media: Report initial video height to UMA

media/blink/webmediaplayer_impl.h

Index: media/blink/webmediaplayer_impl.h
diff --git a/media/blink/webmediaplayer_impl.h b/media/blink/webmediaplayer_impl.h
index 5be40d1fdd93ffc0474695a85cbe1ea917b55c7c..406490765b7e4031765354cd12385e557b14c2c9 100644
--- a/media/blink/webmediaplayer_impl.h
+++ b/media/blink/webmediaplayer_impl.h
@@ -458,6 +458,9 @@ class MEDIA_BLINK_EXPORT WebMediaPlayerImpl
   // handling a src= or MSE based playback.
   void RecordUnderflowDuration(base::TimeDelta duration);
 
+  // Records |natural_size| to MediaLog and video height to UMA.
+  void RecordVideoNaturalSize(const gfx::Size& natural_size);
+
   blink::WebLocalFrame* frame_;
 
   // The playback state last reported to |delegate_|, to avoid setting duplicate
@@ -721,6 +724,8 @@ class MEDIA_BLINK_EXPORT WebMediaPlayerImpl
 
   base::CancelableCallback<void(base::TimeTicks)> frame_time_report_cb_;
 
+  bool initial_video_height_recorded_ = false;
+
   DISALLOW_COPY_AND_ASSIGN(WebMediaPlayerImpl);
 };