Break two classes defined in json_value_serializer.cc, .h into separate files.

chrome/common/extensions/extension_l10n_util.cc

 // Copyright (c) 2012 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/common/extensions/extension_l10n_util.h"
 
 #include <algorithm>
 #include <set>
 #include <string>
 #include <vector>
 
 #include "base/file_util.h"
-#include "base/json/json_value_serializer.h"
+#include "base/json/json_file_value_serializer.h"
 #include "base/logging.h"
 #include "base/memory/linked_ptr.h"
 #include "base/stringprintf.h"
 #include "base/values.h"
 #include "chrome/common/extensions/extension.h"
 #include "chrome/common/extensions/extension_constants.h"
 #include "chrome/common/extensions/extension_file_util.h"
 #include "chrome/common/extensions/extension_message_bundle.h"
 #include "chrome/common/url_constants.h"
 #include "ui/base/l10n/l10n_util.h"
@@ skipping 291 matching lines @@
   if (std::find(subdir.begin(), subdir.end(), '.') != subdir.end())
     return true;
 
   if (all_locales.find(subdir) == all_locales.end())
     return true;
 
   return false;
 }
 
 }  // namespace extension_l10n_util