Migrating majority of gamepad from content/browser/ to device/

content/browser/gamepad/gamepad_platform_data_fetcher_linux.h

-// Copyright (c) 2012 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_BROWSER_GAMEPAD_GAMEPAD_PLATFORM_DATA_FETCHER_LINUX_H_
-#define CONTENT_BROWSER_GAMEPAD_GAMEPAD_PLATFORM_DATA_FETCHER_LINUX_H_
-
-#include <stddef.h>
-
-#include <memory>
-#include <string>
-
-#include "base/compiler_specific.h"
-#include "base/macros.h"
-#include "content/browser/gamepad/gamepad_data_fetcher.h"
-
-extern "C" {
-struct udev_device;
-}
-
-namespace device {
-class UdevLinux;
-}
-
-namespace content {
-
-class GamepadPlatformDataFetcherLinux : public GamepadDataFetcher {
- public:
-  GamepadPlatformDataFetcherLinux();
-  ~GamepadPlatformDataFetcherLinux() override;
-
-  // GamepadDataFetcher implementation.
-  void GetGamepadData(blink::WebGamepads* pads,
-                      bool devices_changed_hint) override;
-
- private:
-  void RefreshDevice(udev_device* dev);
-  void EnumerateDevices();
-  void ReadDeviceData(size_t index);
-
-  // File descriptor for the /dev/input/js* devices. -1 if not in use.
-  int device_fd_[blink::WebGamepads::itemsLengthCap];
-
-  std::unique_ptr<device::UdevLinux> udev_;
-
-  DISALLOW_COPY_AND_ASSIGN(GamepadPlatformDataFetcherLinux);
-};
-
-}  // namespace content
-
-#endif  // CONTENT_BROWSER_GAMEPAD_GAMEPAD_PLATFORM_DATA_FETCHER_LINUX_H_