Aura demo fix

ui/aura/demo/demo_main.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 "base/at_exit.h"
 #include "base/command_line.h"
 #include "base/i18n/icu_util.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/message_loop.h"
 #include "third_party/skia/include/core/SkXfermode.h"
 #include "ui/aura/client/stacking_client.h"
 #include "ui/aura/env.h"
 #include "ui/aura/event.h"
-#include "ui/aura/monitor_manager.h"
+#include "ui/aura/single_monitor_manager.h"
 #include "ui/aura/root_window.h"
 #include "ui/aura/window.h"
 #include "ui/aura/window_delegate.h"
 #include "ui/base/hit_test.h"
 #include "ui/base/resource/resource_bundle.h"
 #include "ui/base/ui_base_paths.h"
 #include "ui/gfx/canvas.h"
 #include "ui/gfx/compositor/test/compositor_test_support.h"
 #include "ui/gfx/rect.h"
 
@@ skipping 79 matching lines @@
   // The exit manager is in charge of calling the dtors of singleton objects.
   base::AtExitManager exit_manager;
 
   ui::RegisterPathProvider();
   icu_util::Initialize();
   ResourceBundle::InitSharedInstanceWithLocale("en-US");
 
   // Create the message-loop here before creating the root window.
   MessageLoop message_loop(MessageLoop::TYPE_UI);
   ui::CompositorTestSupport::Initialize();
-
+  aura::Env::GetInstance()->SetMonitorManager(new aura::SingleMonitorManager);
   scoped_ptr<aura::RootWindow> root_window(
       aura::MonitorManager::CreateRootWindowForPrimaryMonitor());
   scoped_ptr<DemoStackingClient> stacking_client(new DemoStackingClient(
       root_window.get()));
 
   // Create a hierarchy of test windows.
   DemoWindowDelegate window_delegate1(SK_ColorBLUE);
   aura::Window window1(&window_delegate1);
   window1.set_id(1);
   window1.Init(ui::LAYER_TEXTURED);
@@ skipping 17 matching lines @@
   window3.Show();
   window3.SetParent(&window2);
 
   root_window->ShowRootWindow();
   MessageLoopForUI::current()->Run();
 
   ui::CompositorTestSupport::Terminate();
 
   return 0;
 }