mash: Remove ash::ShelfGestureHandler and ui::ET_GESTURE_WIN8_EDGE_SWIPE

ui/events/event_constants.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 UI_EVENTS_EVENT_CONSTANTS_H_
 #define UI_EVENTS_EVENT_CONSTANTS_H_
 
 namespace ui {
 
 // Event types. (prefixed because of a conflict with windows headers)
@@ skipping 40 matching lines @@
   ET_GESTURE_PINCH_END,
   ET_GESTURE_PINCH_UPDATE,
   ET_GESTURE_LONG_PRESS,
   ET_GESTURE_LONG_TAP,
   // A SWIPE gesture can happen at the end of a touch sequence involving one or
   // more fingers if the finger velocity was high enough when the first finger
   // was released.
   ET_GESTURE_SWIPE,
   ET_GESTURE_SHOW_PRESS,
 
-  // Sent by Win8+ metro when the user swipes from the bottom or top.
-  ET_GESTURE_WIN8_EDGE_SWIPE,
-
   // Scroll support.
   // TODO[davemoore] we need to unify these events w/ touch and gestures.
   ET_SCROLL,
   ET_SCROLL_FLING_START,
   ET_SCROLL_FLING_CANCEL,
   ET_GESTURE_TYPE_END = ET_SCROLL_FLING_CANCEL,
 
   // Sent by the system to indicate any modal type operations, such as drag and
   // drop or menus, should stop.
   ET_CANCEL_MODE,
@@ skipping 102 matching lines @@
 // Device type for gesture events.
 enum class GestureDeviceType : int {
   DEVICE_UNKNOWN = 0,
   DEVICE_TOUCHPAD,
   DEVICE_TOUCHSCREEN,
 };
 
 }  // namespace ui
 
 #endif  // UI_EVENTS_EVENT_CONSTANTS_H_