Sync ui/events to chromium @ https://codereview.chromium.org/1210203002

ui/events/devices/input_device.h

+// Copyright 2014 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 UI_EVENTS_DEVICES_INPUT_DEVICE_H_
+#define UI_EVENTS_DEVICES_INPUT_DEVICE_H_
+
+#include <stdint.h>
+#include <string>
+
+#include "ui/events/devices/events_devices_export.h"
+
+namespace ui {
+
+enum InputDeviceType {
+  INPUT_DEVICE_INTERNAL,  // Internally connected input device.
+  INPUT_DEVICE_EXTERNAL,  // Known externally connected input device.
+  INPUT_DEVICE_UNKNOWN,   // Device that may or may not be an external device.
+};
+
+// Represents an input device state.
+struct EVENTS_DEVICES_EXPORT InputDevice {
+  static const int kInvalidId;
+
+  // Creates an invalid input device.
+  InputDevice();
+
+  InputDevice(int id, InputDeviceType type, const std::string& name);
+  InputDevice(int id,
+              InputDeviceType type,
+              const std::string& name,
+              uint16_t vendor,
+              uint16_t product);
+  virtual ~InputDevice();
+
+  // ID of the device. This ID is unique between all input devices.
+  int id;
+
+  // The type of the input device.
+  InputDeviceType type;
+
+  // Name of the device.
+  std::string name;
+
+  // USB-style device identifiers, where available, or 0 if unavailable.
+  uint16_t vendor_id;
+  uint16_t product_id;
+};
+
+}  // namespace ui
+
+#endif  // UI_EVENTS_DEVICES_INPUT_DEVICE_H_