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

content/renderer/gpu/render_widget_compositor.cc

Index: content/renderer/gpu/render_widget_compositor.cc
diff --git a/content/renderer/gpu/render_widget_compositor.cc b/content/renderer/gpu/render_widget_compositor.cc
index c54182c518e91c7e4310151538ee6577e78bc120..35256c0766eafdce381cd76ce972fdebe2bdeb03 100644
--- a/content/renderer/gpu/render_widget_compositor.cc
+++ b/content/renderer/gpu/render_widget_compositor.cc
@@ -1047,6 +1047,10 @@ void RenderWidgetCompositor::BeginMainFrameNotExpectedSoon() {
   compositor_deps_->GetRendererScheduler()->BeginFrameNotExpectedSoon();
 }
 
+void RenderWidgetCompositor::DoShortIdleWork(const cc::BeginFrameArgs& args) {
+  compositor_deps_->GetRendererScheduler()->DoShortIdleWork(args);
+}
+
 void RenderWidgetCompositor::UpdateLayerTreeHost() {
   delegate_->UpdateVisualState();
 }