[RemotePlayback] Implement 'connecting' state

content/renderer/media/android/renderer_media_player_manager.h

Index: content/renderer/media/android/renderer_media_player_manager.h
diff --git a/content/renderer/media/android/renderer_media_player_manager.h b/content/renderer/media/android/renderer_media_player_manager.h
index 608a55e917c150c1603f812581cb6dc319dd53c8..e55659e94cfba4ba1e94425a6e9e59b9821ce96a 100644
--- a/content/renderer/media/android/renderer_media_player_manager.h
+++ b/content/renderer/media/android/renderer_media_player_manager.h
@@ -116,6 +116,7 @@ class RendererMediaPlayerManager :
       const std::string& remote_playback_message);
   void OnDisconnectedFromRemoteDevice(int player_id);
   void OnCancelledRemotePlaybackRequest(int player_id);
+  void OnRemotePlaybackStarted(int player_id);
   void OnDidExitFullscreen(int player_id);
   void OnDidEnterFullscreen(int player_id);
   void OnPlayerPlay(int player_id);