Removes worskpace 1 code. Will rename next.

ash/wm/stacking_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/wm/stacking_controller.h"
 
 #include "ash/display/display_controller.h"
 #include "ash/shell.h"
 #include "ash/shell_window_ids.h"
 #include "ash/wm/always_on_top_controller.h"
@@ skipping 125 matching lines @@
   return container;
 }
 
 // TODO(oshima): Remove this once extended desktop is on by default.
 internal::AlwaysOnTopController*
 StackingController::GetAlwaysOnTopController(aura::RootWindow* root_window) {
   internal::AlwaysOnTopController* controller =
       root_window->GetProperty(internal::kAlwaysOnTopControllerKey);
   if (!controller) {
     controller = new internal::AlwaysOnTopController;
-    controller->SetContainers(
-        root_window->GetChildById(internal::kShellWindowId_DefaultContainer),
+    controller->SetAlwaysOnTopContainer(
         root_window->GetChildById(
             internal::kShellWindowId_AlwaysOnTopContainer));
     // RootWindow owns the AlwaysOnTopController object.
     root_window->SetProperty(kAlwaysOnTopControllerKey, controller);
   }
   return controller;
 }
 
 }  // namespace internal
 }  // namespace ash