[RemotePlayback] Implement 'connecting' state

content/renderer/media/android/webmediaplayer_android.cc

Index: content/renderer/media/android/webmediaplayer_android.cc
diff --git a/content/renderer/media/android/webmediaplayer_android.cc b/content/renderer/media/android/webmediaplayer_android.cc
index a9af9028b63ee71088dcbf587b8c35f1927ae3c9..10a40de5035e5911c4d7315445d288edd5a344c7 100644
--- a/content/renderer/media/android/webmediaplayer_android.cc
+++ b/content/renderer/media/android/webmediaplayer_android.cc
@@ -880,6 +880,11 @@ void WebMediaPlayerAndroid::OnCancelledRemotePlaybackRequest() {
   client_->cancelledRemotePlaybackRequest();
 }
 
+void WebMediaPlayerAndroid::OnRemotePlaybackStarted() {
+  DCHECK(main_thread_checker_.CalledOnValidThread());
+  client_->remotePlaybackStarted();
+}
+
 void WebMediaPlayerAndroid::OnDidExitFullscreen() {
   SetNeedsEstablishPeer(true);
   // We had the fullscreen surface connected to Android MediaPlayer,