[Android cast] Make the local player exit seeking mode on cast start

content/renderer/media/android/webmediaplayer_android.cc

 // Copyright 2013 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.
 
 #include "content/renderer/media/android/webmediaplayer_android.h"
 
 #include <stddef.h>
 
 #include <limits>
 
@@ skipping 1008 matching lines @@
   // paused while fullscreen then fullscreen state was left.
   TryCreateStreamTextureProxyIfNeeded();
   if (needs_establish_peer_)
     EstablishSurfaceTexturePeer();
 
   UpdatePlayingState(true);
   client_->playbackStateChanged();
 }
 
 void WebMediaPlayerAndroid::OnMediaPlayerPause() {
+  // Complete a seek operation upon entering pause state. Pause is called as
+  // part of remote media player preparation. There might be a seek operation
+  // initiated locally while the media is not playing, and it needs to be
+  // completed before the remote player starts playing.
+  // (see crbug.com/568161)
+  if (seeking())
+    OnSeekComplete(seek_time_);

[aberent, 2016/01/12 15:54:56]

What effect does this have on local playback, e.g. if the user presses pause
while there is a real seek in progress? What happens when the real seek
completes and calls OnSeekComplete (or does something prevent it from doing so)?

[dgn, 2016/01/13 12:25:54]

Removed that line. Tried first to do that when switching to the remote player,
then removed it entirely to react on mediastatelistener, which come as response
to the seek request calls.

+
   UpdatePlayingState(false);
   client_->playbackStateChanged();
 }
 
 void WebMediaPlayerAndroid::OnRemoteRouteAvailabilityChanged(
     bool routes_available) {
   client_->remoteRouteAvailabilityChanged(routes_available);
 }
 
 void WebMediaPlayerAndroid::OnDurationChanged(const base::TimeDelta& duration) {
@@ skipping 914 matching lines @@
     result = PREDICTION_RESULT_PATH_BASED_WAS_BETTER;
   } else if (is_hls_url == is_hls) {
     result = PREDICTION_RESULT_URL_BASED_WAS_BETTER;
   }
   UMA_HISTOGRAM_ENUMERATION(
       "Media.Android.IsHttpLiveStreamingMediaPredictionResult",
       result, PREDICTION_RESULT_MAX);
 }
 
 }  // namespace content