Revert of Adding new media controls to MediaNotification

content/browser/media/session/media_session_impl.h

Index: content/browser/media/session/media_session_impl.h
diff --git a/content/browser/media/session/media_session_impl.h b/content/browser/media/session/media_session_impl.h
index 4e07dad8d06f22ba0f6b45f03c7fbda3b2a6093f..2a6d027f5e4222e12b06e93ea826f6b3d858600f 100644
--- a/content/browser/media/session/media_session_impl.h
+++ b/content/browser/media/session/media_session_impl.h
@@ -39,7 +39,6 @@
 class MediaSessionImplVisibilityBrowserTest;
 class MediaSessionObserver;
 class MediaSessionPlayerObserver;
-class MediaSessionServiceImpl;
 
 #if defined(OS_ANDROID)
 class MediaSessionAndroid;
@@ -124,17 +123,6 @@
   // |type| represents the origin of the request.
   CONTENT_EXPORT void Stop(MediaSession::SuspendType suspend_type) override;
 
-  // Received a media session action and forward to blink::MediaSession.
-  void DidReceiveAction(blink::mojom::MediaSessionAction action) override;
-
-  // Called when an action is enabled in blink::MediaSession. This method will
-  // notify the observers that the action is enabled.
-  void OnMediaSessionEnabledAction(blink::mojom::MediaSessionAction action);
-
-  // Called when an action is disabled in blink::MediaSession. This method will
-  // notify the observers that the action is disabled.
-  void OnMediaSessionDisabledAction(blink::mojom::MediaSessionAction action);
-
   // Let the media session start ducking such that the volume multiplier is
   // reduced.
   CONTENT_EXPORT void StartDucking();
@@ -172,11 +160,6 @@
   // WebContentsObserver implementation
   void WebContentsDestroyed() override;
 
-  // Sets the associated MediaSessionService for communicating with
-  // blink::MediaSession.
-  MediaSessionServiceImpl* GetMediaSessionService() { return service_; }
-  void SetMediaSessionService(MediaSessionServiceImpl* service);
-
  private:
   friend class content::WebContentsUserData<MediaSessionImpl>;
   friend class ::MediaSessionImplBrowserTest;
@@ -272,10 +255,6 @@
   std::unique_ptr<MediaSessionAndroid> session_android_;
 #endif  // defined(OS_ANDROID)
 
-  // The MediaSessionService this session is associated with (the service of the
-  // top-level frame).
-  MediaSessionServiceImpl* service_;
-
   DISALLOW_COPY_AND_ASSIGN(MediaSessionImpl);
 };