[NOT LANDED] Revert of cc: Split ThreadProxy into ProxyMain and ProxyImpl

cc/test/test_hooks.cc

-// Copyright 2015 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/test/test_hooks.h"
-
-namespace cc {
-
-TestHooks::TestHooks() {}
-
-TestHooks::~TestHooks() {}
-
-DrawResult TestHooks::PrepareToDrawOnThread(
-    LayerTreeHostImpl* host_impl,
-    LayerTreeHostImpl::FrameData* frame_data,
-    DrawResult draw_result) {
-  return draw_result;
-}
-
-void TestHooks::CreateResourceAndTileTaskWorkerPool(
-    LayerTreeHostImpl* host_impl,
-    scoped_ptr<TileTaskWorkerPool>* tile_task_worker_pool,
-    scoped_ptr<ResourcePool>* resource_pool) {
-  host_impl->LayerTreeHostImpl::CreateResourceAndTileTaskWorkerPool(
-      tile_task_worker_pool, resource_pool);
-}
-
-}  // namespace cc