Block internal PlatformEvents before they are dispatched in touchview.

ash/wm/maximize_mode/internal_input_device_list_x11.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 ASH_WM_MAXIMIZE_MODE_INTERNAL_INPUT_DEVICE_LIST_X11_H_
-#define ASH_WM_MAXIMIZE_MODE_INTERNAL_INPUT_DEVICE_LIST_X11_H_
-
-#include <set>
-
-#include "ash/wm/maximize_mode/internal_input_device_list.h"
-#include "base/macros.h"
-
-namespace ui {
-class Event;
-}
-
-namespace ash {
-
-// Identifies which input devices are internal and provides a helper function to
-// test if an input event came from an internal device.
-class InternalInputDeviceListX11 : public InternalInputDeviceList {
- public:
-  InternalInputDeviceListX11();
-  virtual ~InternalInputDeviceListX11();
-
-  // InternalInputDeviceList:
-  virtual bool IsEventFromInternalDevice(const ui::Event* event) OVERRIDE;
-
- private:
-  // Tracks the device ids of internal input devices.
-  std::set<int> internal_device_ids_;
-
-  DISALLOW_COPY_AND_ASSIGN(InternalInputDeviceListX11);
-};
-
-}  // namespace ash
-
-#endif  // ASH_WM_MAXIMIZE_MODE_INTERNAL_INPUT_DEVICE_LIST_X11_H_