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 9b8cfa8cace58f1ac7bd4b47b14169a5f6588a90..7fa6eb65f3c1fd47aef076da96ddd007579249c8 100644
--- a/content/renderer/media/webmediaplayer_impl.cc
+++ b/content/renderer/media/webmediaplayer_impl.cc
@@ -666,6 +666,7 @@ 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();
+  mailbox_holder->sync_point = web_graphics_context->insertSyncPoint();

[dshwang, 2014/02/21 16:36:31]

I guess you did not insert the sync point for the purpose of performance,
because webgl context and video gl context are in the same process.
If so, I'll remove waitSyncPoint above and add a comment to be clear.

   return true;
 }