Mac CoreAnimation compositor in the browser process

cc/output/gl_renderer.cc

 // Copyright 2010 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "cc/output/gl_renderer.h"
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <algorithm>
@@ skipping 3574 matching lines @@
   // PrepareSurfaceForPass also clears the surface, which is not desired when
   // restoring.
   SetViewport();
 }
 
 bool GLRenderer::IsContextLost() {
   return gl_->GetGraphicsResetStatusKHR() != GL_NO_ERROR;
 }
 
 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) {
       texture_id = ca_layer_overlay.resource_lock->GetTextureId();
       pending_overlay_resources_.push_back(
           std::move(ca_layer_overlay.resource_lock));
     }
     GLfloat contents_rect[4] = {
         ca_layer_overlay.contents_rect.x(), ca_layer_overlay.contents_rect.y(),
         ca_layer_overlay.contents_rect.width(),
@@ skipping 39 matching lines @@
       texture_id = pending_overlay_resources_.back()->GetTextureId();
     }
 
     context_support_->ScheduleOverlayPlane(
         overlay.plane_z_order, overlay.transform, texture_id,
         ToNearestRect(overlay.display_rect), overlay.uv_rect);
   }
 }
 
 }  // namespace cc