Profile shouldn't own DesktopNotificationService.

content/browser/tab_contents/tab_contents.cc

Index: content/browser/tab_contents/tab_contents.cc
diff --git a/content/browser/tab_contents/tab_contents.cc b/content/browser/tab_contents/tab_contents.cc
index 7a1e82b9985e6deb4799830d1b6f2867909015ca..ad1a55cfbf45b7ea33315bf6963abcb5960220b4 100644
--- a/content/browser/tab_contents/tab_contents.cc
+++ b/content/browser/tab_contents/tab_contents.cc
@@ -36,6 +36,7 @@
 #include "chrome/browser/metrics/metric_event_duration_details.h"
 #include "chrome/browser/metrics/user_metrics.h"
 #include "chrome/browser/notifications/desktop_notification_service.h"
+#include "chrome/browser/notifications/desktop_notification_service_factory.h"
 #include "chrome/browser/omnibox_search_hint.h"
 #include "chrome/browser/pdf_unsupported_feature.h"
 #include "chrome/browser/platform_util.h"
@@ -2352,7 +2353,7 @@ void TabContents::WorkerCrashed() {
 void TabContents::RequestDesktopNotificationPermission(
     const GURL& source_origin, int callback_context) {
   DesktopNotificationService* service =
-      profile()->GetDesktopNotificationService();
+      DesktopNotificationServiceFactory::GetForProfile(profile());
   service->RequestPermission(
       source_origin, GetRenderProcessHost()->id(),
       render_view_host()->routing_id(), callback_context, this);