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

chrome/installer/util/master_preferences_unittest.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.
 //
 // Unit tests for master preferences related methods.
 
 #include "base/file_util.h"
-#include "base/json/json_value_serializer.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/path_service.h"
 #include "base/stringprintf.h"
+#include "base/values.h"
 #include "chrome/common/chrome_paths.h"
 #include "chrome/installer/util/master_preferences.h"
 #include "chrome/installer/util/master_preferences_constants.h"
 #include "chrome/installer/util/util_constants.h"
 #include "googleurl/src/gurl.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace {
 class MasterPreferencesTest : public testing::Test {
  protected:
@@ skipping 321 matching lines @@
 
   EXPECT_TRUE(pref_cf.is_multi_install());
   EXPECT_FALSE(pref_cf.install_chrome());
   EXPECT_TRUE(pref_cf.install_chrome_frame());
 
   EXPECT_TRUE(pref_chrome_cf.is_multi_install());
   EXPECT_TRUE(pref_chrome_cf.install_chrome());
   EXPECT_TRUE(pref_chrome_cf.install_chrome_frame());
 }