Connect SparseHistogram with the rest of stats system

net/disk_cache/stats_histogram.h

 // 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.
 
 #ifndef NET_DISK_CACHE_STATS_HISTOGRAM_H_
 #define NET_DISK_CACHE_STATS_HISTOGRAM_H_
 
 #include <string>
 
 #include "base/memory/scoped_ptr.h"
@@ skipping 25 matching lines @@
                  const base::BucketRanges* ranges,
                  const Stats* stats);
   virtual ~StatsHistogram();
 
   static void InitializeBucketRanges(const Stats* stats,
                                      base::BucketRanges* ranges);
   static StatsHistogram* FactoryGet(const std::string& name,
                                     const Stats* stats);
 
   virtual scoped_ptr<base::HistogramSamples> SnapshotSamples() const OVERRIDE;
-  virtual Inconsistencies FindCorruption(
+  virtual int FindCorruption(
       const base::HistogramSamples& samples) const OVERRIDE;
 
  private:
   const Stats* stats_;
   DISALLOW_COPY_AND_ASSIGN(StatsHistogram);
 };
 
 }  // namespace disk_cache
 
 #endif  // NET_DISK_CACHE_STATS_HISTOGRAM_H_