[RemotePlayback] Implement 'connecting' state

chrome/browser/media/android/remote/remote_media_player_bridge.cc

Index: chrome/browser/media/android/remote/remote_media_player_bridge.cc
diff --git a/chrome/browser/media/android/remote/remote_media_player_bridge.cc b/chrome/browser/media/android/remote/remote_media_player_bridge.cc
index 62f6d07bcd326500ec5359017de0be9bebe1028f..638b92d8e5d35c0a204032608aff9a83ec9791a2 100644
--- a/chrome/browser/media/android/remote/remote_media_player_bridge.cc
+++ b/chrome/browser/media/android/remote/remote_media_player_bridge.cc
@@ -180,6 +180,14 @@ void RemoteMediaPlayerBridge::OnCastStarting(
   }
 }
 
+void RemoteMediaPlayerBridge::OnCastStarted(
+    JNIEnv* env,
+    const JavaParamRef<jobject>& obj) {
+  DCHECK_CURRENTLY_ON(BrowserThread::UI);
+  static_cast<RemoteMediaPlayerManager*>(manager())->OnRemotePlaybackStarted(
+      player_id());
+}
+
 void RemoteMediaPlayerBridge::OnCastStopping(JNIEnv* env,
                                              const JavaParamRef<jobject>& obj) {
   static_cast<RemoteMediaPlayerManager*>(manager())