diff --git a/extensions/browser/quota_service_unittest.cc b/extensions/browser/quota_service_unittest.cc
index c5b7812..a70e7f2 100644
--- a/extensions/browser/quota_service_unittest.cc
+++ b/extensions/browser/quota_service_unittest.cc
@@ -2,6 +2,9 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
+#include <stddef.h>
+
+#include "base/macros.h"
 #include "base/message_loop/message_loop.h"
 #include "base/process/process.h"
 #include "base/stl_util.h"