CompositorFrameSinkSupport should return resources before sending an ack

cc/surfaces/compositor_frame_sink_support.cc

Index: cc/surfaces/compositor_frame_sink_support.cc
diff --git a/cc/surfaces/compositor_frame_sink_support.cc b/cc/surfaces/compositor_frame_sink_support.cc
index 0d2e90bd0a37b42e852d75af9227b41b43b93c09..23e44813919b4d5a33cb8af29376fe25663acfe2 100644
--- a/cc/surfaces/compositor_frame_sink_support.cc
+++ b/cc/surfaces/compositor_frame_sink_support.cc
@@ -134,11 +134,14 @@ void CompositorFrameSinkSupport::DidReceiveCompositorFrameAck() {
 
   if (!client_)
     return;
-  client_->DidReceiveCompositorFrameAck();
+
+  // We return the resources before sending an ack so they can be reused in
+  // making the next CompositorFrame.
   if (!surface_returned_resources_.empty()) {
     client_->ReclaimResources(surface_returned_resources_);
     surface_returned_resources_.clear();
   }
+  client_->DidReceiveCompositorFrameAck();
 }
 
 void CompositorFrameSinkSupport::ForceReclaimResources() {