adds WARP support to Chromium, for Metro mode only, on Windows 8

chrome/browser/ui/aura/chrome_browser_main_extra_parts_aura.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 "chrome/browser/ui/aura/chrome_browser_main_extra_parts_aura.h"
 
 #include "base/command_line.h"
 #include "base/run_loop.h"
 #include "chrome/browser/chrome_browser_main.h"
 #include "chrome/browser/ui/aura/active_desktop_monitor.h"
 #include "chrome/browser/ui/host_desktop.h"
 #include "chrome/browser/ui/simple_message_box.h"
 #include "chrome/common/chrome_switches.h"
 #include "chrome/grit/chromium_strings.h"
 #include "chrome/grit/generated_resources.h"
 #include "ui/aura/env.h"
 #include "ui/base/l10n/l10n_util.h"
+#include "ui/base/ui_base_switches.h"
 #include "ui/gfx/screen.h"
 #include "ui/views/widget/native_widget_aura.h"
 
 #if defined(USE_X11) && !defined(OS_CHROMEOS)
 #include "base/prefs/pref_service.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/ui/libgtk2ui/gtk2_ui.h"
 #include "chrome/common/pref_names.h"
 #include "ui/aura/window.h"
 #include "ui/base/ime/input_method_initializer.h"
@@ skipping 133 matching lines @@
                            chrome::MESSAGE_BOX_TYPE_WARNING);
 
     // Avoids gpu_process_transport_factory.cc(153)] Check failed:
     // per_compositor_data_.empty() when quit is chosen.
     base::RunLoop().RunUntilIdle();
 
     exit(EXIT_FAILURE);
   }
 }
 #endif