Create a new action triggered when a BeginMainFrame is not expected before vsync

cc/trees/single_thread_proxy.cc

Index: cc/trees/single_thread_proxy.cc
diff --git a/cc/trees/single_thread_proxy.cc b/cc/trees/single_thread_proxy.cc
index eeae9b6caf8a2314eff0c5b06a1a0e636cce4da3..ec9bad9f5b6ac31944ee5994b5e3ecf8cc19eaed 100644
--- a/cc/trees/single_thread_proxy.cc
+++ b/cc/trees/single_thread_proxy.cc
@@ -623,6 +623,11 @@ void SingleThreadProxy::SendBeginMainFrameNotExpectedSoon() {
   layer_tree_host_->BeginMainFrameNotExpectedSoon();
 }
 
+void SingleThreadProxy::ScheduledActionDoShortIdleWork(
+    const BeginFrameArgs& args) {
+  layer_tree_host_->DoShortIdleWork(args);
+}
+
 void SingleThreadProxy::BeginMainFrame(const BeginFrameArgs& begin_frame_args) {
   if (scheduler_on_impl_thread_) {
     scheduler_on_impl_thread_->NotifyBeginMainFrameStarted(