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

cc/test/fake_layer_tree_host.h

 // 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.
 
 #ifndef CC_TEST_FAKE_LAYER_TREE_HOST_H_
 #define CC_TEST_FAKE_LAYER_TREE_HOST_H_
 
 #include "cc/debug/micro_benchmark_controller.h"
-#include "cc/test/fake_impl_proxy.h"
+#include "cc/test/fake_impl_task_runner_provider.h"
 #include "cc/test/fake_layer_tree_host_client.h"
 #include "cc/test/fake_layer_tree_host_impl.h"
 #include "cc/test/test_shared_bitmap_manager.h"
 #include "cc/trees/layer_tree_host.h"
 #include "cc/trees/layer_tree_impl.h"
 #include "cc/trees/tree_synchronizer.h"
 
 namespace cc {
 class TestTaskGraphRunner;
 
@@ skipping 32 matching lines @@
     return &micro_benchmark_controller_;
   }
 
   bool needs_commit() { return needs_commit_; }
 
  protected:
   FakeLayerTreeHost(FakeLayerTreeHostClient* client,
                     LayerTreeHost::InitParams* params);
 
  private:
-  FakeImplProxy proxy_;
+  FakeImplTaskRunnerProvider task_runner_provider_;
   FakeLayerTreeHostClient* client_;
   TestSharedBitmapManager manager_;
   FakeLayerTreeHostImpl host_impl_;
   bool needs_commit_;
 };
 
 }  // namespace cc
 
 #endif  // CC_TEST_FAKE_LAYER_TREE_HOST_H_