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diff --git a/dom/base/Navigator.h b/dom/base/Navigator.h
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+/* -*- 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_Navigator_h
+#define mozilla_dom_Navigator_h
+
+#include "mozilla/MemoryReporting.h"
+#include "mozilla/dom/AddonManagerBinding.h"
+#include "mozilla/dom/BindingDeclarations.h"
+#include "mozilla/dom/Fetch.h"
+#include "mozilla/dom/Nullable.h"
+#include "nsWrapperCache.h"
+#include "nsHashKeys.h"
+#include "nsInterfaceHashtable.h"
+#include "nsString.h"
+#include "nsTArray.h"
+#include "mozilla/dom/MediaKeySystemAccessManager.h"
+
+class nsPluginArray;
+class nsMimeTypeArray;
+class nsPIDOMWindowInner;
+class nsIDOMNavigatorSystemMessages;
+class nsIPrincipal;
+class nsIURI;
+
+namespace mozilla {
+class ErrorResult;
+
+namespace dom {
+class AddonManager;
+class BodyExtractorBase;
+class Geolocation;
+class systemMessageCallback;
+class MediaDevices;
+struct MediaStreamConstraints;
+class WakeLock;
+class ArrayBufferOrArrayBufferViewOrBlobOrFormDataOrUSVStringOrURLSearchParams;
+class ServiceWorkerContainer;
+class DOMRequest;
+class CredentialsContainer;
+class Clipboard;
+}  // namespace dom
+namespace webgpu {
+class Instance;
+}  // namespace webgpu
+}  // namespace mozilla
+
+//*****************************************************************************
+// Navigator: Script "navigator" object
+//*****************************************************************************
+
+namespace mozilla {
+namespace dom {
+
+class Permissions;
+
+namespace battery {
+class BatteryManager;
+}  // namespace battery
+
+class Promise;
+
+class Gamepad;
+class GamepadServiceTest;
+class NavigatorUserMediaSuccessCallback;
+class NavigatorUserMediaErrorCallback;
+class MozGetUserMediaDevicesSuccessCallback;
+
+struct MIDIOptions;
+
+namespace network {
+class Connection;
+}  // namespace network
+
+class Presentation;
+class LegacyMozTCPSocket;
+class VRDisplay;
+class VRServiceTest;
+class XRSystem;
+class StorageManager;
+class MediaCapabilities;
+class MediaSession;
+struct ShareData;
+class WindowGlobalChild;
+
+class Navigator final : public nsISupports, public nsWrapperCache {
+ public:
+  explicit Navigator(nsPIDOMWindowInner* aInnerWindow);
+
+  NS_DECL_CYCLE_COLLECTING_ISUPPORTS
+  NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_CLASS(Navigator)
+
+  void Invalidate();
+  nsPIDOMWindowInner* GetWindow() const { return mWindow; }
+
+  void RefreshMIMEArray();
+
+  size_t SizeOfIncludingThis(mozilla::MallocSizeOf aMallocSizeOf) const;
+
+  /**
+   * For use during document.write where our inner window changes.
+   */
+  void SetWindow(nsPIDOMWindowInner* aInnerWindow);
+
+  /**
+   * Called when the inner window navigates to a new page.
+   */
+  void OnNavigation();
+
+  void GetProduct(nsAString& aProduct);
+  void GetLanguage(nsAString& aLanguage);
+  void GetAppName(nsAString& aAppName, CallerType aCallerType) const;
+  void GetAppVersion(nsAString& aAppName, CallerType aCallerType,
+                     ErrorResult& aRv) const;
+  void GetPlatform(nsAString& aPlatform, CallerType aCallerType,
+                   ErrorResult& aRv) const;
+  void GetUserAgent(nsAString& aUserAgent, CallerType aCallerType,
+                    ErrorResult& aRv) const;
+  bool OnLine();
+  void CheckProtocolHandlerAllowed(const nsAString& aScheme,
+                                   nsIURI* aHandlerURI, nsIURI* aDocumentURI,
+                                   ErrorResult& aRv);
+  void RegisterProtocolHandler(const nsAString& aScheme, const nsAString& aURL,
+                               ErrorResult& aRv);
+  nsMimeTypeArray* GetMimeTypes(ErrorResult& aRv);
+  nsPluginArray* GetPlugins(ErrorResult& aRv);
+  Permissions* GetPermissions(ErrorResult& aRv);
+  void GetDoNotTrack(nsAString& aResult);
+  Geolocation* GetGeolocation(ErrorResult& aRv);
+  Promise* GetBattery(ErrorResult& aRv);
+
+  Promise* Share(const ShareData& aData, ErrorResult& aRv);
+
+  static void AppName(nsAString& aAppName, nsIPrincipal* aCallerPrincipal,
+                      bool aUsePrefOverriddenValue);
+
+  static nsresult GetPlatform(nsAString& aPlatform,
+                              nsIPrincipal* aCallerPrincipal,
+                              bool aUsePrefOverriddenValue);
+
+  static nsresult GetAppVersion(nsAString& aAppVersion,
+                                nsIPrincipal* aCallerPrincipal,
+                                bool aUsePrefOverriddenValue);
+
+  static nsresult GetUserAgent(nsPIDOMWindowInner* aWindow,
+                               nsIPrincipal* aCallerPrincipal,
+                               bool aIsCallerChrome, nsAString& aUserAgent);
+
+  // Clears the platform cache by calling:
+  // Navigator_Binding::ClearCachedPlatformValue(this);
+  void ClearPlatformCache();
+
+  // Clears the user agent cache by calling:
+  // Navigator_Binding::ClearCachedUserAgentValue(this);
+  void ClearUserAgentCache();
+
+  bool Vibrate(uint32_t aDuration);
+  bool Vibrate(const nsTArray<uint32_t>& aDuration);
+  void SetVibrationPermission(bool aPermitted, bool aPersistent);
+  uint32_t MaxTouchPoints(CallerType aCallerType);
+  void GetAppCodeName(nsAString& aAppCodeName, ErrorResult& aRv);
+  void GetOscpu(nsAString& aOscpu, CallerType aCallerType,
+                ErrorResult& aRv) const;
+  void GetVendorSub(nsAString& aVendorSub);
+  void GetVendor(nsAString& aVendor);
+  void GetProductSub(nsAString& aProductSub);
+  bool CookieEnabled();
+  void GetBuildID(nsAString& aBuildID, CallerType aCallerType,
+                  ErrorResult& aRv) const;
+  bool JavaEnabled() { return false; }
+  uint64_t HardwareConcurrency();
+  bool TaintEnabled() { return false; }
+
+  already_AddRefed<LegacyMozTCPSocket> MozTCPSocket();
+  network::Connection* GetConnection(ErrorResult& aRv);
+  MediaDevices* GetMediaDevices(ErrorResult& aRv);
+
+  void GetGamepads(nsTArray<RefPtr<Gamepad>>& aGamepads, ErrorResult& aRv);
+  GamepadServiceTest* RequestGamepadServiceTest();
+  already_AddRefed<Promise> GetVRDisplays(ErrorResult& aRv);
+  void FinishGetVRDisplays(bool isWebVRSupportedInwindow, Promise* p);
+  void GetActiveVRDisplays(nsTArray<RefPtr<VRDisplay>>& aDisplays) const;
+  void OnXRPermissionRequestAllow();
+  void OnXRPermissionRequestCancel();
+  VRServiceTest* RequestVRServiceTest();
+  bool IsWebVRContentDetected() const;
+  bool IsWebVRContentPresenting() const;
+  void RequestVRPresentation(VRDisplay& aDisplay);
+  XRSystem* GetXr(ErrorResult& aRv);
+  already_AddRefed<Promise> RequestMIDIAccess(const MIDIOptions& aOptions,
+                                              ErrorResult& aRv);
+
+  Presentation* GetPresentation(ErrorResult& aRv);
+
+  bool SendBeacon(const nsAString& aUrl, const Nullable<fetch::BodyInit>& aData,
+                  ErrorResult& aRv);
+
+  void MozGetUserMedia(const MediaStreamConstraints& aConstraints,
+                       NavigatorUserMediaSuccessCallback& aOnSuccess,
+                       NavigatorUserMediaErrorCallback& aOnError,
+                       CallerType aCallerType, ErrorResult& aRv);
+  MOZ_CAN_RUN_SCRIPT
+  void MozGetUserMediaDevices(const MediaStreamConstraints& aConstraints,
+                              MozGetUserMediaDevicesSuccessCallback& aOnSuccess,
+                              NavigatorUserMediaErrorCallback& aOnError,
+                              uint64_t aInnerWindowID, const nsAString& aCallID,
+                              ErrorResult& aRv);
+
+  already_AddRefed<ServiceWorkerContainer> ServiceWorker();
+
+  mozilla::dom::CredentialsContainer* Credentials();
+  dom::Clipboard* Clipboard();
+  webgpu::Instance* Gpu();
+
+  static bool Webdriver();
+
+  void GetLanguages(nsTArray<nsString>& aLanguages);
+
+  StorageManager* Storage();
+
+  static void GetAcceptLanguages(nsTArray<nsString>& aLanguages);
+
+  dom::MediaCapabilities* MediaCapabilities();
+  dom::MediaSession* MediaSession();
+
+  AddonManager* GetMozAddonManager(ErrorResult& aRv);
+
+  // WebIDL helper methods
+  static bool HasUserMediaSupport(JSContext* /* unused */,
+                                  JSObject* /* unused */);
+  static bool HasShareSupport(JSContext* /* unused */, JSObject* /* unused */);
+
+  nsPIDOMWindowInner* GetParentObject() const { return GetWindow(); }
+
+  virtual JSObject* WrapObject(JSContext* cx,
+                               JS::Handle<JSObject*> aGivenProto) override;
+
+  // GetWindowFromGlobal returns the inner window for this global, if
+  // any, else null.
+  static already_AddRefed<nsPIDOMWindowInner> GetWindowFromGlobal(
+      JSObject* aGlobal);
+
+  already_AddRefed<Promise> RequestMediaKeySystemAccess(
+      const nsAString& aKeySystem,
+      const Sequence<MediaKeySystemConfiguration>& aConfig, ErrorResult& aRv);
+
+  bool HasCreatedMediaSession() const;
+
+ private:
+  RefPtr<MediaKeySystemAccessManager> mMediaKeySystemAccessManager;
+
+ public:
+  void NotifyVRDisplaysUpdated();
+  void NotifyActiveVRDisplaysChanged();
+
+ private:
+  virtual ~Navigator();
+
+  // This enum helps SendBeaconInternal to apply different behaviors to body
+  // types.
+  enum BeaconType { eBeaconTypeBlob, eBeaconTypeArrayBuffer, eBeaconTypeOther };
+
+  bool SendBeaconInternal(const nsAString& aUrl, BodyExtractorBase* aBody,
+                          BeaconType aType, ErrorResult& aRv);
+
+  nsIDocShell* GetDocShell() const {
+    return mWindow ? mWindow->GetDocShell() : nullptr;
+  }
+
+  RefPtr<nsMimeTypeArray> mMimeTypes;
+  RefPtr<nsPluginArray> mPlugins;
+  RefPtr<Permissions> mPermissions;
+  RefPtr<Geolocation> mGeolocation;
+  RefPtr<battery::BatteryManager> mBatteryManager;
+  RefPtr<Promise> mBatteryPromise;
+  RefPtr<network::Connection> mConnection;
+  RefPtr<CredentialsContainer> mCredentials;
+  RefPtr<dom::Clipboard> mClipboard;
+  RefPtr<MediaDevices> mMediaDevices;
+  RefPtr<ServiceWorkerContainer> mServiceWorkerContainer;
+  nsCOMPtr<nsPIDOMWindowInner> mWindow;
+  RefPtr<Presentation> mPresentation;
+  RefPtr<GamepadServiceTest> mGamepadServiceTest;
+  nsTArray<RefPtr<Promise>> mVRGetDisplaysPromises;
+  RefPtr<VRServiceTest> mVRServiceTest;
+  RefPtr<XRSystem> mXRSystem;
+  nsTArray<uint32_t> mRequestedVibrationPattern;
+  RefPtr<StorageManager> mStorageManager;
+  RefPtr<dom::MediaCapabilities> mMediaCapabilities;
+  RefPtr<dom::MediaSession> mMediaSession;
+  RefPtr<AddonManager> mAddonManager;
+  RefPtr<webgpu::Instance> mWebGpu;
+  RefPtr<Promise> mSharePromise;  // Web Share API related
+  // Gamepad moving to secure contexts
+  bool mGamepadSecureContextWarningShown = false;
+};
+
+}  // namespace dom
+}  // namespace mozilla
+
+#endif  // mozilla_dom_Navigator_h