Block internal PlatformEvents before they are dispatched in touchview.

ash/wm/maximize_mode/internal_input_device_list.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_H_
-#define ASH_WM_MAXIMIZE_MODE_INTERNAL_INPUT_DEVICE_LIST_H_
-
-#include "ash/ash_export.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 ASH_EXPORT InternalInputDeviceList {
- public:
-  InternalInputDeviceList() {}
-  virtual ~InternalInputDeviceList() {}
-
-  virtual bool IsEventFromInternalDevice(const ui::Event* event) = 0;
-
- private:
-  DISALLOW_COPY_AND_ASSIGN(InternalInputDeviceList);
-};
-
-}  // namespace ash
-
-#endif  // ASH_WM_MAXIMIZE_MODE_INTERNAL_INPUT_DEVICE_LIST_H_