Add OVERRIDE to chrome/browser/.

chrome/browser/metrics/metrics_log_serializer.h

 // Copyright (c) 2011 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.
 
 #ifndef CHROME_BROWSER_METRICS_METRICS_LOG_SERIALIZER_H_
 #define CHROME_BROWSER_METRICS_METRICS_LOG_SERIALIZER_H_
 #pragma once
 
 #include "base/basictypes.h"
 #include "base/gtest_prod_util.h"
@@ skipping 20 matching lines @@
     // GetAsString().
     DECODE_FAIL,            // Failed to decode log.
     END_RECALL_STATUS       // Number of bins to use to create the histogram.
   };
 
   MetricsLogSerializer();
   virtual ~MetricsLogSerializer();
 
   // Implementation of MetricsLogManager::LogSerializer
   virtual void SerializeLogs(const std::vector<std::string>& logs,
-                             MetricsLogManager::LogType log_type);
+                             MetricsLogManager::LogType log_type) OVERRIDE;
   virtual void DeserializeLogs(MetricsLogManager::LogType log_type,
-                               std::vector<std::string>* logs);
+                               std::vector<std::string>* logs) OVERRIDE;
 
  private:
   // Encodes the textual log data from |local_list| and writes it to the given
   // pref list, along with list size and checksum.
   static void WriteLogsToPrefList(const std::vector<std::string>& local_list,
                                   const size_t kMaxLocalListSize,
                                   base::ListValue* list);
 
   // Decodes and verifies the textual log data from |list|, populating
   // |local_list| and returning a status code.
   static LogReadStatus ReadLogsFromPrefList(
       const base::ListValue& list,
       std::vector<std::string>* local_list);
 
   FRIEND_TEST_ALL_PREFIXES(MetricsLogSerializerTest, EmptyLogList);
   FRIEND_TEST_ALL_PREFIXES(MetricsLogSerializerTest, SingleElementLogList);
   FRIEND_TEST_ALL_PREFIXES(MetricsLogSerializerTest, OverLimitLogList);
   FRIEND_TEST_ALL_PREFIXES(MetricsLogSerializerTest, SmallRecoveredListSize);
   FRIEND_TEST_ALL_PREFIXES(MetricsLogSerializerTest, RemoveSizeFromLogList);
   FRIEND_TEST_ALL_PREFIXES(MetricsLogSerializerTest, CorruptSizeOfLogList);
   FRIEND_TEST_ALL_PREFIXES(MetricsLogSerializerTest, CorruptChecksumOfLogList);
 
   DISALLOW_COPY_AND_ASSIGN(MetricsLogSerializer);
 };
 
 #endif  // CHROME_BROWSER_METRICS_METRICS_LOG_SERIALIZER_H_