cc: Pass Occlusion instead of OcclusionTracker to LayerImpls

cc/layers/ui_resource_layer_impl_unittest.cc

 // Copyright 2013 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/layers/append_quads_data.h"
 #include "cc/layers/ui_resource_layer_impl.h"
 #include "cc/quads/draw_quad.h"
 #include "cc/resources/ui_resource_bitmap.h"
 #include "cc/resources/ui_resource_client.h"
 #include "cc/test/fake_impl_proxy.h"
@@ skipping 28 matching lines @@
   UIResourceBitmap bitmap(bitmap_size, opaque);
 
   host_impl->CreateUIResource(uid, bitmap);
   layer->SetUIResourceId(uid);
 
   return layer.Pass();
 }
 
 void QuadSizeTest(scoped_ptr<UIResourceLayerImpl> layer,
                   size_t expected_quad_size) {
-  MockOcclusionTracker<LayerImpl> occlusion_tracker;
   scoped_ptr<RenderPass> render_pass = RenderPass::Create();
 
   AppendQuadsData data;
-  layer->AppendQuads(render_pass.get(), occlusion_tracker, &data);
+  layer->AppendQuads(render_pass.get(), Occlusion(), &data);
 
   // Verify quad rects
   const QuadList& quads = render_pass->quad_list;
   EXPECT_EQ(expected_quad_size, quads.size());
 }
 
 TEST(UIResourceLayerImplTest, VerifyDrawQuads) {
   FakeImplProxy proxy;
   TestSharedBitmapManager shared_bitmap_manager;
   FakeUIResourceLayerTreeHostImpl host_impl(&proxy, &shared_bitmap_manager);
@@ skipping 16 matching lines @@
   layer = GenerateUIResourceLayer(&host_impl,
                                   bitmap_size,
                                   layer_size,
                                   opaque,
                                   uid);
   QuadSizeTest(layer.Pass(), expected_quad_size);
 }
 
 void OpaqueBoundsTest(scoped_ptr<UIResourceLayerImpl> layer,
                  const gfx::Rect& expected_opaque_bounds) {
-  MockOcclusionTracker<LayerImpl> occlusion_tracker;
   scoped_ptr<RenderPass> render_pass = RenderPass::Create();
 
   AppendQuadsData data;
-  layer->AppendQuads(render_pass.get(), occlusion_tracker, &data);
+  layer->AppendQuads(render_pass.get(), Occlusion(), &data);
 
   // Verify quad rects
   const QuadList& quads = render_pass->quad_list;
   EXPECT_GE(quads.size(), (size_t)0);
   gfx::Rect opaque_rect = quads.front()->opaque_rect;
   EXPECT_EQ(expected_opaque_bounds, opaque_rect);
 }
 
 TEST(UIResourceLayerImplTest, VerifySetOpaqueOnSkBitmap) {
   FakeImplProxy proxy;
@@ skipping 94 matching lines @@
     LayerTestCommon::VerifyQuadsAreOccluded(
         impl.quad_list(), occluded, &partially_occluded_count);
     // The layer outputs one quad, which is partially occluded.
     EXPECT_EQ(1u, impl.quad_list().size());
     EXPECT_EQ(1u, partially_occluded_count);
   }
 }
 
 }  // namespace
 }  // namespace cc