Cast: Reduce the size of stats

media/cast/logging/stats_event_subscriber.h

 // 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.
 
 #ifndef MEDIA_CAST_LOGGING_STATS_EVENT_SUBSCRIBER_H_
 #define MEDIA_CAST_LOGGING_STATS_EVENT_SUBSCRIBER_H_
 
 #include "base/gtest_prod_util.h"
 #include "base/memory/linked_ptr.h"
 #include "base/memory/scoped_ptr.h"
@@ skipping 79 matching lines @@
     // |min| must be less than |max|.
     // |width| must divide |max - min| evenly.
     SimpleHistogram(int64 min, int64 max, int64 width);
 
     ~SimpleHistogram();
 
     void Add(int64 sample);
 
     void Reset();
 
-    scoped_ptr<base::ListValue> GetHistogram() const;
+    scoped_ptr<base::DictionaryValue> GetHistogram() const;
 
    private:
     int64 min_;
     int64 max_;
     int64 width_;
     std::vector<int> buckets_;
   };
 
   enum CastStat {
     // Capture frame rate.
@@ skipping 143 matching lines @@
   HistogramMap histograms_;
 
   base::ThreadChecker thread_checker_;
   DISALLOW_COPY_AND_ASSIGN(StatsEventSubscriber);
 };
 
 }  // namespace cast
 }  // namespace media
 
 #endif  // MEDIA_CAST_LOGGING_STATS_EVENT_SUBSCRIBER_H_