Eliminate Shell::RootWindowList in favor of aura::Window::Windows.

ash/desktop_background/desktop_background_controller.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/desktop_background/desktop_background_controller.h"
 
 #include "ash/ash_switches.h"
 #include "ash/desktop_background/desktop_background_controller_observer.h"
 #include "ash/desktop_background/desktop_background_view.h"
 #include "ash/desktop_background/desktop_background_widget_controller.h"
@@ skipping 344 matching lines @@
   FOR_EACH_OBSERVER(DesktopBackgroundControllerObserver, observers_,
                     OnWallpaperDataChanged());
 
   SetDesktopBackgroundImageMode();
 
   DCHECK(loader.get() == wallpaper_loader_.get());
   wallpaper_loader_ = NULL;
 }
 
 void DesktopBackgroundController::InstallDesktopController(
-    aura::RootWindow* root_window) {
+    aura::Window* root_window) {
   internal::DesktopBackgroundWidgetController* component = NULL;
   int container_id = GetBackgroundContainerId(locked_);
 
   switch (desktop_background_mode_) {
     case BACKGROUND_IMAGE: {
       views::Widget* widget = internal::CreateDesktopBackground(root_window,
                                                                 container_id);
       component = new internal::DesktopBackgroundWidgetController(widget);
       break;
     }
     case BACKGROUND_NONE:
       NOTREACHED();
       return;
   }
   internal::GetRootWindowController(root_window)->
       SetAnimatingWallpaperController(
           new internal::AnimatingDesktopController(component));
 
   component->StartAnimating(internal::GetRootWindowController(root_window));
 }
 
 void DesktopBackgroundController::InstallDesktopControllerForAllWindows() {
-  Shell::RootWindowList root_windows = Shell::GetAllRootWindows();
-  for (Shell::RootWindowList::iterator iter = root_windows.begin();
+  aura::Window::Windows root_windows = Shell::GetAllRootWindows();
+  for (aura::Window::Windows::iterator iter = root_windows.begin();
        iter != root_windows.end(); ++iter) {
     InstallDesktopController(*iter);
   }
   current_max_display_size_ = GetMaxDisplaySizeInNative();
 }
 
 bool DesktopBackgroundController::ReparentBackgroundWidgets(int src_container,
                                                             int dst_container) {
   bool moved = false;
   Shell::RootWindowControllerList controllers =
@@ skipping 61 matching lines @@
         iter->rotation() == gfx::Display::ROTATE_270) {
       size_in_pixel = gfx::Size(size_in_pixel.height(), size_in_pixel.width());
     }
     width = std::max(size_in_pixel.width(), width);
     height = std::max(size_in_pixel.height(), height);
   }
   return gfx::Size(width, height);
 }
 
 }  // namespace ash