cc: Apply occlusion before creating quads in RenderSurfaceImpl.

cc/trees/quad_culler.cc

 // Copyright 2012 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/trees/quad_culler.h"
 
 #include "cc/debug/debug_colors.h"
 #include "cc/layers/append_quads_data.h"
 #include "cc/layers/layer_impl.h"
 #include "cc/quads/debug_border_draw_quad.h"
@@ skipping 26 matching lines @@
   return current_shared_quad_state_;
 }
 
 gfx::Rect QuadCuller::UnoccludedContentRect(
     const gfx::Rect& content_rect,
     const gfx::Transform& draw_transform) {
   return occlusion_tracker_.UnoccludedContentRect(
       layer_->render_target(), content_rect, draw_transform);
 }
 
+gfx::Rect QuadCuller::UnoccludedContributingSurfaceContentRect(
+    const gfx::Rect& content_rect,
+    const gfx::Transform& draw_transform) {
+  return occlusion_tracker_.UnoccludedContributingSurfaceContentRect(
+      layer_, content_rect, draw_transform);
+}
+
 static inline bool AppendQuadInternal(
     scoped_ptr<DrawQuad> draw_quad,
     const gfx::Rect& culled_rect,
     QuadList* quad_list,
     const OcclusionTracker<LayerImpl>& occlusion_tracker,
     const LayerImpl* layer) {
   bool keep_quad = !culled_rect.IsEmpty();
   if (keep_quad) {
     draw_quad->visible_rect = culled_rect;
     quad_list->push_back(draw_quad.Pass());
@@ skipping 30 matching lines @@
 void QuadCuller::Append(scoped_ptr<DrawQuad> draw_quad) {
   DCHECK(draw_quad->shared_quad_state == current_shared_quad_state_);
   DCHECK(!shared_quad_state_list_->empty());
   DCHECK(shared_quad_state_list_->back() == current_shared_quad_state_);
   DCHECK(!draw_quad->rect.IsEmpty());
   DCHECK(!draw_quad->visible_rect.IsEmpty());
   quad_list_->push_back(draw_quad.Pass());
 }
 
 }  // namespace cc