Plumb allow_overlay flag for video path into cc

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 f6d08d1e3f98e07c0c64c7931af0248fa436c417..aff06216a0a2e156be08d9d3846007eedacfb9e5 100644
--- a/cc/resources/video_resource_updater.cc
+++ b/cc/resources/video_resource_updater.cc
@@ -386,6 +386,8 @@ VideoFrameExternalResources VideoResourceUpdater::CreateForHardwarePlanes(
       TextureMailbox(mailbox_holder->mailbox,
                      mailbox_holder->texture_target,
                      mailbox_holder->sync_point));
+  external_resources.mailboxes.back().set_allow_overlay(
+      video_frame->allow_overlay());
   external_resources.release_callbacks.push_back(
       base::Bind(&ReturnTexture, AsWeakPtr(), video_frame));
   return external_resources;