Consolidate serialization code in base::HistogramDeltasSerializer.

base/metrics/histogram_base.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 BASE_METRICS_HISTOGRAM_BASE_H_
 #define BASE_METRICS_HISTOGRAM_BASE_H_
 
 #include <string>
+#include <vector>
 
 #include "base/atomicops.h"
 #include "base/base_export.h"
 #include "base/basictypes.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/time/time.h"
 
 class Pickle;
 class PickleIterator;
 
@@ skipping 17 matching lines @@
   SPARSE_HISTOGRAM,
 };
 
 std::string HistogramTypeToString(HistogramType type);
 
 // Create or find existing histogram that matches the pickled info.
 // Returns NULL if the pickled data has problems.
 BASE_EXPORT_PRIVATE HistogramBase* DeserializeHistogramInfo(
     PickleIterator* iter);
 
-// Create or find existing histogram and add the samples from pickle.
-// Silently returns when seeing any data problem in the pickle.
-BASE_EXPORT void DeserializeHistogramAndAddSamples(PickleIterator* iter);
-
 ////////////////////////////////////////////////////////////////////////////////
 
 class BASE_EXPORT HistogramBase {
  public:
   typedef int Sample;                   // Used for samples.
   typedef subtle::Atomic32 Count;     // Used to count samples.
 
   static const Sample kSampleType_MAX;  // INT_MAX
 
   enum Flags {
@@ skipping 103 matching lines @@
  private:
   const std::string histogram_name_;
   int32 flags_;
 
   DISALLOW_COPY_AND_ASSIGN(HistogramBase);
 };
 
 }  // namespace base
 
 #endif  // BASE_METRICS_HISTOGRAM_BASE_H_