[exo]CompositorFrameSinkHolder calls WillDraw in DidReceiveCompositorFrameAck

components/exo/surface.cc

Index: components/exo/surface.cc
diff --git a/components/exo/surface.cc b/components/exo/surface.cc
index 57a45f616823460b66219c4fb8775de0936aef05..86706c330a36f473e84f8ccbd0fa01dcc5f4dc91 100644
--- a/components/exo/surface.cc
+++ b/components/exo/surface.cc
@@ -464,6 +464,13 @@ void Surface::CommitSurfaceHierarchy() {
     local_surface_id_ = id_allocator_.GenerateId();
   }
 
+  // Move pending frame callbacks to the end of frame_callbacks_.
+  frame_callbacks_.splice(frame_callbacks_.end(), pending_frame_callbacks_);
+
+  // Move pending presentation callbacks to the end of presentation_callbacks_.
+  presentation_callbacks_.splice(presentation_callbacks_.end(),
+                                 pending_presentation_callbacks_);
+
   UpdateSurface(false);
 
   if (old_local_surface_id != local_surface_id_) {
@@ -492,13 +499,6 @@ void Surface::CommitSurfaceHierarchy() {
          compositor_frame_sink_holder_->HasReleaseCallbackForResource(
              current_resource_.id));
 
-  // Move pending frame callbacks to the end of frame_callbacks_.
-  frame_callbacks_.splice(frame_callbacks_.end(), pending_frame_callbacks_);
-
-  // Move pending presentation callbacks to the end of presentation_callbacks_.
-  presentation_callbacks_.splice(presentation_callbacks_.end(),
-                                 pending_presentation_callbacks_);
-
   // Synchronize window hierarchy. This will position and update the stacking
   // order of all sub-surfaces after committing all pending state of sub-surface
   // descendants.