cc: Pass Occlusion instead of OcclusionTracker to LayerImpls

cc/trees/layer_tree_host_unittest.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.h"
 
 #include <algorithm>
 
 #include "base/auto_reset.h"
 #include "base/synchronization/lock.h"
@@ skipping 1610 matching lines @@
 
 class EvictionTestLayerImpl : public LayerImpl {
  public:
   static scoped_ptr<EvictionTestLayerImpl> Create(LayerTreeImpl* tree_impl,
                                                   int id) {
     return make_scoped_ptr(new EvictionTestLayerImpl(tree_impl, id));
   }
   virtual ~EvictionTestLayerImpl() {}
 
   virtual void AppendQuads(RenderPass* render_pass,
-                           const OcclusionTracker<LayerImpl>& occlusion_tracker,
+                           const Occlusion& occlusion_in_content_space,
                            AppendQuadsData* append_quads_data) override {
     ASSERT_TRUE(has_texture_);
     ASSERT_NE(0u, layer_tree_impl()->resource_provider()->num_resources());
   }
 
   void SetHasTexture(bool has_texture) { has_texture_ = has_texture; }
 
  private:
   EvictionTestLayerImpl(LayerTreeImpl* tree_impl, int id)
       : LayerImpl(tree_impl, id), has_texture_(false) {}
@@ skipping 3431 matching lines @@
   bool visible_;
 
   FakeContentLayerClient client_;
   scoped_refptr<FakePictureLayer> picture_layer_;
 };
 
 // TODO(vmpstr): Enable with single thread impl-side painting.
 MULTI_THREAD_TEST_F(LayerTreeHostTestActivateOnInvisible);
 
 }  // namespace cc