cc: Clean up OcclusionTracker template parameters.

cc/layers/nine_patch_layer_unittest.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/layers/nine_patch_layer.h"
 
 #include "cc/debug/overdraw_metrics.h"
 #include "cc/resources/prioritized_resource_manager.h"
 #include "cc/resources/resource_provider.h"
 #include "cc/resources/resource_update_queue.h"
@@ skipping 39 matching lines @@
   scoped_refptr<NinePatchLayer> test_layer = NinePatchLayer::Create();
   ASSERT_TRUE(test_layer.get());
   test_layer->SetIsDrawable(true);
   test_layer->SetBounds(gfx::Size(100, 100));
 
   layer_tree_host_->SetRootLayer(test_layer);
   Mock::VerifyAndClearExpectations(layer_tree_host_.get());
   EXPECT_EQ(test_layer->layer_tree_host(), layer_tree_host_.get());
 
   ResourceUpdateQueue queue;
-  OcclusionTracker occlusion_tracker(gfx::Rect(), false);
+  OcclusionTracker<Layer> occlusion_tracker(gfx::Rect(), false);
   test_layer->SavePaintProperties();
   test_layer->Update(&queue, &occlusion_tracker);
 
   EXPECT_FALSE(test_layer->DrawsContent());
 
   SkBitmap bitmap;
   bitmap.setConfig(SkBitmap::kARGB_8888_Config, 10, 10);
   bitmap.allocPixels();
   bitmap.setImmutable();
 
   scoped_ptr<ScopedUIResource> resource = ScopedUIResource::Create(
       layer_tree_host_.get(), UIResourceBitmap(bitmap));
   gfx::Rect aperture(5, 5, 1, 1);
   bool fill_center = true;
   test_layer->SetAperture(aperture);
   test_layer->SetUIResourceId(resource->id());
   test_layer->SetFillCenter(fill_center);
   test_layer->Update(&queue, &occlusion_tracker);
 
   EXPECT_TRUE(test_layer->DrawsContent());
 }
 
 }  // namespace
 }  // namespace cc