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

chrome/browser/managed_mode/managed_user_service.cc

Index: chrome/browser/managed_mode/managed_user_service.cc
diff --git a/chrome/browser/managed_mode/managed_user_service.cc b/chrome/browser/managed_mode/managed_user_service.cc
index 8a06b7e88a659a209b6a76d23f97d7d38cbcb65f..d407d6eecf28269f409dfd3de72b7bda29088163 100644
--- a/chrome/browser/managed_mode/managed_user_service.cc
+++ b/chrome/browser/managed_mode/managed_user_service.cc
@@ -318,7 +318,7 @@ ScopedVector<ManagedModeSiteList> ManagedUserService::GetActiveSiteLists() {
   const ExtensionSet* extensions = extension_service->extensions();
   for (ExtensionSet::const_iterator it = extensions->begin();
        it != extensions->end(); ++it) {
-    const extensions::Extension* extension = *it;
+    const extensions::Extension* extension = it->get();
     if (!extension_service->IsExtensionEnabled(extension->id()))
       continue;