Split ValueSerializer into separate Serializer and Deserializer classes.

chrome/browser/prefs/tracked/pref_hash_browsertest.cc

 // Copyright 2014 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 <string>
 
 #include "base/command_line.h"
 #include "base/files/file_path.h"
 #include "base/files/file_util.h"
 #include "base/json/json_file_value_serializer.h"
@@ skipping 67 matching lines @@
     if (allowed_buckets == ALLOW_NONE ||
         (allowed_buckets != ALLOW_ANY && i != allowed_buckets)) {
       EXPECT_EQ(0, count_for_id) << "Unexpected reporting_id: " << i;
     }
   }
   return sum;
 }
 
 scoped_ptr<base::DictionaryValue> ReadPrefsDictionary(
     const base::FilePath& pref_file) {
-  JSONFileValueSerializer serializer(pref_file);
-  int error_code = JSONFileValueSerializer::JSON_NO_ERROR;
+  JSONFileValueDeserializer deserializer(pref_file);
+  int error_code = JSONFileValueDeserializer::JSON_NO_ERROR;
   std::string error_str;
   scoped_ptr<base::Value> prefs(
-      serializer.Deserialize(&error_code, &error_str));
-  if (!prefs || error_code != JSONFileValueSerializer::JSON_NO_ERROR) {
+      deserializer.Deserialize(&error_code, &error_str));
+  if (!prefs || error_code != JSONFileValueDeserializer::JSON_NO_ERROR) {
     ADD_FAILURE() << "Error #" << error_code << ": " << error_str;
     return scoped_ptr<base::DictionaryValue>();
   }
   if (!prefs->IsType(base::Value::TYPE_DICTIONARY)) {
     ADD_FAILURE();
     return scoped_ptr<base::DictionaryValue>();
   }
   return scoped_ptr<base::DictionaryValue>(
       static_cast<base::DictionaryValue*>(prefs.release()));
 }
@@ skipping 814 matching lines @@
                   "Settings.TrackedPreferenceNullInitialized", ALLOW_NONE));
     EXPECT_EQ(
         0,
         GetTrackedPrefHistogramCount(
             "Settings.TrackedPreferenceMigratedLegacyDeviceId", ALLOW_NONE));
   }
 };
 
 PREF_HASH_BROWSER_TEST(PrefHashBrowserTestUntrustedAdditionToPrefsAfterWipe,
                        UntrustedAdditionToPrefsAfterWipe);