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 8e1a16b5e3345d840a758147a99f3979c7a0d7d9..8c59145a74498b604b90c813b72b77853e3934a7 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
@@ -717,6 +720,8 @@ 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);
 };