Reset WebMediaPlayerMS video layer on rotation change

content/renderer/media/webmediaplayer_ms.h

Index: content/renderer/media/webmediaplayer_ms.h
diff --git a/content/renderer/media/webmediaplayer_ms.h b/content/renderer/media/webmediaplayer_ms.h
index 0adacb2b382be2f9bc7918bc891ebf3b7322ec79..88963760c4849bc1cc19126ada2c0372064dab44 100644
--- a/content/renderer/media/webmediaplayer_ms.h
+++ b/content/renderer/media/webmediaplayer_ms.h
@@ -163,6 +163,10 @@ class CONTENT_EXPORT WebMediaPlayerMS
   void OnFirstFrameReceived(media::VideoRotation video_rotation,
                             bool is_opaque);
   void OnOpacityChanged(bool is_opaque);
+  void OnRotationChanged(media::VideoRotation video_rotation, bool is_opaque);
+
+  // Initializes |video_weblayer_| with given params.
+  void ResetVideoLayer(media::VideoRotation video_rotation, bool is_opaque);
 
   // Need repaint due to state change.
   void RepaintInternal();