Remove GetExtensionService from Profile.

chrome/browser/notifications/desktop_notification_service.cc

Index: chrome/browser/notifications/desktop_notification_service.cc
diff --git a/chrome/browser/notifications/desktop_notification_service.cc b/chrome/browser/notifications/desktop_notification_service.cc
index 2568fb5727ac8805f7336617e69c1ee740df6275..10f4bff590788afb7423426fdc95f12b7b84fb39 100644
--- a/chrome/browser/notifications/desktop_notification_service.cc
+++ b/chrome/browser/notifications/desktop_notification_service.cc
@@ -13,6 +13,7 @@
 #include "chrome/browser/content_settings/content_settings_provider.h"
 #include "chrome/browser/content_settings/host_content_settings_map.h"
 #include "chrome/browser/extensions/extension_service.h"
+#include "chrome/browser/extensions/extension_system.h"
 #include "chrome/browser/infobars/infobar_tab_helper.h"
 #include "chrome/browser/notifications/desktop_notification_service_factory.h"
 #include "chrome/browser/notifications/notification.h"
@@ -467,7 +468,8 @@ string16 DesktopNotificationService::DisplayNameForOrigin(
     const GURL& origin) {
   // If the source is an extension, lookup the display name.
   if (origin.SchemeIs(extensions::kExtensionScheme)) {
-    ExtensionService* extension_service = profile_->GetExtensionService();
+    ExtensionService* extension_service =
+        extensions::ExtensionSystem::Get(profile_)->extension_service();
     if (extension_service) {
       const extensions::Extension* extension =
           extension_service->extensions()->GetExtensionOrAppByURL(