gpu: Have GpuService create and own GpuMemoryBufferFactory.

content/gpu/in_process_gpu_thread.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 CONTENT_GPU_IN_PROCESS_GPU_THREAD_H_
 #define CONTENT_GPU_IN_PROCESS_GPU_THREAD_H_
 
 #include <memory>
 
 #include "base/macros.h"
 #include "base/threading/thread.h"
 #include "content/common/content_export.h"
 #include "content/common/in_process_child_thread_params.h"
-#include "gpu/command_buffer/service/gpu_preferences.h"
-
-namespace gpu {
-class GpuMemoryBufferFactory;
-struct GpuPreferences;
-}
 
 namespace content {
 
 class GpuProcess;
 
 // This class creates a GPU thread (instead of a GPU process), when running
 // with --in-process-gpu or --single-process.
 class InProcessGpuThread : public base::Thread {
  public:
-  InProcessGpuThread(const InProcessChildThreadParams& params,
-                     const gpu::GpuPreferences& gpu_preferences);
+  explicit InProcessGpuThread(const InProcessChildThreadParams& params);
   ~InProcessGpuThread() override;
 
  protected:
   void Init() override;
   void CleanUp() override;
 
  private:
   InProcessChildThreadParams params_;
 
   // Deleted in CleanUp() on the gpu thread, so don't use smart pointers.
   GpuProcess* gpu_process_;
 
-  const gpu::GpuPreferences gpu_preferences_;
-
-  std::unique_ptr<gpu::GpuMemoryBufferFactory> gpu_memory_buffer_factory_;
-
   DISALLOW_COPY_AND_ASSIGN(InProcessGpuThread);
 };
 
 CONTENT_EXPORT base::Thread* CreateInProcessGpuThread(
-    const InProcessChildThreadParams& params,
-    const gpu::GpuPreferences& gpu_preferences);
+    const InProcessChildThreadParams& params);
 
 }  // namespace content
 
 #endif  // CONTENT_GPU_IN_PROCESS_GPU_THREAD_H_