Media Remoting: Add RemotingController.

media/blink/webmediaplayer_impl.h

Index: media/blink/webmediaplayer_impl.h
diff --git a/media/blink/webmediaplayer_impl.h b/media/blink/webmediaplayer_impl.h
index 16f3bbdbec91f6973d68da6e9dcb52e15f4c662f..c3965bf134c05870bbcc9ad5201de95dba8c1fa0 100644
--- a/media/blink/webmediaplayer_impl.h
+++ b/media/blink/webmediaplayer_impl.h
@@ -21,6 +21,7 @@
 #include "base/timer/elapsed_timer.h"
 #include "base/timer/timer.h"
 #include "build/build_config.h"
+#include "media/base/media_observer.h"
 #include "media/base/media_tracks.h"
 #include "media/base/pipeline_impl.h"
 #include "media/base/renderer_factory.h"
@@ -181,6 +182,10 @@ class MEDIA_BLINK_EXPORT WebMediaPlayerImpl
   void enteredFullscreen() override;
   void exitedFullscreen() override;
 
+  // These are called when any ancestor enters/exits full screen.
+  void ancestorEnteredFullscreen() override;
+  void ancestorExitedFullscreen() override;
+
   // WebMediaPlayerDelegate::Observer implementation.
   void OnHidden() override;
   void OnShown() override;
@@ -210,6 +215,11 @@ class MEDIA_BLINK_EXPORT WebMediaPlayerImpl
   // TODO(hubbe): WMPI_CAST make private.
   void OnPipelineSeeked(bool time_updated);
 
+  // Restart the player/pipeline as soon as possible. This will destroy the
+  // current renderer, if any, and create a new one via the RendererFactory; and
+  // then seek to resume playback at the current position.
+  void ScheduleRestart();
+
   // Distinct states that |delegate_| can be in.
   // TODO(sandersd): This should move into WebMediaPlayerDelegate.
   // (Public for testing.)
@@ -253,9 +263,6 @@ class MEDIA_BLINK_EXPORT WebMediaPlayerImpl
   // |time_updated| is false.
   void DoSeek(base::TimeDelta time, bool time_updated);
 
-  // Ask for the renderer to be restarted (destructed and recreated).
-  void ScheduleRestart();
-
   // Called after |defer_load_cb_| has decided to allow the load. If
   // |defer_load_cb_| is null this is called immediately.
   void DoLoad(LoadType load_type,
@@ -548,6 +555,9 @@ class MEDIA_BLINK_EXPORT WebMediaPlayerImpl
   int underflow_count_;
   std::unique_ptr<base::ElapsedTimer> underflow_timer_;
 
+  // Monitors the player events.
+  base::WeakPtr<MediaObserver> observer_;
+
   DISALLOW_COPY_AND_ASSIGN(WebMediaPlayerImpl);
 };