Movw GamepadService out of content/browser/ and into device/

content/browser/gamepad/gamepad_shared_buffer_impl.cc

-// 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.
-
-#include "content/browser/gamepad/gamepad_shared_buffer_impl.h"
-
-#include "content/common/gamepad_hardware_buffer.h"
-
-namespace content {
-
-GamepadSharedBufferImpl::GamepadSharedBufferImpl() {
-  size_t data_size = sizeof(GamepadHardwareBuffer);
-  bool res = shared_memory_.CreateAndMapAnonymous(data_size);
-  CHECK(res);
-
-  void* mem = shared_memory_.memory();
-  DCHECK(mem);
-  new (mem) GamepadHardwareBuffer();
-}
-
-GamepadSharedBufferImpl::~GamepadSharedBufferImpl() {
-}
-
-base::SharedMemory* GamepadSharedBufferImpl::shared_memory() {
-  return &shared_memory_;
-}
-
-blink::WebGamepads* GamepadSharedBufferImpl::buffer() {
-  return &(hardware_buffer()->buffer);
-}
-
-GamepadHardwareBuffer* GamepadSharedBufferImpl::hardware_buffer() {
-  void* mem = shared_memory_.memory();
-  DCHECK(mem);
-  return static_cast<GamepadHardwareBuffer*>(mem);
-}
-
-void GamepadSharedBufferImpl::WriteBegin() {
-  hardware_buffer()->sequence.WriteBegin();
-}
-
-void GamepadSharedBufferImpl::WriteEnd() {
-  hardware_buffer()->sequence.WriteEnd();
-}
-
-}  // namespace content