Get AcceleratorControllerTest working with mash

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 546 matching lines @@
 
 void WmWindowMus::ReleaseCapture() {
   window_->ReleaseCapture();
 }
 
 bool WmWindowMus::HasRestoreBounds() const {
   return restore_bounds_in_screen_.get() != nullptr;
 }
 
 bool WmWindowMus::CanMaximize() const {
-  return widget_ ? widget_->widget_delegate()->CanMaximize() : false;
+  return (GetResizeBehavior(window_) &
+          ::ui::mojom::kResizeBehaviorCanMaximize) != 0;
 }
 
 bool WmWindowMus::CanMinimize() const {
-  return widget_ ? widget_->widget_delegate()->CanMinimize() : false;
+  return (GetResizeBehavior(window_) &
+          ::ui::mojom::kResizeBehaviorCanMinimize) != 0;
 }
 
 bool WmWindowMus::CanResize() const {
-  return widget_ ? widget_->widget_delegate()->CanResize() : false;
+  return window_ &&
+         (GetResizeBehavior(window_) & ::ui::mojom::kResizeBehaviorCanResize) !=
+             0;
 }
 
 bool WmWindowMus::CanActivate() const {
   // TODO(sky): this isn't quite right. Should key off CanFocus(), which is not
   // replicated.
   return widget_ != nullptr;
 }
 
 void WmWindowMus::StackChildAtTop(WmWindow* child) {
   GetMusWindow(child)->MoveToFront();
@@ skipping 232 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