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

ui/events/devices/touchscreen_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_TOUCHSCREEN_DEVICE_H_
+#define UI_EVENTS_DEVICES_TOUCHSCREEN_DEVICE_H_
+
+#include <string>
+
+#include "ui/events/devices/events_devices_export.h"
+#include "ui/events/devices/input_device.h"
+#include "ui/gfx/geometry/size.h"
+
+namespace ui {
+
+// Represents a Touchscreen device state.
+struct EVENTS_DEVICES_EXPORT TouchscreenDevice : public InputDevice {
+  // Creates an invalid touchscreen device.
+  TouchscreenDevice();
+
+  TouchscreenDevice(int id,
+                    InputDeviceType type,
+                    const std::string& name,
+                    const gfx::Size& size,
+                    int touch_points);
+
+  TouchscreenDevice(const InputDevice& input_device,
+                    const gfx::Size& size,
+                    int touch_points);
+
+  gfx::Size size;    // Size of the touch screen area.
+  int touch_points;  // The number of touch points this device supports (0 if
+                     // unknown).
+};
+
+}  // namespace ui
+
+#endif  // UI_EVENTS_DEVICES_TOUCHSCREEN_DEVICE_H_