[RemotePlayback] Implement 'connecting' state

media/blink/renderer_media_player_interface.h

 // Copyright 2016 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 MEDIA_BLINK_RENDERER_MEDIA_PLAYER_INTERFACE_H_
 #define MEDIA_BLINK_RENDERER_MEDIA_PLAYER_INTERFACE_H_
 
 // This file contains interfaces modeled after classes in
 // content/renderer/media/android for the purposes of letting clases in
 // this directory implement and/or interact with those classes.
@@ skipping 31 matching lines @@
   // Called to update the current time.
   virtual void OnTimeUpdate(base::TimeDelta current_timestamp,
                             base::TimeTicks current_time_ticks) = 0;
 
   virtual void OnPlayerReleased() = 0;
 
   // Functions called when media player status changes.
   virtual void OnConnectedToRemoteDevice(
       const std::string& remote_playback_message) = 0;
   virtual void OnDisconnectedFromRemoteDevice() = 0;
+  virtual void OnRemotePlaybackStarted() = 0;
   virtual void OnCancelledRemotePlaybackRequest() = 0;
   virtual void OnDidExitFullscreen() = 0;
   virtual void OnMediaPlayerPlay() = 0;
   virtual void OnMediaPlayerPause() = 0;
   virtual void OnRemoteRouteAvailabilityChanged(bool routes_available) = 0;
 
   // Getters of playback state.
   virtual bool paused() const = 0;
 
   // True if the loaded media has a playable video track.
@@ skipping 51 matching lines @@
   virtual void RequestRemotePlaybackStop(int player_id) = 0;
 
   // Registers and unregisters a RendererMediaPlayerInterface object.
   virtual int RegisterMediaPlayer(RendererMediaPlayerInterface* player) = 0;
   virtual void UnregisterMediaPlayer(int player_id) = 0;
 };
 
 }  // namespace media
 
 #endif  // MEDIA_BLINK_RENDERER_MEDIA_PLAYER_INTERFACE_H_