cc: Split Proxy to eliminate unnecessary dependencies on the impl side

cc/layers/layer_iterator_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/layer_iterator.h"
 
 #include <vector>
 
 #include "cc/layers/layer.h"
 #include "cc/test/fake_layer_tree_host.h"
@@ skipping 75 matching lines @@
     if (it.represents_contributing_render_surface())
       layer->count_representing_contributing_surface_ = count;
     if (it.represents_itself())
       layer->count_representing_itself_ = count;
   }
 }
 
 class LayerIteratorTest : public testing::Test {
  public:
   LayerIteratorTest()
-      : host_impl_(&proxy_, &shared_bitmap_manager_, &task_graph_runner_),
+      : host_impl_(&task_runner_provider_,
+                   &shared_bitmap_manager_,
+                   &task_graph_runner_),
         id_(1) {}
 
   scoped_ptr<TestLayerImpl> CreateLayer() {
     return TestLayerImpl::Create(host_impl_.active_tree(), id_++);
   }
 
  protected:
-  FakeImplProxy proxy_;
+  FakeImplTaskRunnerProvider task_runner_provider_;
   TestSharedBitmapManager shared_bitmap_manager_;
   TestTaskGraphRunner task_graph_runner_;
   FakeLayerTreeHostImpl host_impl_;
 
   int id_;
 };
 
 TEST_F(LayerIteratorTest, EmptyTree) {
   LayerImplList render_surface_layer_list;
 
@@ skipping 133 matching lines @@
   EXPECT_COUNT(root21_ptr, -1, -1, 9);
   EXPECT_COUNT(root22_ptr, 7, 8, 6);
   EXPECT_COUNT(root221_ptr, -1, -1, 5);
   EXPECT_COUNT(root23_ptr, 3, 4, 2);
   EXPECT_COUNT(root231_ptr, -1, -1, 1);
   EXPECT_COUNT(root3_ptr, -1, -1, 0);
 }
 
 }  // namespace
 }  // namespace cc