Enable MSVC warning for unused locals.

base/metrics/statistics_recorder.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 "base/metrics/statistics_recorder.h"
 
 #include "base/at_exit.h"
 #include "base/debug/leak_annotations.h"
 #include "base/json/string_escape.h"
 #include "base/logging.h"
@@ skipping 271 matching lines @@
   ranges_ = new RangesMap;
 
   if (VLOG_IS_ON(1))
     AtExitManager::RegisterCallback(&DumpHistogramsToVlog, this);
 }
 
 // static
 void StatisticsRecorder::DumpHistogramsToVlog(void* instance) {
   DCHECK(VLOG_IS_ON(1));
 
-  StatisticsRecorder* me = reinterpret_cast<StatisticsRecorder*>(instance);
   string output;
-  me->WriteGraph(std::string(), &output);
+  reinterpret_cast<StatisticsRecorder*>(instance)->WriteGraph(std::string(),
+                                                              &output);
   VLOG(1) << output;
 }
 
 StatisticsRecorder::~StatisticsRecorder() {
   DCHECK(histograms_ && ranges_ && lock_);
 
   // Clean up.
   scoped_ptr<HistogramMap> histograms_deleter;
   scoped_ptr<RangesMap> ranges_deleter;
   // We don't delete lock_ on purpose to avoid having to properly protect
@@ skipping 10 matching lines @@
 
 
 // static
 StatisticsRecorder::HistogramMap* StatisticsRecorder::histograms_ = NULL;
 // static
 StatisticsRecorder::RangesMap* StatisticsRecorder::ranges_ = NULL;
 // static
 base::Lock* StatisticsRecorder::lock_ = NULL;
 
 }  // namespace base