Move processing out of AcceleratorDelegate

ash/mus/bridge/wm_window_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_window_mus.h"
 
 #include "ash/common/wm/container_finder.h"
 #include "ash/common/wm/window_state.h"
 #include "ash/common/wm_layout_manager.h"
 #include "ash/common/wm_window_observer.h"
@@ skipping 334 matching lines @@
 }
 
 const wm::WindowState* WmWindowMus::GetWindowState() const {
   return window_state_.get();
 }
 
 WmWindow* WmWindowMus::GetToplevelWindow() {
   return WmShellMus::GetToplevelAncestor(window_);
 }
 
+WmWindow* WmWindowMus::GetToplevelWindowForFocus() {
+  // TODO(sky): resolve if we really need two notions of top-level. In the mus
+  // world they are the same.
+  return WmShellMus::GetToplevelAncestor(window_);
+}
+
 void WmWindowMus::SetParentUsingContext(WmWindow* context,
                                         const gfx::Rect& screen_bounds) {
   wm::GetDefaultParent(context, this, screen_bounds)->AddChild(this);
 }
 
 void WmWindowMus::AddChild(WmWindow* window) {
   window_->AddChild(GetMusWindow(window));
 }
 
 WmWindow* WmWindowMus::GetParent() {
@@ skipping 423 matching lines @@
 void WmWindowMus::OnWindowDestroying(::ui::Window* window) {
   FOR_EACH_OBSERVER(WmWindowObserver, observers_, OnWindowDestroying(this));
 }
 
 void WmWindowMus::OnWindowDestroyed(::ui::Window* window) {
   FOR_EACH_OBSERVER(WmWindowObserver, observers_, OnWindowDestroyed(this));
 }
 
 }  // namespace mus
 }  // namespace ash