Decouple IsMetroProcess() calls, introducing IsSingleWindowMetroMode().

chrome/browser/notifications/desktop_notification_service_win.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/notifications/desktop_notification_service.h"
 
 #include "base/logging.h"
 #include "base/win/metro.h"
 #include "chrome/browser/notifications/notification.h"
 #include "chrome/browser/notifications/notification_object_proxy.h"
 #include "chrome/browser/notifications/notification_ui_manager.h"
 #include "chrome/browser/notifications/notification_ui_manager.h"
+#include "win8/util/win8_util.h"
 
 typedef void (*MetroDisplayNotification)(
     const char* origin_url, const char* icon_url, const wchar_t* title,
     const wchar_t* body, const wchar_t* display_source,
     const char* notification_id);
 
 typedef bool (*MetroCancelNotification)(const char* notification_id);
 
 bool DesktopNotificationService::CancelDesktopNotification(
     int process_id, int route_id, int notification_id) {
   scoped_refptr<NotificationObjectProxy> proxy(
       new NotificationObjectProxy(process_id, route_id, notification_id,
                                   false));
-  if (base::win::IsMetroProcess()) {
+  if (win8::IsSingleWindowMetroMode()) {
     MetroCancelNotification cancel_metro_notification =
         reinterpret_cast<MetroCancelNotification>(GetProcAddress(
             base::win::GetMetroModule(), "CancelNotification"));
     DCHECK(cancel_metro_notification);
     if (cancel_metro_notification(proxy->id().c_str()))
       return true;
   }
   return GetUIManager()->CancelById(proxy->id());
 }
 
 void DesktopNotificationService::ShowNotification(
     const Notification& notification) {
-  if (base::win::IsMetroProcess()) {
+  if (win8::IsSingleWindowMetroMode()) {
     MetroDisplayNotification display_metro_notification =
         reinterpret_cast<MetroDisplayNotification>(GetProcAddress(
             base::win::GetMetroModule(), "DisplayNotification"));
     DCHECK(display_metro_notification);
     if (!notification.is_html()) {
       display_metro_notification(notification.origin_url().spec().c_str(),
                                  notification.content_url().spec().c_str(),
                                  notification.title().c_str(),
                                  notification.body().c_str(),
                                  notification.display_source().c_str(),
                                  notification.notification_id().c_str());
       return;
     } else {
       NOTREACHED() << "We don't support HTML notifications in Windows 8 metro";
     }
   }
   GetUIManager()->Add(notification, profile_);
 }