cc: Set read lock fences required for YUV native video frames.

cc/resources/video_resource_updater.cc

Index: cc/resources/video_resource_updater.cc
diff --git a/cc/resources/video_resource_updater.cc b/cc/resources/video_resource_updater.cc
index cd0789d4e0e1009f14a658d471cf78d0878e0fab..2cee5434f08e6d5fd5b1039b98c8f055ba28e04c 100644
--- a/cc/resources/video_resource_updater.cc
+++ b/cc/resources/video_resource_updater.cc
@@ -85,7 +85,9 @@ void VideoResourceUpdater::SetPlaneResourceUniqueId(
   plane_resource->timestamp = video_frame->timestamp();
 }
 
-VideoFrameExternalResources::VideoFrameExternalResources() : type(NONE) {}
+VideoFrameExternalResources::VideoFrameExternalResources()
+    : type(NONE), read_lock_fences_enabled(false) {
+}
 
 VideoFrameExternalResources::~VideoFrameExternalResources() {}
 
@@ -398,6 +400,7 @@ VideoFrameExternalResources VideoResourceUpdater::CreateForHardwarePlanes(
       break;
     case media::VideoFrame::I420:
       external_resources.type = VideoFrameExternalResources::YUV_RESOURCE;
+      external_resources.read_lock_fences_enabled = true;

[reveman, 2015/06/17 16:59:02]

We'll need this for all formats. Maybe just set it before it switch statement.

[Daniele Castagna, 2015/06/17 17:02:25]

Done.

       break;
 #if defined(OS_MACOSX) || defined(OS_CHROMEOS)
     case media::VideoFrame::NV12: