Media Remoting: Add RemotingController.

content/renderer/render_frame_impl.h

Index: content/renderer/render_frame_impl.h
diff --git a/content/renderer/render_frame_impl.h b/content/renderer/render_frame_impl.h
index b5904b226ef97ff5fef68b2a10a4ea16a8f1bea8..a39ffc46d7a2c81b2cd02fd99906c939923378dd 100644
--- a/content/renderer/render_frame_impl.h
+++ b/content/renderer/render_frame_impl.h
@@ -105,6 +105,7 @@ class CdmFactory;
 class DecoderFactory;
 class MediaPermission;
 class MediaServiceProvider;
+class RemotingController;
 class RendererWebMediaPlayerDelegate;
 class SurfaceManager;
 class UrlIndex;
@@ -1020,7 +1021,10 @@ class CONTENT_EXPORT RenderFrameImpl
   shell::mojom::InterfaceProvider* GetMediaInterfaceProvider();
 #endif
 
+#if BUILDFLAG(ENABLE_MEDIA_REMOTING)
   media::mojom::RemoterFactory* GetRemoterFactory();
+#endif
+
   media::CdmFactory* GetCdmFactory();
   media::DecoderFactory* GetDecoderFactory();
 
@@ -1048,6 +1052,12 @@ class CONTENT_EXPORT RenderFrameImpl
 
   void InitializeBlameContext(RenderFrameImpl* parent_frame);
 
+#if BUILDFLAG(ENABLE_MEDIA_REMOTING)
+  // Creates the RemotingController to control whether to switch to/from media
+  // remoting from/to local playback.
+  std::unique_ptr<media::RemotingController> CreateRemotingController();
+#endif
+
   // Stores the WebLocalFrame we are associated with.  This is null from the
   // constructor until BindToWebFrame is called, and it is null after
   // frameDetached is called until destruction (which is asynchronous in the
@@ -1186,9 +1196,11 @@ class CONTENT_EXPORT RenderFrameImpl
 
   media::SurfaceManager* media_surface_manager_;
 
+#if BUILDFLAG(ENABLE_MEDIA_REMOTING)
   // Lazy-bound pointer to the RemoterFactory service in the browser
   // process. Always use the GetRemoterFactory() accessor instead of this.
   media::mojom::RemoterFactoryPtr remoter_factory_;
+#endif
 
   // The CDM and decoder factory attached to this frame, lazily initialized.
   std::unique_ptr<media::CdmFactory> cdm_factory_;