Switch to standard integer types in chrome/.

chrome/utility/safe_browsing/mac/dmg_test_utils.cc

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/utility/safe_browsing/mac/dmg_test_utils.h"
 
+#include <stddef.h>
+
 #include "base/files/file_path.h"
 #include "base/logging.h"
 #include "base/path_service.h"
 #include "chrome/common/chrome_paths.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace safe_browsing {
 namespace dmg {
 namespace test {
 
@@ skipping 21 matching lines @@
 
     data->insert(data->end(), buffer, &buffer[bytes_read]);
   } while (bytes_read != 0);
 
   return true;
 }
 
 }  // namespace test
 }  // namespace dmg
 }  // namespace safe_browsing