Remove parts of //cc we aren't using

cc/test/fake_ui_resource_layer_tree_host_impl.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_UI_RESOURCE_LAYER_TREE_HOST_IMPL_H_
-#define CC_TEST_FAKE_UI_RESOURCE_LAYER_TREE_HOST_IMPL_H_
-
-#include "base/containers/hash_tables.h"
-#include "cc/test/fake_layer_tree_host_impl.h"
-
-namespace cc {
-
-class FakeUIResourceLayerTreeHostImpl : public FakeLayerTreeHostImpl {
- public:
-  explicit FakeUIResourceLayerTreeHostImpl(Proxy* proxy,
-                                           SharedBitmapManager* manager);
-  ~FakeUIResourceLayerTreeHostImpl() override;
-
-  void CreateUIResource(UIResourceId uid,
-                        const UIResourceBitmap& bitmap) override;
-
-  void DeleteUIResource(UIResourceId uid) override;
-
-  ResourceProvider::ResourceId ResourceIdForUIResource(
-      UIResourceId uid) const override;
-
-  bool IsUIResourceOpaque(UIResourceId uid) const override;
-
- private:
-  ResourceProvider::ResourceId fake_next_resource_id_;
-  typedef base::hash_map<UIResourceId, LayerTreeHostImpl::UIResourceData>
-      UIResourceMap;
-  UIResourceMap fake_ui_resource_map_;
-};
-
-}  // namespace cc
-
-#endif  // CC_TEST_FAKE_UI_RESOURCE_LAYER_TREE_HOST_IMPL_H_