cc: Pass Occlusion instead of OcclusionTracker to LayerImpls

cc/trees/layer_tree_host_impl.cc

 // Copyright 2011 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/layer_tree_host_impl.h"
 
 #include <algorithm>
 #include <limits>
 
 #include "base/basictypes.h"
@@ skipping 532 matching lines @@
         << output_surface_->capabilities().deferred_gl_initialization;
     return DRAW_MODE_SOFTWARE;
   }
 }
 
 static void AppendQuadsForLayer(
     RenderPass* target_render_pass,
     LayerImpl* layer,
     const OcclusionTracker<LayerImpl>& occlusion_tracker,
     AppendQuadsData* append_quads_data) {
-  layer->AppendQuads(target_render_pass, occlusion_tracker, append_quads_data);
+  layer->AppendQuads(
+      target_render_pass,
+      occlusion_tracker.GetCurrentOcclusionForLayer(layer->draw_transform()),
+      append_quads_data);
 }
 
 static void AppendQuadsForRenderSurfaceLayer(
     RenderPass* target_render_pass,
     LayerImpl* layer,
     const RenderPass* contributing_render_pass,
     const OcclusionTracker<LayerImpl>& occlusion_tracker,
     AppendQuadsData* append_quads_data) {
   bool is_replica = false;
   layer->render_surface()->AppendQuads(target_render_pass,
@@ skipping 2813 matching lines @@
 }
 
 void LayerTreeHostImpl::UnregisterPictureLayerImpl(PictureLayerImpl* layer) {
   std::vector<PictureLayerImpl*>::iterator it =
       std::find(picture_layers_.begin(), picture_layers_.end(), layer);
   DCHECK(it != picture_layers_.end());
   picture_layers_.erase(it);
 }
 
 }  // namespace cc