Mac CoreAnimation compositor in the browser process

cc/output/gl_renderer.cc

Index: cc/output/gl_renderer.cc
diff --git a/cc/output/gl_renderer.cc b/cc/output/gl_renderer.cc
index ae879e21d37ece258a1a2ea3d06cf699b4daa85e..0a2ae464c58ef155487661305cf5bf6c4aadb728 100644
--- a/cc/output/gl_renderer.cc
+++ b/cc/output/gl_renderer.cc
@@ -3592,6 +3592,16 @@ bool GLRenderer::IsContextLost() {
 }
 
 void GLRenderer::ScheduleCALayers(DrawingFrame* frame) {
+  output_surface_->ProcessCALayers(frame->ca_layer_overlay_list);
+  for (CALayerOverlay& ca_layer_overlay : frame->ca_layer_overlay_list) {
+    if (ca_layer_overlay.resource_lock) {
+      pending_overlay_resources_.push_back(
+          std::move(ca_layer_overlay.resource_lock));
+    }
+  }
+  frame->ca_layer_overlay_list.clear();
+  return;
+  
   for (CALayerOverlay& ca_layer_overlay : frame->ca_layer_overlay_list) {
     unsigned texture_id = 0;
     if (ca_layer_overlay.resource_lock) {