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

ash/display/display_controller.h

 // 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.
 
 #ifndef ASH_DISPLAY_DISPLAY_CONTROLLER_H_
 #define ASH_DISPLAY_DISPLAY_CONTROLLER_H_
 
 #include <map>
 #include <vector>
 
 #include "ash/ash_export.h"
 #include "ash/display/display_manager.h"
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
 #include "base/gtest_prod_util.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/observer_list.h"
 #include "base/time/time.h"
 #include "ui/aura/root_window_observer.h"
+#include "ui/aura/window.h"
 #include "ui/gfx/display_observer.h"
 #include "ui/gfx/point.h"
 
 namespace aura {
 class Display;
 class RootWindow;
 }
 
 namespace base {
 class Value;
@@ skipping 81 matching lines @@
 
   // Sets primary display. This re-assigns the current root
   // window to given |display|.
   void SetPrimaryDisplay(const gfx::Display& display);
 
   // Closes all child windows in the all root windows.
   void CloseChildWindows();
 
   // Returns all root windows. In non extended desktop mode, this
   // returns the primary root window only.
-  std::vector<aura::RootWindow*> GetAllRootWindows();
+  aura::Window::Windows GetAllRootWindows();
 
   // Returns all oot window controllers. In non extended desktop
   // mode, this return a RootWindowController for the primary root window only.
   std::vector<internal::RootWindowController*> GetAllRootWindowControllers();
 
   // Gets/Sets/Clears the overscan insets for the specified |display_id|. See
   // display_manager.h for the details.
   gfx::Insets GetOverscanInsets(int64 display_id) const;
   void SetOverscanInsets(int64 display_id, const gfx::Insets& insets_in_dip);
 
@@ skipping 86 matching lines @@
   // restore the cursor location when display configuration
   // changed.
   gfx::Point cursor_location_in_native_coords_for_restore_;
 
   DISALLOW_COPY_AND_ASSIGN(DisplayController);
 };
 
 }  // namespace ash
 
 #endif  // ASH_DISPLAY_DISPLAY_CONTROLLER_H_