[cc] Add and plumb CFS::DidNotProduceFrame.

cc/trees/proxy_impl.cc

Index: cc/trees/proxy_impl.cc
diff --git a/cc/trees/proxy_impl.cc b/cc/trees/proxy_impl.cc
index 3d3b4a6539d88103df901bc209211713999a9d3c..01a96109c89b35458a7809fa057bb4e4aea17778 100644
--- a/cc/trees/proxy_impl.cc
+++ b/cc/trees/proxy_impl.cc
@@ -483,6 +483,11 @@ void ProxyImpl::DidFinishImplFrame() {
   layer_tree_host_impl_->DidFinishImplFrame();
 }
 
+void ProxyImpl::DidNotProduceFrame(const BeginFrameAck& ack) {
+  DCHECK(IsImplThread());
+  layer_tree_host_impl_->DidNotProduceFrame(ack);
+}
+
 void ProxyImpl::ScheduledActionSendBeginMainFrame(const BeginFrameArgs& args) {
   DCHECK(IsImplThread());
   unsigned int begin_frame_id = nextBeginFrameId++;