Refactor media permission dispatcher class and create proxy class for non-UI threads.

content/renderer/render_frame_impl.h

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CONTENT_RENDERER_RENDER_FRAME_IMPL_H_
 #define CONTENT_RENDERER_RENDER_FRAME_IMPL_H_
 
 #include <vector>
 
 #include "base/basictypes.h"
@@ skipping 81 matching lines @@
 
 class ChildFrameCompositingHelper;
 class CompositorDependencies;
 class DevToolsAgent;
 class DocumentState;
 class ExternalPopupMenu;
 class GeolocationDispatcher;
 class ManifestManager;
 class MediaStreamDispatcher;
 class MediaStreamRendererFactory;
-class MediaPermissionDispatcher;
+class MediaPermissionDispatcherImpl;
 class MidiDispatcher;
 class NavigationState;
 class NotificationPermissionDispatcher;
 class PageState;
 class PepperPluginInstanceImpl;
 class PermissionDispatcher;
 class PresentationDispatcher;
 class PushMessagingDispatcher;
 class RendererAccessibility;
 class RendererCdmManager;
@@ skipping 464 matching lines @@
       mojo::InterfaceRequest<mojo::ServiceProvider> services,
       mojo::ServiceProviderPtr exposed_services);
 
   ManifestManager* manifest_manager();
 
   // TODO(creis): Remove when the only caller, the HistoryController, is no
   // more.
   void SetPendingNavigationParams(
       scoped_ptr<NavigationParams> navigation_params);
 
+  // Expose MediaPermission to the non-UI threads. Any calls to this will be
+  // redirected to |media_permission_dispatcher_| on UI thread and have the
+  // callback called on |caller_task_runner|.
+  scoped_ptr<media::MediaPermission> CreateMediaPermissionProxy(
+      scoped_refptr<base::SingleThreadTaskRunner> caller_task_runner);
+
  protected:
   explicit RenderFrameImpl(const CreateParams& params);
 
  private:
   friend class RenderFrameImplTest;
   friend class RenderFrameObserver;
   friend class RendererAccessibilityTest;
   friend class TestRenderFrame;
   FRIEND_TEST_ALL_PREFIXES(ExternalPopupMenuDisplayNoneTest, SelectItem);
   FRIEND_TEST_ALL_PREFIXES(ExternalPopupMenuRemoveTest, RemoveOnChange);
@@ skipping 350 matching lines @@
   // Dispatches permission requests for Web Notifications.
   NotificationPermissionDispatcher* notification_permission_dispatcher_;
 
   // Destroyed via the RenderFrameObserver::OnDestruct() mechanism.
   UserMediaClientImpl* web_user_media_client_;
 
   // EncryptedMediaClient attached to this frame; lazily initialized.
   scoped_ptr<media::WebEncryptedMediaClientImpl> web_encrypted_media_client_;
 
   // The media permission dispatcher attached to this frame, lazily initialized.
-  MediaPermissionDispatcher* media_permission_dispatcher_;
+  MediaPermissionDispatcherImpl* media_permission_dispatcher_;
 
 #if defined(ENABLE_MOJO_MEDIA)
   // The media factory attached to this frame, lazily initialized.
   media::interfaces::ServiceFactoryPtr media_service_factory_;
 #endif
 
   // MidiClient attached to this frame; lazily initialized.
   MidiDispatcher* midi_dispatcher_;
 
 #if defined(OS_ANDROID)
@@ skipping 75 matching lines @@
 #endif
 
   base::WeakPtrFactory<RenderFrameImpl> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderFrameImpl);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_RENDER_FRAME_IMPL_H_