Using mojo::ScopedSharedBufferHandle directly in GamepadSharedMemoryReader

content/renderer/gamepad_shared_memory_reader.h

 // Copyright (c) 2011 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_RENDERER_GAMEPAD_SHARED_MEMORY_READER_H_
 #define CONTENT_RENDERER_GAMEPAD_SHARED_MEMORY_READER_H_
 
 #include <memory>
 
 #include "base/macros.h"
-#include "base/memory/shared_memory.h"
 #include "content/public/renderer/renderer_gamepad_provider.h"
 #include "device/base/synchronization/shared_memory_seqlock_buffer.h"
 #include "device/gamepad/public/interfaces/gamepad.mojom.h"
 #include "mojo/public/cpp/bindings/binding.h"
-#include "mojo/public/cpp/system/platform_handle.h"
+#include "mojo/public/cpp/system/buffer.h"
 #include "third_party/WebKit/public/platform/WebGamepads.h"
 
 namespace content {
 
 typedef device::SharedMemorySeqLockBuffer<blink::WebGamepads>
     GamepadHardwareBuffer;
 
 class GamepadSharedMemoryReader : public RendererGamepadProvider,
                                   public device::mojom::GamepadObserver {
  public:
   explicit GamepadSharedMemoryReader(RenderThread* thread);
   ~GamepadSharedMemoryReader() override;
 
   // RendererGamepadProvider implementation.
   void SampleGamepads(blink::WebGamepads& gamepads) override;
   void Start(blink::WebPlatformEventListener* listener) override;
 
  protected:
   // PlatformEventObserver protected methods.
   void SendStartMessage() override;
   void SendStopMessage() override;
 
  private:
   // device::mojom::GamepadObserver methods.
   void GamepadConnected(int index, const blink::WebGamepad& gamepad) override;
   void GamepadDisconnected(int index,
                            const blink::WebGamepad& gamepad) override;
 
-  base::SharedMemoryHandle renderer_shared_memory_handle_;
-  std::unique_ptr<base::SharedMemory> renderer_shared_memory_;
+  mojo::ScopedSharedBufferHandle renderer_shared_buffer_handle_;
+  mojo::ScopedSharedBufferMapping renderer_shared_buffer_mapping_;
   GamepadHardwareBuffer* gamepad_hardware_buffer_;
 
   bool ever_interacted_with_;
 
   mojo::Binding<device::mojom::GamepadObserver> binding_;
   device::mojom::GamepadMonitorPtr gamepad_monitor_;
 
   DISALLOW_COPY_AND_ASSIGN(GamepadSharedMemoryReader);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_GAMEPAD_SHARED_MEMORY_READER_H_