Delete browser MSE implementation.

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 4b2988ebeb2269ac2093cc7519355d1fb7bdc599..2b6b74cc018e1a009fd949e0de84779e56d90370 100644
--- a/content/renderer/media/android/renderer_media_player_manager.h
+++ b/content/renderer/media/android/renderer_media_player_manager.h
@@ -46,7 +46,6 @@ class RendererMediaPlayerManager :
                   int player_id,
                   const GURL& url,
                   const GURL& first_party_for_cookies,
-                  int demuxer_client_id,
                   const GURL& frame_url,
                   bool allow_credentials,
                   int delegate_id) override;
@@ -117,7 +116,6 @@ class RendererMediaPlayerManager :
   void OnTimeUpdate(int player_id,
                     base::TimeDelta current_timestamp,
                     base::TimeTicks current_time_ticks);
-  void OnWaitingForDecryptionKey(int player_id);
   void OnMediaPlayerReleased(int player_id);
   void OnConnectedToRemoteDevice(int player_id,
       const std::string& remote_playback_message);