ash: Remove wm::GetRootWindowController.

ash/wm/window_util.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/window_util.h"
 
 #include "ash/shell.h"
 #include "ash/wm/activation_controller.h"
 #include "ash/wm/window_properties.h"
 #include "ui/aura/client/activation_client.h"
@@ skipping 41 matching lines @@
 
 bool CanActivateWindow(aura::Window* window) {
   DCHECK(window);
   if (!window->GetRootWindow())
     return false;
   aura::client::ActivationClient* client =
       aura::client::GetActivationClient(window->GetRootWindow());
   return client && client->CanActivateWindow(window);
 }
 
-internal::RootWindowController* GetRootWindowController(
-    aura::RootWindow* root_window) {
-  return root_window->GetProperty(internal::kRootWindowControllerKey);
-}
-
 bool IsWindowNormal(aura::Window* window) {
   return window->GetProperty(aura::client::kShowStateKey) ==
           ui::SHOW_STATE_NORMAL ||
       window->GetProperty(aura::client::kShowStateKey) ==
           ui::SHOW_STATE_DEFAULT;
 }
 
 bool IsWindowMaximized(aura::Window* window) {
   return window->GetProperty(aura::client::kShowStateKey) ==
       ui::SHOW_STATE_MAXIMIZED;
@@ skipping 22 matching lines @@
 }
 
 void CenterWindow(aura::Window* window) {
   const gfx::Display display = gfx::Screen::GetDisplayNearestWindow(window);
   gfx::Rect center = display.work_area().Center(window->bounds().size());
   window->SetBounds(center);
 }
 
 }  // namespace wm
 }  // namespace ash