/* -*- 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/. */

#ifndef mozilla_dom_ContentChild_h

#define mozilla_dom_ContentChild_h

#include "mozilla/Atomics.h"

#include "mozilla/Attributes.h"

#include "mozilla/dom/ContentBridgeParent.h"

#include "mozilla/dom/nsIContentChild.h"

#include "mozilla/dom/PBrowserOrId.h"

#include "mozilla/dom/PContentChild.h"

#include "mozilla/StaticPtr.h"

#include "nsAutoPtr.h"

#include "nsHashKeys.h"

#include "nsIObserver.h"

#include "nsTHashtable.h"

#include "nsRefPtrHashtable.h"

#include "nsWeakPtr.h"

#include "nsIWindowProvider.h"

#if defined(XP_MACOSX) && defined(MOZ_CONTENT_SANDBOX)

#include "nsIFile.h"

#endif

struct ChromePackage;

class nsIObserver;

struct SubstitutionMapping;

struct OverrideMapping;

class nsIDomainPolicy;

class nsIURIClassifierCallback;

struct LookAndFeelInt;

class nsDocShellLoadInfo;

namespace mozilla {

class RemoteSpellcheckEngineChild;

class ChildProfilerController;

using mozilla::loader::PScriptCacheChild;

#if !defined(XP_WIN)

// Returns whether or not the currently running build is an unpackaged

// developer build. This check is implemented by looking for omni.ja in the

// the obj/dist dir. We use this routine to detect when the build dir will

// use symlinks to the repo and object dir. On Windows, dev builds don't

// use symlinks.

bool IsDevelopmentBuild();

#endif /* !XP_WIN */

#if defined(XP_MACOSX)

// Return the repo directory and the repo object directory respectively. These

// should only be used on Mac developer builds to determine the path to the

// repo or object directory.

nsresult GetRepoDir(nsIFile **aRepoDir);

nsresult GetObjDir(nsIFile **aObjDir);

#endif /* XP_MACOSX */

namespace ipc {

class OptionalURIParams;

class URIParams;

}// namespace ipc

namespace dom {

namespace ipc {

class SharedMap;

}

class AlertObserver;

class ConsoleListener;

class ClonedMessageData;

class TabChild;

class GetFilesHelperChild;

class FileCreatorHelper;

class ContentChild final : public PContentChild

                         , public nsIWindowProvider

                         , public nsIContentChild

{

  typedef mozilla::dom::ClonedMessageData ClonedMessageData;

  typedef mozilla::ipc::FileDescriptor FileDescriptor;

  typedef mozilla::ipc::OptionalURIParams OptionalURIParams;

  typedef mozilla::ipc::PFileDescriptorSetChild PFileDescriptorSetChild;

  typedef mozilla::ipc::URIParams URIParams;

public:

  NS_DECL_NSIWINDOWPROVIDER

  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;

  };

  nsresult

  ProvideWindowCommon(TabChild* aTabOpener,

                      mozIDOMWindowProxy* aOpener,

                      bool aIframeMoz,

                      uint32_t aChromeFlags,

                      bool aCalledFromJS,

                      bool aPositionSpecified,

                      bool aSizeSpecified,

                      nsIURI* aURI,

                      const nsAString& aName,

                      const nsACString& aFeatures,

                      bool aForceNoOpener,

                      nsDocShellLoadInfo* aLoadInfo,

                      bool* aWindowIsNew,

                      mozIDOMWindowProxy** aReturn);

  bool Init(MessageLoop* aIOLoop,

            base::ProcessId aParentPid,

            const char* aParentBuildID,

            IPC::Channel* aChannel,

            uint64_t aChildID,

            bool aIsForBrowser);

  void InitXPCOM(const XPCOMInitData& aXPCOMInit,

                 const mozilla::dom::ipc::StructuredCloneData& aInitialData);

  void InitGraphicsDeviceData(const ContentDeviceData& aData);

  static ContentChild* GetSingleton()

  {

    return sSingleton;

  }

  const AppInfo& GetAppInfo()

  {

    return mAppInfo;

  }

  void SetProcessName(const nsAString& aName);

  void GetProcessName(nsAString& aName) const;

  void GetProcessName(nsACString& aName) const;

#if defined(XP_MACOSX) && defined(MOZ_CONTENT_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 void UpdateCookieStatus(nsIChannel *aChannel);

  mozilla::ipc::IPCResult

  RecvInitContentBridgeChild(Endpoint<PContentBridgeChild>&& aEndpoint) override;

  mozilla::ipc::IPCResult

  RecvInitGMPService(Endpoint<PGMPServiceChild>&& aGMPService) override;

  mozilla::ipc::IPCResult

  RecvInitProfiler(Endpoint<PProfilerChild>&& aEndpoint) override;

  mozilla::ipc::IPCResult

  RecvGMPsChanged(nsTArray<GMPCapabilityData>&& capabilities) override;

  mozilla::ipc::IPCResult

  RecvInitProcessHangMonitor(Endpoint<PProcessHangMonitorChild>&& aHangMonitor) override;

  mozilla::ipc::IPCResult

  RecvInitRendering(

    Endpoint<PCompositorManagerChild>&& aCompositor,

    Endpoint<PImageBridgeChild>&& aImageBridge,

    Endpoint<PVRManagerChild>&& aVRBridge,

    Endpoint<PVideoDecoderManagerChild>&& aVideoManager,

    nsTArray<uint32_t>&& namespaces) override;

  mozilla::ipc::IPCResult

  RecvRequestPerformanceMetrics(const nsID& aID) override;

  mozilla::ipc::IPCResult

  RecvReinitRendering(

    Endpoint<PCompositorManagerChild>&& aCompositor,

    Endpoint<PImageBridgeChild>&& aImageBridge,

    Endpoint<PVRManagerChild>&& aVRBridge,

    Endpoint<PVideoDecoderManagerChild>&& aVideoManager,

    nsTArray<uint32_t>&& namespaces) override;

  virtual mozilla::ipc::IPCResult RecvAudioDefaultDeviceChange() override;

  mozilla::ipc::IPCResult RecvReinitRenderingForDeviceReset() override;

  virtual mozilla::ipc::IPCResult RecvSetProcessSandbox(const MaybeFileDesc& aBroker) override;

  virtual PBrowserChild* AllocPBrowserChild(const TabId& aTabId,

                                            const TabId& aSameTabGroupAs,

                                            const IPCTabContext& aContext,

                                            const uint32_t& aChromeFlags,

                                            const ContentParentId& aCpID,

                                            const bool& aIsForBrowser) override;

  virtual bool DeallocPBrowserChild(PBrowserChild*) override;

  virtual PIPCBlobInputStreamChild*

  AllocPIPCBlobInputStreamChild(const nsID& aID,

                                const uint64_t& aSize) override;

  virtual bool

  DeallocPIPCBlobInputStreamChild(PIPCBlobInputStreamChild* aActor) override;

  virtual PHalChild* AllocPHalChild() override;

  virtual bool DeallocPHalChild(PHalChild*) override;

  virtual PHeapSnapshotTempFileHelperChild*

  AllocPHeapSnapshotTempFileHelperChild() override;

  virtual bool

  DeallocPHeapSnapshotTempFileHelperChild(PHeapSnapshotTempFileHelperChild*) override;

  virtual PCycleCollectWithLogsChild*

  AllocPCycleCollectWithLogsChild(const bool& aDumpAllTraces,

                                  const FileDescriptor& aGCLog,

                                  const FileDescriptor& aCCLog) override;

  virtual bool

  DeallocPCycleCollectWithLogsChild(PCycleCollectWithLogsChild* aActor) override;

  virtual mozilla::ipc::IPCResult

  RecvPCycleCollectWithLogsConstructor(PCycleCollectWithLogsChild* aChild,

                                       const bool& aDumpAllTraces,

                                       const FileDescriptor& aGCLog,

                                       const FileDescriptor& aCCLog) override;

  virtual PWebBrowserPersistDocumentChild*

  AllocPWebBrowserPersistDocumentChild(PBrowserChild* aBrowser,

                                       const uint64_t& aOuterWindowID) override;

  virtual mozilla::ipc::IPCResult

  RecvPWebBrowserPersistDocumentConstructor(PWebBrowserPersistDocumentChild *aActor,

                                            PBrowserChild *aBrowser,

                                            const uint64_t& aOuterWindowID) override;

  virtual bool

  DeallocPWebBrowserPersistDocumentChild(PWebBrowserPersistDocumentChild* aActor) override;

  virtual PTestShellChild* AllocPTestShellChild() override;

  virtual bool DeallocPTestShellChild(PTestShellChild*) override;

  virtual mozilla::ipc::IPCResult RecvPTestShellConstructor(PTestShellChild*) override;

  virtual PScriptCacheChild*

  AllocPScriptCacheChild(const FileDescOrError& cacheFile,

                         const bool& wantCacheData) override;

  virtual bool DeallocPScriptCacheChild(PScriptCacheChild*) override;

  virtual mozilla::ipc::IPCResult

  RecvPScriptCacheConstructor(PScriptCacheChild*,

                              const FileDescOrError& cacheFile,

                              const bool& wantCacheData) override;

  jsipc::CPOWManager* GetCPOWManager() override;

  virtual PNeckoChild* AllocPNeckoChild() override;

  virtual bool DeallocPNeckoChild(PNeckoChild*) override;

  virtual PPrintingChild* AllocPPrintingChild() override;

  virtual bool DeallocPPrintingChild(PPrintingChild*) override;

  virtual PChildToParentStreamChild*

  SendPChildToParentStreamConstructor(PChildToParentStreamChild*) override;

  virtual PChildToParentStreamChild* AllocPChildToParentStreamChild() override;

  virtual bool DeallocPChildToParentStreamChild(PChildToParentStreamChild*) override;

  virtual PParentToChildStreamChild* AllocPParentToChildStreamChild() override;

  virtual bool DeallocPParentToChildStreamChild(PParentToChildStreamChild*) override;

  virtual PPSMContentDownloaderChild*

  AllocPPSMContentDownloaderChild( const uint32_t& aCertType) override;

  virtual bool

  DeallocPPSMContentDownloaderChild(PPSMContentDownloaderChild* aDownloader) override;

  virtual PExternalHelperAppChild*

  AllocPExternalHelperAppChild(const OptionalURIParams& uri,

                               const nsCString& aMimeContentType,

                               const nsCString& aContentDisposition,

                               const uint32_t& aContentDispositionHint,

                               const nsString& aContentDispositionFilename,

                               const bool& aForceSave,

                               const int64_t& aContentLength,

                               const bool& aWasFileChannel,

                               const OptionalURIParams& aReferrer,

                               PBrowserChild* aBrowser) override;

  virtual bool

  DeallocPExternalHelperAppChild(PExternalHelperAppChild *aService) override;

  virtual PHandlerServiceChild* AllocPHandlerServiceChild() override;

  virtual bool DeallocPHandlerServiceChild(PHandlerServiceChild*) override;

  virtual PMediaChild* AllocPMediaChild() override;

  virtual bool DeallocPMediaChild(PMediaChild* aActor) override;

  virtual PPresentationChild* AllocPPresentationChild() override;

  virtual bool DeallocPPresentationChild(PPresentationChild* aActor) override;

  virtual mozilla::ipc::IPCResult

  RecvNotifyPresentationReceiverLaunched(PBrowserChild* aIframe,

                                         const nsString& aSessionId) override;

  virtual mozilla::ipc::IPCResult

  RecvNotifyPresentationReceiverCleanUp(const nsString& aSessionId) override;

  virtual mozilla::ipc::IPCResult RecvNotifyEmptyHTTPCache() override;

  virtual PSpeechSynthesisChild* AllocPSpeechSynthesisChild() override;

  virtual bool DeallocPSpeechSynthesisChild(PSpeechSynthesisChild* aActor) override;

  virtual mozilla::ipc::IPCResult RecvRegisterChrome(InfallibleTArray<ChromePackage>&& packages,

                                                     InfallibleTArray<SubstitutionMapping>&& resources,

                                                     InfallibleTArray<OverrideMapping>&& overrides,

                                                     const nsCString& locale,

                                                     const bool& reset) override;

  virtual mozilla::ipc::IPCResult RecvRegisterChromeItem(const ChromeRegistryItem& item) override;

  virtual mozilla::ipc::IPCResult RecvClearImageCache(const bool& privateLoader,

                                                      const bool& chrome) override;

  virtual mozilla::jsipc::PJavaScriptChild* AllocPJavaScriptChild() override;

  virtual bool DeallocPJavaScriptChild(mozilla::jsipc::PJavaScriptChild*) override;

  virtual PRemoteSpellcheckEngineChild* AllocPRemoteSpellcheckEngineChild() override;

  virtual bool DeallocPRemoteSpellcheckEngineChild(PRemoteSpellcheckEngineChild*) override;

  virtual mozilla::ipc::IPCResult RecvSetOffline(const bool& offline) override;

  virtual mozilla::ipc::IPCResult RecvSetConnectivity(const bool& connectivity) override;

  virtual mozilla::ipc::IPCResult RecvSetCaptivePortalState(const int32_t& state) override;

  virtual mozilla::ipc::IPCResult RecvBidiKeyboardNotify(const bool& isLangRTL,

                                                         const bool& haveBidiKeyboards) override;

  virtual mozilla::ipc::IPCResult RecvNotifyVisited(nsTArray<URIParams>&& aURIs) override;

  // auto remove when alertfinished is received.

  nsresult AddRemoteAlertObserver(const nsString& aData, nsIObserver* aObserver);

  virtual mozilla::ipc::IPCResult RecvPreferenceUpdate(const Pref& aPref) override;

  virtual mozilla::ipc::IPCResult RecvVarUpdate(const GfxVarUpdate& pref) override;

  virtual mozilla::ipc::IPCResult RecvDataStoragePut(const nsString& aFilename,

                                                     const DataStorageItem& aItem) override;

  virtual mozilla::ipc::IPCResult RecvDataStorageRemove(const nsString& aFilename,

                                                        const nsCString& aKey,

                                                        const DataStorageType& aType) override;

  virtual mozilla::ipc::IPCResult RecvDataStorageClear(const nsString& aFilename) override;

  virtual mozilla::ipc::IPCResult RecvNotifyAlertsObserver(const nsCString& aType,

                                                           const nsString& aData) override;

  virtual mozilla::ipc::IPCResult RecvLoadProcessScript(const nsString& aURL) override;

  virtual mozilla::ipc::IPCResult RecvAsyncMessage(const nsString& aMsg,

                                                   InfallibleTArray<CpowEntry>&& aCpows,

                                                   const IPC::Principal& aPrincipal,

                                                   const ClonedMessageData& aData) override;

  mozilla::ipc::IPCResult RecvRegisterStringBundles(nsTArray<StringBundleDescriptor>&& stringBundles) override;

  mozilla::ipc::IPCResult RecvUpdateSharedData(const FileDescriptor& aMapFile,

                                               const uint32_t& aMapSize,

                                               nsTArray<IPCBlob>&& aBlobs,

                                               nsTArray<nsCString>&& aChangedKeys) override;

  virtual mozilla::ipc::IPCResult RecvGeolocationUpdate(nsIDOMGeoPosition* aPosition) override;

  virtual mozilla::ipc::IPCResult RecvGeolocationError(const uint16_t& errorCode) override;

  virtual mozilla::ipc::IPCResult RecvUpdateDictionaryList(InfallibleTArray<nsString>&& aDictionaries) override;

  virtual mozilla::ipc::IPCResult RecvUpdateFontList(InfallibleTArray<SystemFontListEntry>&& aFontList) override;

  virtual mozilla::ipc::IPCResult RecvUpdateAppLocales(nsTArray<nsCString>&& aAppLocales) override;

  virtual mozilla::ipc::IPCResult RecvUpdateRequestedLocales(nsTArray<nsCString>&& aRequestedLocales) override;

  virtual mozilla::ipc::IPCResult RecvClearSiteDataReloadNeeded(const nsString& aOrigin) override;

  virtual mozilla::ipc::IPCResult RecvAddPermission(const IPC::Permission& permission) override;

  virtual mozilla::ipc::IPCResult RecvRemoveAllPermissions() override;

  virtual mozilla::ipc::IPCResult RecvFlushMemory(const nsString& reason) override;

  virtual mozilla::ipc::IPCResult RecvActivateA11y(const uint32_t& aMainChromeTid,

                                                   const uint32_t& aMsaaID) override;

  virtual mozilla::ipc::IPCResult RecvShutdownA11y() override;

  virtual mozilla::ipc::IPCResult RecvGarbageCollect() override;

  virtual mozilla::ipc::IPCResult RecvCycleCollect() override;

  virtual mozilla::ipc::IPCResult RecvUnlinkGhosts() override;

  virtual 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) override;

  virtual mozilla::ipc::IPCResult RecvRemoteType(const nsString& aRemoteType) override;

  const nsAString& GetRemoteType() const;

  virtual mozilla::ipc::IPCResult

  RecvInitServiceWorkers(const ServiceWorkerConfiguration& aConfig) override;

  virtual mozilla::ipc::IPCResult

  RecvInitBlobURLs(nsTArray<BlobURLRegistrationData>&& aRegistations) override;

  virtual mozilla::ipc::IPCResult RecvLastPrivateDocShellDestroyed() override;

  virtual mozilla::ipc::IPCResult

  RecvNotifyProcessPriorityChanged(const hal::ProcessPriority& aPriority) override;

  virtual mozilla::ipc::IPCResult RecvMinimizeMemoryUsage() override;

  virtual mozilla::ipc::IPCResult RecvLoadAndRegisterSheet(const URIParams& aURI,

                                                           const uint32_t& aType) override;

  virtual mozilla::ipc::IPCResult RecvUnregisterSheet(const URIParams& aURI,

                                                      const uint32_t& aType) override;

  void AddIdleObserver(nsIObserver* aObserver, uint32_t aIdleTimeInS);

  void RemoveIdleObserver(nsIObserver* aObserver, uint32_t aIdleTimeInS);

  virtual mozilla::ipc::IPCResult RecvNotifyIdleObserver(const uint64_t& aObserver,

                                                         const nsCString& aTopic,

                                                         const nsString& aData) override;

  virtual mozilla::ipc::IPCResult RecvUpdateWindow(const uintptr_t& aChildId) override;

  virtual mozilla::ipc::IPCResult RecvDomainSetChanged(const uint32_t& aSetType,

                                                       const uint32_t& aChangeType,

                                                       const OptionalURIParams& aDomain) override;

  virtual mozilla::ipc::IPCResult RecvShutdown() override;

  virtual mozilla::ipc::IPCResult

  RecvInvokeDragSession(nsTArray<IPCDataTransfer>&& aTransfers,

                        const uint32_t& aAction) override;

  virtual mozilla::ipc::IPCResult RecvEndDragSession(const bool& aDoneDrag,

                                                     const bool& aUserCancelled,

                                                     const mozilla::LayoutDeviceIntPoint& aEndDragPoint,

                                                     const uint32_t& aKeyModifiers) override;

  virtual mozilla::ipc::IPCResult

  RecvPush(const nsCString& aScope,

           const IPC::Principal& aPrincipal,

           const nsString& aMessageId) override;

  virtual mozilla::ipc::IPCResult

  RecvPushWithData(const nsCString& aScope,

                   const IPC::Principal& aPrincipal,

                   const nsString& aMessageId,

                   InfallibleTArray<uint8_t>&& aData) override;

  virtual mozilla::ipc::IPCResult

  RecvPushSubscriptionChange(const nsCString& aScope,

                             const IPC::Principal& aPrincipal) override;

  virtual mozilla::ipc::IPCResult

  RecvPushError(const nsCString& aScope, const IPC::Principal& aPrincipal,

                const nsString& aMessage, const uint32_t& aFlags) override;

  virtual mozilla::ipc::IPCResult

  RecvNotifyPushSubscriptionModifiedObservers(const nsCString& aScope,

                                              const IPC::Principal& aPrincipal) override;

  virtual mozilla::ipc::IPCResult RecvActivate(PBrowserChild* aTab) override;

  virtual mozilla::ipc::IPCResult RecvDeactivate(PBrowserChild* aTab) override;

  mozilla::ipc::IPCResult

  RecvRefreshScreens(nsTArray<ScreenDetails>&& aScreens) override;

  // Get the directory for IndexedDB files. We query the parent for this and

  // cache the value

  nsString &GetIndexedDBPath();

  ContentParentId GetID() const { return mID; }

#if defined(XP_WIN) && defined(ACCESSIBILITY)

  uint32_t GetChromeMainThreadId() const { return mMainChromeTid; }

  uint32_t GetMsaaID() const { return mMsaaID; }

#endif

  bool IsForBrowser() const { return mIsForBrowser; }

  virtual PFileDescriptorSetChild*

  SendPFileDescriptorSetConstructor(const FileDescriptor&) override;

  virtual PFileDescriptorSetChild*

  AllocPFileDescriptorSetChild(const FileDescriptor&) override;

  virtual bool

  DeallocPFileDescriptorSetChild(PFileDescriptorSetChild*) override;

  virtual bool SendPBrowserConstructor(PBrowserChild* actor,

                                       const TabId& aTabId,

                                       const TabId& aSameTabGroupAs,

                                       const IPCTabContext& context,

                                       const uint32_t& chromeFlags,

                                       const ContentParentId& aCpID,

                                       const bool& aIsForBrowser) override;

  virtual mozilla::ipc::IPCResult RecvPBrowserConstructor(PBrowserChild* aCctor,

                                                          const TabId& aTabId,

                                                          const TabId& aSameTabGroupAs,

                                                          const IPCTabContext& aContext,

                                                          const uint32_t& aChromeFlags,

                                                          const ContentParentId& aCpID,

                                                          const bool& aIsForBrowser) override;

  FORWARD_SHMEM_ALLOCATOR_TO(PContentChild)

  void GetAvailableDictionaries(InfallibleTArray<nsString>& aDictionaries);

  PBrowserOrId

  GetBrowserOrId(TabChild* aTabChild);

  virtual POfflineCacheUpdateChild*

  AllocPOfflineCacheUpdateChild(const URIParams& manifestURI,

                                const URIParams& documentURI,

                                const PrincipalInfo& aLoadingPrincipalInfo,

                                const bool& stickDocument) override;

  virtual bool

  DeallocPOfflineCacheUpdateChild(POfflineCacheUpdateChild* offlineCacheUpdate) override;

  virtual PWebrtcGlobalChild* AllocPWebrtcGlobalChild() override;

  virtual bool DeallocPWebrtcGlobalChild(PWebrtcGlobalChild *aActor) override;

  virtual PContentPermissionRequestChild*

  AllocPContentPermissionRequestChild(const InfallibleTArray<PermissionRequest>& aRequests,

                                      const IPC::Principal& aPrincipal,

                                      const bool& aIsHandlingUserInput,

                                      const TabId& aTabId) override;

  virtual bool

  DeallocPContentPermissionRequestChild(PContentPermissionRequestChild* actor) override;

  // Windows specific - set up audio session

  virtual mozilla::ipc::IPCResult

  RecvSetAudioSessionData(const nsID& aId,

                          const nsString& aDisplayName,

                          const nsString& aIconPath) override;

  // 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);

  virtual mozilla::ipc::IPCResult

  RecvGetFilesResponse(const nsID& aUUID,

                       const GetFilesResponseResult& aResult) override;

  virtual mozilla::ipc::IPCResult

  RecvBlobURLRegistration(const nsCString& aURI, const IPCBlob& aBlob,

                          const IPC::Principal& aPrincipal) override;

  virtual mozilla::ipc::IPCResult

  RecvBlobURLUnregistration(const nsCString& aURI) override;

  virtual mozilla::ipc::IPCResult

  RecvFileCreationResponse(const nsID& aUUID,

                           const FileCreationResult& aResult) override;

  mozilla::ipc::IPCResult

  RecvRequestMemoryReport(

          const uint32_t& generation,

          const bool& anonymize,

          const bool& minimizeMemoryUsage,

          const MaybeFileDesc& DMDFile) override;

  virtual mozilla::ipc::IPCResult

  RecvSetXPCOMProcessAttributes(const XPCOMInitData& aXPCOMInit,

                                const StructuredCloneData& aInitialData,

                                nsTArray<LookAndFeelInt>&& aLookAndFeelIntCache,

                                nsTArray<SystemFontListEntry>&& aFontList) override;

  virtual mozilla::ipc::IPCResult

  RecvProvideAnonymousTemporaryFile(const uint64_t& aID, const FileDescOrError& aFD) override;

  mozilla::ipc::IPCResult

  RecvSetPermissionsWithKey(const nsCString& aPermissionKey,

                            nsTArray<IPC::Permission>&& aPerms) override;

  virtual mozilla::ipc::IPCResult

  RecvShareCodeCoverageMutex(const CrossProcessMutexHandle& aHandle) override;

  virtual mozilla::ipc::IPCResult

  RecvDumpCodeCoverageCounters(DumpCodeCoverageCountersResolver&& aResolver) override;

  virtual mozilla::ipc::IPCResult

  RecvResetCodeCoverageCounters(ResetCodeCoverageCountersResolver&& aResolver) override;

  virtual mozilla::ipc::IPCResult

  RecvSetInputEventQueueEnabled() override;

  virtual mozilla::ipc::IPCResult

  RecvFlushInputEventQueue() override;

  virtual mozilla::ipc::IPCResult

  RecvSuspendInputEventQueue() override;

  virtual mozilla::ipc::IPCResult

  RecvResumeInputEventQueue() override;

  virtual mozilla::ipc::IPCResult

  RecvAddDynamicScalars(nsTArray<DynamicScalarDefinition>&& aDefs) override;

#if defined(XP_WIN) && defined(ACCESSIBILITY)

  bool

  SendGetA11yContentId();

#endif // defined(XP_WIN) && defined(ACCESSIBILITY)

  // Get a reference to the font list passed from the chrome process,

  // for use during gfx initialization.

  InfallibleTArray<mozilla::dom::SystemFontListEntry>&

  SystemFontList() {

    return mFontList;

  }

  // PURLClassifierChild

  virtual PURLClassifierChild*

  AllocPURLClassifierChild(const Principal& aPrincipal,

                           const bool& aUseTrackingProtection,

                           bool* aSuccess) override;

  virtual bool

  DeallocPURLClassifierChild(PURLClassifierChild* aActor) override;

  // PURLClassifierLocalChild

  virtual PURLClassifierLocalChild*

  AllocPURLClassifierLocalChild(const URIParams& aUri,

                                const nsCString& aTables) override;

  virtual bool

  DeallocPURLClassifierLocalChild(PURLClassifierLocalChild* aActor) override;

  virtual PLoginReputationChild*

  AllocPLoginReputationChild(const URIParams& aUri) override;

  virtual bool

  DeallocPLoginReputationChild(PLoginReputationChild* aActor) override;

  nsTArray<LookAndFeelInt>&

  LookAndFeelCache() {

    return mLookAndFeelCache;

  }

  /**

   * 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);

  // This method is used by FileCreatorHelper for the creation of a BlobImpl.

  void

  FileCreationRequest(nsID& aUUID, FileCreatorHelper* aHelper,

                      const nsAString& aFullPath, const nsAString& aType,

                      const nsAString& aName,

                      const Optional<int64_t>& aLastModified,

                      bool aExistenceCheck, bool aIsFromNsIFile);

  typedef std::function<void(PRFileDesc*)> AnonymousTemporaryFileCallback;

  nsresult AsyncOpenAnonymousTemporaryFile(const AnonymousTemporaryFileCallback& aCallback);

  virtual already_AddRefed<nsIEventTarget> GetEventTargetFor(TabChild* aTabChild) override;

  mozilla::ipc::IPCResult

  RecvSetPluginList(const uint32_t& aPluginEpoch,

                    nsTArray<PluginTag>&& aPluginTags,

                    nsTArray<FakePluginTag>&& aFakePluginTags) override;

  virtual PClientOpenWindowOpChild*

  AllocPClientOpenWindowOpChild(const ClientOpenWindowArgs& aArgs) override;

  virtual mozilla::ipc::IPCResult

  RecvPClientOpenWindowOpConstructor(PClientOpenWindowOpChild* aActor,

                                     const ClientOpenWindowArgs& aArgs) override;

  virtual bool

  DeallocPClientOpenWindowOpChild(PClientOpenWindowOpChild* aActor) override;

  mozilla::ipc::IPCResult

  RecvSaveRecording(const FileDescriptor& aFile) override;

#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

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;

  virtual already_AddRefed<nsIEventTarget>

  GetConstructedEventTarget(const Message& aMsg) override;

  virtual already_AddRefed<nsIEventTarget>

  GetSpecificMessageEventTarget(const Message& aMsg) override;

#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, Message*& aReply) override;

#endif

  InfallibleTArray<nsAutoPtr<AlertObserver> > mAlertObservers;

  RefPtr<ConsoleListener> mConsoleListener;

  nsTHashtable<nsPtrHashKey<nsIObserver>> mIdleObservers;

  InfallibleTArray<nsString> 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.

  InfallibleTArray<mozilla::dom::SystemFontListEntry> mFontList;

  // Temporary storage for nsXPLookAndFeel flags.

  nsTArray<LookAndFeelInt> mLookAndFeelCache;

  /**

   * 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;

#if defined(XP_WIN) && defined(ACCESSIBILITY)

  /**

   * The thread ID of the main thread in the chrome process.

   */

  uint32_t mMainChromeTid;

  /**

   * This is an a11y-specific unique id for the content process that is

   * generated by the chrome process.

   */

  uint32_t mMsaaID;

#endif

  AppInfo mAppInfo;

  bool mIsForBrowser;

  nsString mRemoteType = VoidString();

  bool mIsAlive;

  nsString mProcessName;

  static ContentChild* sSingleton;

  class ShutdownCanary;

  static StaticAutoPtr<ShutdownCanary> sShutdownCanary;

  nsCOMPtr<nsIDomainPolicy> mPolicy;

  nsCOMPtr<nsITimer> mForceKillTimer;

  RefPtr<ipc::SharedMap> mSharedData;

#ifdef MOZ_GECKO_PROFILER

  RefPtr<ChildProfilerController> mProfilerController;

#endif

#if defined(XP_MACOSX) && defined(MOZ_CONTENT_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;

  // Hashtable to keep track of the pending file creation.

  // These items are removed when RecvFileCreationResponse is received.

  nsRefPtrHashtable<nsIDHashKey, FileCreatorHelper> mFileCreationPending;

  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

  DISALLOW_EVIL_CONSTRUCTORS(ContentChild);

};

uint64_t

NextWindowID();

} // namespace dom

} // namespace mozilla

#endif // mozilla_dom_ContentChild_h