Migrate GpuChildThread to use ConnectionFilter instead of the ChildThread's InterfaceRegistry to exp

chrome/gpu/chrome_content_gpu_client.h

 // Copyright 2016 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 CHROME_GPU_CHROME_CONTENT_GPU_CLIENT_H_
 #define CHROME_GPU_CHROME_CONTENT_GPU_CLIENT_H_
 
 #include <memory>
 
 #include "base/macros.h"
 #include "base/profiler/stack_sampling_profiler.h"
 #include "components/variations/child_process_field_trial_syncer.h"
 #include "content/public/gpu/content_gpu_client.h"
 
 class ChromeContentGpuClient : public content::ContentGpuClient {
  public:
   ChromeContentGpuClient();
   ~ChromeContentGpuClient() override;
 
   // content::ContentGpuClient:
   void Initialize(base::FieldTrialList::Observer* observer) override;

[Ken Rockot(use gerrit already), 2017/04/20 15:30:22]

need to update the signature here

-  void ExposeInterfacesToBrowser(
-      service_manager::InterfaceRegistry* registry,
+  void GpuServiceInitialized(
       const gpu::GpuPreferences& gpu_preferences) override;
-  void ConsumeInterfacesFromBrowser(
-      service_manager::Connector* connector) override;
 
  private:
   std::unique_ptr<variations::ChildProcessFieldTrialSyncer> field_trial_syncer_;
   // Used to profile process startup.
   base::StackSamplingProfiler stack_sampling_profiler_;
 
+#if defined(OS_CHROMEOS)
+  class GpuArcVideoServiceFactory;
+  std::unique_ptr<GpuArcVideoServiceFactory> gpu_arc_video_service_factory_;
+#endif
+
   DISALLOW_COPY_AND_ASSIGN(ChromeContentGpuClient);
 };
 
 #endif  // CHROME_GPU_CHROME_CONTENT_GPU_CLIENT_H_