ui: Use base::MessageLoop.

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"
@@ skipping 91 matching lines @@
  private:
   aura::RootWindow* root_window_;
 
   scoped_ptr<aura::client::DefaultCaptureClient> capture_client_;
 
   DISALLOW_COPY_AND_ASSIGN(DemoStackingClient);
 };
 
 int DemoMain() {
   // Create the message-loop here before creating the root window.
-  MessageLoop message_loop(MessageLoop::TYPE_UI);
+  base::MessageLoop message_loop(base::MessageLoop::TYPE_UI);
   ui::CompositorTestSupport::Initialize();
   aura::Env::GetInstance();
   scoped_ptr<aura::TestScreen> test_screen(aura::TestScreen::Create());
   gfx::Screen::SetScreenInstance(gfx::SCREEN_TYPE_NATIVE, test_screen.get());
   scoped_ptr<aura::RootWindow> root_window(
       test_screen->CreateRootWindowForPrimaryDisplay());
   scoped_ptr<DemoStackingClient> stacking_client(new DemoStackingClient(
       root_window.get()));
 
   // Create a hierarchy of test windows.
@@ skipping 15 matching lines @@
 
   DemoWindowDelegate window_delegate3(SK_ColorGREEN);
   aura::Window window3(&window_delegate3);
   window3.set_id(3);
   window3.Init(ui::LAYER_TEXTURED);
   window3.SetBounds(gfx::Rect(10, 10, 50, 50));
   window3.Show();
   window2.AddChild(&window3);
 
   root_window->ShowRootWindow();
-  MessageLoopForUI::current()->Run();
+  base::MessageLoopForUI::current()->Run();
 
   ui::CompositorTestSupport::Terminate();
 
   return 0;
 }
 
 }  // namespace
 
 int main(int argc, char** argv) {
   CommandLine::Init(argc, argv);
 
   // 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", NULL);
 
   return DemoMain();
 }