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

ui/events/gesture_detection/gesture_touch_uma_histogram.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_GESTURE_DETECTION_GESTURE_TOUCH_UMA_HISTOGRAM_H_
 #define UI_EVENTS_GESTURE_DETECTION_GESTURE_TOUCH_UMA_HISTOGRAM_H_
 
 #include "base/time/time.h"
 #include "ui/events/gesture_detection/gesture_detection_export.h"
 #include "ui/events/gesture_detection/gesture_event_data.h"
@@ skipping 31 matching lines @@
   UMA_ET_GESTURE_SWIPE_3 = 24,   // Swipe with 3 fingers
   UMA_ET_GESTURE_SWIPE_4P = 25,  // Swipe with 4+ fingers
   UMA_ET_GESTURE_SCROLL_UPDATE_2 = 26,
   UMA_ET_GESTURE_SCROLL_UPDATE_3 = 27,
   UMA_ET_GESTURE_SCROLL_UPDATE_4P = 28,
   UMA_ET_GESTURE_PINCH_UPDATE_3 = 29,
   UMA_ET_GESTURE_PINCH_UPDATE_4P = 30,
   UMA_ET_GESTURE_LONG_TAP = 31,
   UMA_ET_GESTURE_SHOW_PRESS = 32,
   UMA_ET_GESTURE_TAP_CANCEL = 33,
-  UMA_ET_GESTURE_WIN8_EDGE_SWIPE = 34,
+  UMA_ET_GESTURE_WIN8_EDGE_SWIPE = 34,  // Deprecated. Do not remove.
   UMA_ET_GESTURE_SWIPE_1 = 35,  // Swipe with 1 finger
   UMA_ET_GESTURE_TAP_UNCONFIRMED = 36,
   // NOTE: Add new event types only immediately above this line. Make sure to
   // update the UIEventType enum in tools/metrics/histograms/histograms.xml
   // accordingly.
   UMA_ET_COUNT
 };
 
 // Records some touch/gesture event specific details (e.g. what gestures are
 // targetted to which components etc.)
@@ skipping 14 matching lines @@
   gfx::Point start_touch_position_;
   // The maximum distance the first touch point travelled from its starting
   // location in pixels.
   float max_distance_from_start_squared_;
   bool is_single_finger_;
 };
 
 }  // namespace ui
 
 #endif  // UI_EVENTS_GESTURE_DETECTION_GESTURE_TOUCH_UMA_HISTOGRAM_H_