::BlockingDecision& aDecision,
+      uint32_t aRejectedReason);
+
+#ifdef NIGHTLY_BUILD
+  // Fetch the current number of pending input events.
+  //
+  // NOTE: This method performs an atomic read, and is safe to call from all
+  // threads.
+  uint32_t GetPendingInputEvents() { return mPendingInputEvents; }
+#endif
+
+#if defined(MOZ_SANDBOX) && defined(MOZ_DEBUG) && defined(ENABLE_TESTS)
+  mozilla::ipc::IPCResult RecvInitSandboxTesting(
+      Endpoint<PSandboxTestingChild>&& aEndpoint);
+#endif
+
+ private:
+  static void ForceKillTimerCallback(nsITimer* aTimer, void* aClosure);
+  void StartForceKillTimer();
+
+  void ShutdownInternal();
+
+  mozilla::ipc::IPCResult GetResultForRenderingInitFailure(
+      base::ProcessId aOtherPid);
+
+  virtual void ActorDestroy(ActorDestroyReason why) override;
+
+  virtual void ProcessingError(Result aCode, const char* aReason) override;
+
+  mozilla::ipc::IPCResult RecvCreateBrowsingContext(
+      uint64_t aGroupId, BrowsingContext::IPCInitializer&& aInit);
+
+  mozilla::ipc::IPCResult RecvDiscardBrowsingContext(
+      const MaybeDiscarded<BrowsingContext>& aContext, bool aDoDiscard,
+      DiscardBrowsingContextResolver&& aResolve);
+
+  mozilla::ipc::IPCResult RecvRegisterBrowsingContextGroup(
+      uint64_t aGroupId, nsTArray<SyncedContextInitializer>&& aInits);
+  mozilla::ipc::IPCResult RecvDestroyBrowsingContextGroup(uint64_t aGroupId);
+
+  mozilla::ipc::IPCResult RecvWindowClose(
+      const MaybeDiscarded<BrowsingContext>& aContext, bool aTrustedCaller);
+  mozilla::ipc::IPCResult RecvWindowFocus(
+      const MaybeDiscarded<BrowsingContext>& aContext, CallerType aCallerType,
+      uint64_t aActionId);
+  mozilla::ipc::IPCResult RecvWindowBlur(
+      const MaybeDiscarded<BrowsingContext>& aContext, CallerType aCallerType);
+  MOZ_CAN_RUN_SCRIPT_BOUNDARY mozilla::ipc::IPCResult RecvRaiseWindow(
+      const MaybeDiscarded<BrowsingContext>& aContext, CallerType aCallerType,
+      uint64_t aActionId);
+  MOZ_CAN_RUN_SCRIPT_BOUNDARY mozilla::ipc::IPCResult RecvAdjustWindowFocus(
+      const MaybeDiscarded<BrowsingContext>& aContext, bool aIsVisible,
+      uint64_t aActionId);
+  MOZ_CAN_RUN_SCRIPT_BOUNDARY mozilla::ipc::IPCResult RecvClearFocus(
+      const MaybeDiscarded<BrowsingContext>& aContext);
+  mozilla::ipc::IPCResult RecvSetFocusedBrowsingContext(
+      const MaybeDiscarded<BrowsingContext>& aContext, uint64_t aActionId);
+  mozilla::ipc::IPCResult RecvSetActiveBrowsingContext(
+      const MaybeDiscarded<BrowsingContext>& aContext, uint64_t aActionId);
+  mozilla::ipc::IPCResult RecvAbortOrientationPendingPromises(
+      const MaybeDiscarded<BrowsingContext>& aContext);
+  mozilla::ipc::IPCResult RecvUnsetActiveBrowsingContext(
+      const MaybeDiscarded<BrowsingContext>& aContext, uint64_t aActionId);
+  mozilla::ipc::IPCResult RecvSetFocusedElement(
+      const MaybeDiscarded<BrowsingContext>& aContext, bool aNeedsFocus);
+  mozilla::ipc::IPCResult RecvFinalizeFocusOuter(
+      const MaybeDiscarded<BrowsingContext>& aContext, bool aCanFocus,
+      CallerType aCallerType);
+  MOZ_CAN_RUN_SCRIPT_BOUNDARY mozilla::ipc::IPCResult RecvBlurToChild(
+      const MaybeDiscarded<BrowsingContext>& aFocusedBrowsingContext,
+      const MaybeDiscarded<BrowsingContext>& aBrowsingContextToClear,
+      const MaybeDiscarded<BrowsingContext>& aAncestorBrowsingContextToFocus,
+      bool aIsLeavingDocument, bool aAdjustWidget, uint64_t aActionId);
+  mozilla::ipc::IPCResult RecvSetupFocusedAndActive(
+      const MaybeDiscarded<BrowsingContext>& aFocusedBrowsingContext,
+      uint64_t aActionIdForFocused,
+      const MaybeDiscarded<BrowsingContext>& aActiveBrowsingContext,
+      uint64_t aActionIdForActive);
+  mozilla::ipc::IPCResult RecvReviseActiveBrowsingContext(
+      uint64_t aOldActionId,
+      const MaybeDiscarded<BrowsingContext>& aActiveBrowsingContext,
+      uint64_t aNewActionId);
+  mozilla::ipc::IPCResult RecvReviseFocusedBrowsingContext(
+      uint64_t aOldActionId,
+      const MaybeDiscarded<BrowsingContext>& aFocusedBrowsingContext,
+      uint64_t aNewActionId);
+  mozilla::ipc::IPCResult RecvMaybeExitFullscreen(
+      const MaybeDiscarded<BrowsingContext>& aContext);
+
+  mozilla::ipc::IPCResult RecvWindowPostMessage(
+      const MaybeDiscarded<BrowsingContext>& aContext,
+      const ClonedOrErrorMessageData& aMessage, const PostMessageData& aData);
+
+  mozilla::ipc::IPCResult RecvCommitBrowsingContextTransaction(
+      const MaybeDiscarded<BrowsingContext>& aContext,
+      BrowsingContext::BaseTransaction&& aTransaction, uint64_t aEpoch);
+
+  mozilla::ipc::IPCResult RecvCommitWindowContextTransaction(
+      const MaybeDiscarded<WindowContext>& aContext,
+      WindowContext::BaseTransaction&& aTransaction, uint64_t aEpoch);
+
+  mozilla::ipc::IPCResult RecvCreateWindowContext(
+      WindowContext::IPCInitializer&& aInit);
+  mozilla::ipc::IPCResult RecvDiscardWindowContext(
+      uint64_t aContextId, DiscardWindowContextResolver&& aResolve);
+
+  mozilla::ipc::IPCResult RecvScriptError(
+      const nsString& aMessage, const nsString& aSourceName,
+      const nsString& aSourceLine, const uint32_t& aLineNumber,
+      const uint32_t& aColNumber, const uint32_t& aFlags,
+      const nsCString& aCategory, const bool& aFromPrivateWindow,
+      const uint64_t& aInnerWindowId, const bool& aFromChromeContext);
+
+  mozilla::ipc::IPCResult RecvReportFrameTimingData(
+      const LoadInfoArgs& loadInfoArgs, const nsString& entryName,
+      const nsString& initiatorType, UniquePtr<PerformanceTimingData>&& aData);
+
+  mozilla::ipc::IPCResult RecvLoadURI(
+      const MaybeDiscarded<BrowsingContext>& aContext,
+      nsDocShellLoadState* aLoadState, bool aSetNavigating,
+      LoadURIResolver&& aResolve);
+
+  mozilla::ipc::IPCResult RecvInternalLoad(nsDocShellLoadState* aLoadState);
+
+  mozilla::ipc::IPCResult RecvDisplayLoadError(
+      const MaybeDiscarded<BrowsingContext>& aContext, const nsAString& aURI);
+
+  mozilla::ipc::IPCResult RecvGoBack(
+      const MaybeDiscarded<BrowsingContext>& aContext,
+      const Maybe<int32_t>& aCancelContentJSEpoch, bool aRequireUserInteraction,
+      bool aUserActivation);
+  mozilla::ipc::IPCResult RecvGoForward(
+      const MaybeDiscarded<BrowsingContext>& aContext,
+      const Maybe<int32_t>& aCancelContentJSEpoch, bool aRequireUserInteraction,
+      bool aUserActivation);
+  mozilla::ipc::IPCResult RecvGoToIndex(
+      const MaybeDiscarded<BrowsingContext>& aContext, const int32_t& aIndex,
+      const Maybe<int32_t>& aCancelContentJSEpoch, bool aUserActivation);
+  mozilla::ipc::IPCResult RecvReload(
+      const MaybeDiscarded<BrowsingContext>& aContext,
+      const uint32_t aReloadFlags);
+  mozilla::ipc::IPCResult RecvStopLoad(
+      const MaybeDiscarded<BrowsingContext>& aContext,
+      const uint32_t aStopFlags);
+
+  mozilla::ipc::IPCResult RecvRawMessage(
+      const JSActorMessageMeta& aMeta, const Maybe<ClonedMessageData>& aData,
+      const Maybe<ClonedMessageData>& aStack);
+
+  already_AddRefed<JSActor> InitJSActor(JS::Handle<JSObject*> aMaybeActor,
+                                        const nsACString& aName,
+                                        ErrorResult& aRv) override;
+  mozilla::ipc::IProtocol* AsNativeActor() override { return this; }
+
+  mozilla::ipc::IPCResult RecvHistoryCommitIndexAndLength(
+      const MaybeDiscarded<BrowsingContext>& aContext, const uint32_t& aIndex,
+      const uint32_t& aLength, const nsID& aChangeID);
+
+  mozilla::ipc::IPCResult RecvGetLayoutHistoryState(
+      const MaybeDiscarded<BrowsingContext>& aContext,
+      GetLayoutHistoryStateResolver&& aResolver);
+
+  mozilla::ipc::IPCResult RecvDispatchLocationChangeEvent(
+      const MaybeDiscarded<BrowsingContext>& aContext);
+
+  mozilla::ipc::IPCResult RecvDispatchBeforeUnloadToSubtree(
+      const MaybeDiscarded<BrowsingContext>& aStartingAt,
+      DispatchBeforeUnloadToSubtreeResolver&& aResolver);
+
+  mozilla::ipc::IPCResult RecvDecoderSupportedMimeTypes(
+      nsTArray<nsCString>&& aSupportedTypes);
+
+  mozilla::ipc::IPCResult RecvInitNextGenLocalStorageEnabled(
+      const bool& aEnabled);
+
+ public:
+  static void DispatchBeforeUnloadToSubtree(
+      BrowsingContext* aStartingAt,
+      const DispatchBeforeUnloadToSubtreeResolver& aResolver);
+
+  hal::ProcessPriority GetProcessPriority() const { return mProcessPriority; }
+
+  hal::PerformanceHintSession* PerformanceHintSession() const {
+    return mPerformanceHintSession.get();
+  }
+
+  // Returns the target work duration for the PerformanceHintSession, based on
+  // the refresh interval. Estimate that we want the tick to complete in at most
+  // half of the refresh period. This is fairly arbitrary and can be tweaked
+  // later.
+  static TimeDuration GetPerformanceHintTarget(TimeDuration aRefreshInterval) {
+    return aRefreshInterval / int64_t(2);
+  }
+
+ private:
+  void AddProfileToProcessName(const nsACString& aProfile);
+  mozilla::ipc::IPCResult RecvFlushFOGData(FlushFOGDataResolver&& aResolver);
+
+  mozilla::ipc::IPCResult RecvUpdateMediaCodecsSupported(
+      RemoteDecodeIn aLocation, const media::MediaCodecsSupported& aSupported);
+
+#ifdef NIGHTLY_BUILD
+  virtual void OnChannelReceivedMessage(const Message& aMsg) override;
+
+  virtual PContentChild::Result OnMessageReceived(const Message& aMsg) override;
+
+  virtual PContentChild::Result OnMessageReceived(
+      const Message& aMsg, UniquePtr<Message>& aReply) override;
+#endif
+
+  void ConfigureThreadPerformanceHints(const hal::ProcessPriority& aPriority);
+
+  nsTArray<mozilla::UniquePtr<AlertObserver>> mAlertObservers;
+  RefPtr<ConsoleListener> mConsoleListener;
+
+  nsTHashSet<nsIObserver*> mIdleObservers;
+
+  nsTArray<nsCString> mAvailableDictionaries;
+
+  // Temporary storage for a list of available fonts, passed from the
+  // parent process and used to initialize gfx in the child. Currently used
+  // only on MacOSX and Linux.
+  dom::SystemFontList mFontList;
+  // Temporary storage for look and feel data.
+  FullLookAndFeel mLookAndFeelData;
+  // Temporary storage for list of shared-fontlist memory blocks.
+  nsTArray<base::SharedMemoryHandle> mSharedFontListBlocks;
+
+  /**
+   * An ID unique to the process containing our corresponding
+   * content parent.
+   *
+   * We expect our content parent to set this ID immediately after opening a
+   * channel to us.
+   */
+  ContentParentId mID;
+
+  AppInfo mAppInfo;
+
+  bool mIsForBrowser;
+  nsCString mRemoteType = NOT_REMOTE_TYPE;
+  bool mIsAlive;
+  nsCString mProcessName;
+
+  static ContentChild* sSingleton;
+
+  class ShutdownCanary;
+  static StaticAutoPtr<ShutdownCanary> sShutdownCanary;
+
+  nsCOMPtr<nsIDomainPolicy> mPolicy;
+  nsCOMPtr<nsITimer> mForceKillTimer;
+
+  RefPtr<ipc::SharedMap> mSharedData;
+
+  RefPtr<ChildProfilerController> mProfilerController;
+
+#if defined(XP_MACOSX) && defined(MOZ_SANDBOX)
+  nsCOMPtr<nsIFile> mProfileDir;
+#endif
+
+  // Hashtable to keep track of the pending GetFilesHelper objects.
+  // This GetFilesHelperChild objects are removed when RecvGetFilesResponse is
+  // received.
+  nsRefPtrHashtable<nsIDHashKey, GetFilesHelperChild> mGetFilesPendingRequests;
+
+  nsClassHashtable<nsUint64HashKey, AnonymousTemporaryFileCallback>
+      mPendingAnonymousTemporaryFiles;
+
+  mozilla::Atomic<bool> mShuttingDown;
+
+#ifdef NIGHTLY_BUILD
+  // NOTE: This member is atomic because it can be accessed from
+  // off-main-thread.
+  mozilla::Atomic<uint32_t> mPendingInputEvents;
+#endif
+
+  uint32_t mNetworkLinkType = 0;
+
+  // See `BrowsingContext::mEpochs` for an explanation of this field.
+  uint64_t mBrowsingContextFieldEpoch = 0;
+
+  hal::ProcessPriority mProcessPriority = hal::PROCESS_PRIORITY_UNKNOWN;
+
+  // Session created when the process priority is FOREGROUND to ensure high
+  // priority scheduling of important threads. (Currently main thread and style
+  // threads.) The work duration is reported by the RefreshDriverTimer.
+  UniquePtr<hal::PerformanceHintSession> mPerformanceHintSession;
+};
+
+inline nsISupports* ToSupports(mozilla::dom::ContentChild* aContentChild) {
+  return static_cast<nsIDOMProcessChild*>(aContentChild);
+}
+
+}  // namespace dom
+}  // namespace mozilla
+
+#endif  // mozilla_dom_ContentChild_h