Don't mark a WebMediaPlayer as idle until it has size and first frame.

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 950 matching lines @@
     stream_texture_factory_->SetStreamTextureSize(
         stream_id_, gfx::Size(natural_size_.width, natural_size_.height));
     cached_stream_texture_size_ = natural_size_;
   }
 
   // Lazily allocate compositing layer.
   if (!video_weblayer_) {
     video_weblayer_.reset(new cc_blink::WebLayerImpl(
         cc::VideoLayer::Create(this, media::VIDEO_ROTATION_0)));
     client_->setWebLayer(video_weblayer_.get());
+
+    // If we're paused after we receive metadata for the first time, tell the

[wolenetz, 2016/03/15 01:08:24]

For MSE midstream configchange that changes the width or height, would this new
code start a 15-second timer on the delegate that might not get canceled across
the continually, actually still playing, configchange?

[wolenetz, 2016/03/15 01:11:18]

Dale pointed out this block happens only once (if !video_weblayer_).
So no problem here.

+    // delegate we can now be safely suspended due to inactivity if a subsequent
+    // play event does not occur.
+    if (paused() && delegate_)
+      delegate_->DidPause(delegate_id_, false);
   }
 }
 
 void WebMediaPlayerAndroid::OnTimeUpdate(base::TimeDelta current_timestamp,
                                          base::TimeTicks current_time_ticks) {
   DCHECK(main_thread_checker_.CalledOnValidThread());
 
   if (seeking())
     return;
 
@@ skipping 682 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