Renames WmWindowUserData and converts to using aura

ash/wm/ash_focus_rules.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/wm/ash_focus_rules.h"
 
 #include "ash/common/wm/container_finder.h"
 #include "ash/common/wm/focus_rules.h"
 #include "ash/common/wm/mru_window_tracker.h"
 #include "ash/common/wm/window_state.h"
@@ skipping 102 matching lines @@
 }
 
 ////////////////////////////////////////////////////////////////////////////////
 // AshFocusRules, private:
 
 aura::Window* AshFocusRules::GetTopmostWindowToActivateForContainerIndex(
     int index,
     aura::Window* ignore) const {
   aura::Window* window = nullptr;
   aura::Window* root = ignore ? ignore->GetRootWindow() : nullptr;
-  WmWindow::Windows containers = GetContainersFromAllRootWindows(
-      kActivatableShellWindowIds[index], WmWindow::Get(root));
-  for (WmWindow* container : containers) {
-    window = GetTopmostWindowToActivateInContainer(
-        WmWindow::GetAuraWindow(container), ignore);
+  aura::Window::Windows containers =
+      GetContainersFromAllRootWindows(kActivatableShellWindowIds[index], root);
+  for (aura::Window* container : containers) {
+    window = GetTopmostWindowToActivateInContainer(container, ignore);
     if (window)
       return window;
   }
   return window;
 }
 
 aura::Window* AshFocusRules::GetTopmostWindowToActivateInContainer(
     aura::Window* container,
     aura::Window* ignore) const {
   for (aura::Window::Windows::const_reverse_iterator i =
            container->children().rbegin();
        i != container->children().rend(); ++i) {
     WindowState* window_state = GetWindowState(*i);
     if (*i != ignore && window_state->CanActivate() &&
         !window_state->IsMinimized())
       return *i;
   }
   return NULL;
 }
 
 }  // namespace wm
 }  // namespace ash