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 ba92086059b4a0febb21298d2fe64109e2172b5f..6d1ccb90416aad567724e0dd6c9b9ddda8e7b101 100644
--- a/content/renderer/media/webmediaplayer_ms.h
+++ b/content/renderer/media/webmediaplayer_ms.h
@@ -163,6 +163,8 @@ class CONTENT_EXPORT WebMediaPlayerMS
   // The callback for MediaStreamVideoRenderer to signal a new frame is
   // available.
   void OnFrameAvailable(const scoped_refptr<media::VideoFrame>& frame);
+  void OnRotationChanged(media::VideoRotation video_rotation, bool is_opaque);
+
   // Need repaint due to state change.
   void RepaintInternal();