[mus+ash] Removes WmWindow from ash/shelf and ash/shell

ash/shell.cc

 // Copyright (c) 2012 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/shell.h"
 
 #include <algorithm>
 #include <string>
 #include <utility>
 
@@ skipping 511 matching lines @@
   for (auto& observer : shell_observers_)
     observer.OnPinnedStateChanged(pinned_window);
 }
 
 void Shell::NotifyVirtualKeyboardActivated(bool activated,
                                            aura::Window* root_window) {
   for (auto& observer : shell_observers_)
     observer.OnVirtualKeyboardStateChanged(activated, root_window);
 }
 
-void Shell::NotifyShelfCreatedForRootWindow(WmWindow* root_window) {
+void Shell::NotifyShelfCreatedForRootWindow(aura::Window* root_window) {
   for (auto& observer : shell_observers_)
     observer.OnShelfCreatedForRootWindow(root_window);
 }
 
-void Shell::NotifyShelfAlignmentChanged(WmWindow* root_window) {
+void Shell::NotifyShelfAlignmentChanged(aura::Window* root_window) {
   for (auto& observer : shell_observers_)
     observer.OnShelfAlignmentChanged(root_window);
 }
 
-void Shell::NotifyShelfAutoHideBehaviorChanged(WmWindow* root_window) {
+void Shell::NotifyShelfAutoHideBehaviorChanged(aura::Window* root_window) {
   for (auto& observer : shell_observers_)
     observer.OnShelfAutoHideBehaviorChanged(root_window);
 }
 
 // static
 void Shell::SetIsBrowserProcessWithMash() {
   g_is_browser_process_with_mash = true;
 }
 
 ////////////////////////////////////////////////////////////////////////////////
@@ skipping 715 matching lines @@
 void Shell::OnPrefServiceInitialized(
     std::unique_ptr<::PrefService> pref_service) {
   if (!instance_)
     return;
   // |pref_service_| is null if can't connect to Chrome (as happens when
   // running mash outside of chrome --mash and chrome isn't built).
   pref_service_ = std::move(pref_service);
 }
 
 }  // namespace ash