Inform MediaObserver when video natural size changes.

media/blink/webmediaplayer_impl.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 "media/blink/webmediaplayer_impl.h"
 
 #include <algorithm>
 #include <cmath>
 #include <limits>
 #include <string>
@@ skipping 1294 matching lines @@
   if (rotated_size == pipeline_metadata_.natural_size)
     return;
 
   TRACE_EVENT0("media", "WebMediaPlayerImpl::OnNaturalSizeChanged");
   media_log_->AddEvent(media_log_->CreateVideoSizeSetEvent(
       rotated_size.width(), rotated_size.height()));
 
   if (overlay_enabled_ && surface_manager_)
     surface_manager_->NaturalSizeChanged(rotated_size);
 
-  if (pipeline_metadata_.natural_size.IsEmpty()) {
+  gfx::Size old_size = pipeline_metadata_.natural_size;
+  pipeline_metadata_.natural_size = rotated_size;
+  if (old_size.IsEmpty()) {
     // WatchTimeReporter doesn't report metrics for empty videos. Re-create
     // |watch_time_reporter_| if we didn't originally know the video size.
     CreateWatchTimeReporter();
   }
+  client_->sizeChanged();
 
-  pipeline_metadata_.natural_size = rotated_size;
-  client_->sizeChanged();
+  if (observer_) {
+    PipelineMetadata metadata = pipeline_metadata_;
+    metadata.natural_size = size;
+    observer_->OnMetadataChanged(metadata);
+  }
 }
 
 void WebMediaPlayerImpl::OnVideoOpacityChange(bool opaque) {
   DCHECK(main_task_runner_->BelongsToCurrentThread());
   DCHECK_NE(ready_state_, WebMediaPlayer::ReadyStateHaveNothing);
 
   opaque_ = opaque;
   // Modify content opaqueness of cc::Layer directly so that
   // SetContentsOpaqueIsFixed is ignored.
   if (video_weblayer_)
@@ skipping 701 matching lines @@
   return pipeline_metadata_.video_rotation == VIDEO_ROTATION_0;
 }
 
 void WebMediaPlayerImpl::ActivateViewportIntersectionMonitoring(bool activate) {
   DCHECK(main_task_runner_->BelongsToCurrentThread());
 
   client_->activateViewportIntersectionMonitoring(activate);
 }
 
 }  // namespace media