[exo]CompositorFrameSinkHolder calls WillDraw in DidReceiveCompositorFrameAck

components/exo/surface.h

Index: components/exo/surface.h
diff --git a/components/exo/surface.h b/components/exo/surface.h
index 8e4a6ad9b5635b0906474e6f367b71a8cb3dad34..9c633b63691ce7e83e0c2f5b44867505cf477c88 100644
--- a/components/exo/surface.h
+++ b/components/exo/surface.h
@@ -191,8 +191,9 @@ class Surface : public ui::ContextFactoryObserver,
   // Returns a trace value representing the state of the surface.
   std::unique_ptr<base::trace_event::TracedValue> AsTracedValue() const;
 
-  // Call this to indicate that surface is being scheduled for a draw.
-  void WillDraw();
+  // Call this to indicate that the previous CompositorFrame is processed and
+  // the surface is being scheduled for a draw.
+  void DidReceiveCompositorFrameAck();
 
   // Called when the begin frame source has changed.
   void SetBeginFrameSource(cc::BeginFrameSource* begin_frame_source);