Update from https://crrev.com/316786

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_layer_tree_host_client.h"
@@ skipping 33 matching lines @@
   void UpdateLayers(ResourceUpdateQueue* queue) {
     LayerTreeHost::UpdateLayers(queue);
   }
 
   MicroBenchmarkController* GetMicroBenchmarkController() {
     return &micro_benchmark_controller_;
   }
 
   bool needs_commit() { return needs_commit_; }
 
- private:
+ protected:
   FakeLayerTreeHost(FakeLayerTreeHostClient* client,
                     const LayerTreeSettings& settings);
 
+ private:
   FakeImplProxy proxy_;
   FakeLayerTreeHostClient* client_;
   TestSharedBitmapManager manager_;
   FakeLayerTreeHostImpl host_impl_;
   bool needs_commit_;
 };
 
 }  // namespace cc
 
 #endif  // CC_TEST_FAKE_LAYER_TREE_HOST_H_