Call scoped_refptr<T>::get() rather than relying on implicit "operator T*"

chrome/browser/notifications/message_center_settings_controller.cc

Index: chrome/browser/notifications/message_center_settings_controller.cc
diff --git a/chrome/browser/notifications/message_center_settings_controller.cc b/chrome/browser/notifications/message_center_settings_controller.cc
index ea52be7bec36d4f5ca40f02799aa90a42270b2f3..924c6699652db4f41d72bf8538e9f423b7965033 100644
--- a/chrome/browser/notifications/message_center_settings_controller.cc
+++ b/chrome/browser/notifications/message_center_settings_controller.cc
@@ -88,9 +88,9 @@ void MessageCenterSettingsController::GetNotifierList(
       profile, extension_misc::EXTENSION_ICON_SMALL, this));
   for (ExtensionSet::const_iterator iter = extension_set->begin();
        iter != extension_set->end(); ++iter) {
-    const extensions::Extension* extension = *iter;
+    const extensions::Extension* extension = iter->get();
     if (!extension->HasAPIPermission(
-      extensions::APIPermission::kNotification)) {
+            extensions::APIPermission::kNotification)) {
       continue;
     }