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

ash/mus/bridge/wm_shelf_mus.cc

 // Copyright 2016 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.
 
 #include "ash/mus/bridge/wm_shelf_mus.h"
 
 #include "ash/mus/bridge/wm_window_mus.h"
 #include "ash/mus/shelf_layout_manager.h"
 #include "services/ui/public/cpp/window.h"
 
@@ skipping 93 matching lines @@
 gfx::Rect WmShelfMus::GetIdealBounds() {
   NOTIMPLEMENTED();
   return gfx::Rect();
 }
 
 gfx::Rect WmShelfMus::GetScreenBoundsOfItemIconForWindow(WmWindow* window) {
   NOTIMPLEMENTED();
   return gfx::Rect();
 }
 
-bool WmShelfMus::ProcessGestureEvent(const ui::GestureEvent& event,
-                                     WmWindow* target_window) {
+bool WmShelfMus::ProcessGestureEvent(const ui::GestureEvent& event) {
   NOTIMPLEMENTED();
   return false;
 }
 
 void WmShelfMus::UpdateAutoHideForMouseEvent(ui::MouseEvent* event) {
   NOTIMPLEMENTED();
 }
 
 void WmShelfMus::UpdateAutoHideForGestureEvent(ui::GestureEvent* event) {
   NOTIMPLEMENTED();
@@ skipping 16 matching lines @@
   return nullptr;
 }
 
 ShelfView* WmShelfMus::GetShelfViewForTesting() {
   NOTIMPLEMENTED();
   return nullptr;
 }
 
 }  // namespace mus
 }  // namespace ash