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

chrome/common/web_apps_unittest.cc

-// Copyright (c) 2011 The Chromium Authors. All rights reserved.
+// 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/web_apps.h"
 
 #include "base/file_path.h"
 #include "base/file_util.h"
-#include "base/json/json_value_serializer.h"
+#include "base/json/json_file_value_serializer.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/path_service.h"
 #include "base/utf_string_conversions.h"
 #include "base/values.h"
 #include "chrome/common/chrome_paths.h"
 #include "chrome/common/json_schema_validator.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace {
 
@@ skipping 162 matching lines @@
         ASSERT_EQ(data[i].width1, sizes[0].width());
         ASSERT_EQ(data[i].height1, sizes[0].height());
       }
       if (sizes.size() > 1) {
         ASSERT_EQ(data[i].width2, sizes[1].width());
         ASSERT_EQ(data[i].height2, sizes[1].height());
       }
     }
   }
 }