HW Video: Make media::VideoFrame handle the sync point of the compositor as well as webgl

content/renderer/media/webmediaplayer_impl.cc

Index: content/renderer/media/webmediaplayer_impl.cc
diff --git a/content/renderer/media/webmediaplayer_impl.cc b/content/renderer/media/webmediaplayer_impl.cc
index 411b814757cd4c0f737f2fb995bd249ecee8962f..a1824381b130241d2c3ec7eded9a560797db5f05 100644
--- a/content/renderer/media/webmediaplayer_impl.cc
+++ b/content/renderer/media/webmediaplayer_impl.cc
@@ -683,6 +683,7 @@ bool WebMediaPlayerImpl::copyVideoTextureToPlatformTexture(
   // The flush() operation is not necessary here. It is kept since the
   // performance will be better when it is added than not.
   web_graphics_context->flush();
+  video_frame->AppendReleaseSyncPoint(web_graphics_context->insertSyncPoint());
   return true;
 }