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

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 3817b28fa3cfc65a6c9eb2142a86cd7bce63ea98..6031695502701eb071c14b5bf0cd3ca9790f0546 100644
--- a/cc/trees/proxy_impl.cc
+++ b/cc/trees/proxy_impl.cc
@@ -569,6 +569,13 @@ void ProxyImpl::SendBeginMainFrameNotExpectedSoon() {
                             proxy_main_weak_ptr_));
 }
 
+void ProxyImpl::ScheduledActionDoShortIdleWork(const BeginFrameArgs& args) {
+  DCHECK(IsImplThread());
+  MainThreadTaskRunner()->PostTask(
+      FROM_HERE,
+      base::Bind(&ProxyMain::DoShortIdleWork, proxy_main_weak_ptr_, args));
+}
+
 DrawResult ProxyImpl::DrawInternal(bool forced_draw) {
   TRACE_EVENT_SYNTHETIC_DELAY("cc.Draw");