mash: Convert StatusAreaWidgetDelegate to wm common types

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 "components/mus/public/cpp/window.h"
 
@@ skipping 84 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) {
+  NOTIMPLEMENTED();
+  return false;
+}
+
 void WmShelfMus::UpdateAutoHideForMouseEvent(ui::MouseEvent* event) {
   NOTIMPLEMENTED();
 }
 
 void WmShelfMus::UpdateAutoHideForGestureEvent(ui::GestureEvent* event) {
   NOTIMPLEMENTED();
 }
 
 void WmShelfMus::AddObserver(WmShelfObserver* observer) {
   observers_.AddObserver(observer);
 }
 
 void WmShelfMus::RemoveObserver(WmShelfObserver* observer) {
   observers_.RemoveObserver(observer);
 }
 
 void WmShelfMus::SetKeyboardBoundsForTesting(const gfx::Rect& bounds) {
   NOTIMPLEMENTED();
 }
 
 }  // namespace mus
 }  // namespace ash