Convert //base to use std::unique_ptr

base/metrics/histogram_samples.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/histogram_samples.h"
 
 #include "base/compiler_specific.h"
 #include "base/pickle.h"
 
 namespace base {
@@ skipping 123 matching lines @@
 
 bool HistogramSamples::Serialize(Pickle* pickle) const {
   if (!pickle->WriteInt64(meta_->sum))
     return false;
   if (!pickle->WriteInt(subtle::NoBarrier_Load(&meta_->redundant_count)))
     return false;
 
   HistogramBase::Sample min;
   HistogramBase::Sample max;
   HistogramBase::Count count;
-  for (scoped_ptr<SampleCountIterator> it = Iterator();
-       !it->Done();
+  for (std::unique_ptr<SampleCountIterator> it = Iterator(); !it->Done();
        it->Next()) {
     it->Get(&min, &max, &count);
     if (!pickle->WriteInt(min) ||
         !pickle->WriteInt(max) ||
         !pickle->WriteInt(count))
       return false;
   }
   return true;
 }
 
 void HistogramSamples::IncreaseSum(int64_t diff) {
   meta_->sum += diff;
 }
 
 void HistogramSamples::IncreaseRedundantCount(HistogramBase::Count diff) {
   subtle::NoBarrier_Store(&meta_->redundant_count,
       subtle::NoBarrier_Load(&meta_->redundant_count) + diff);
 }
 
 SampleCountIterator::~SampleCountIterator() {}
 
 bool SampleCountIterator::GetBucketIndex(size_t* index) const {
   DCHECK(!Done());
   return false;
 }
 
 }  // namespace base