Convert //base to use std::unique_ptr

base/metrics/sample_vector.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/sample_vector.h"
 
 #include "base/logging.h"
 #include "base/metrics/bucket_ranges.h"
 
 namespace base {
@@ skipping 47 matching lines @@
     count += subtle::NoBarrier_Load(&counts_[i]);
   }
   return count;
 }
 
 Count SampleVector::GetCountAtIndex(size_t bucket_index) const {
   DCHECK(bucket_index < counts_size_);
   return subtle::NoBarrier_Load(&counts_[bucket_index]);
 }
 
-scoped_ptr<SampleCountIterator> SampleVector::Iterator() const {
-  return scoped_ptr<SampleCountIterator>(
+std::unique_ptr<SampleCountIterator> SampleVector::Iterator() const {
+  return std::unique_ptr<SampleCountIterator>(
       new SampleVectorIterator(counts_, counts_size_, bucket_ranges_));
 }
 
 bool SampleVector::AddSubtractImpl(SampleCountIterator* iter,
                                    HistogramSamples::Operator op) {
   HistogramBase::Sample min;
   HistogramBase::Sample max;
   HistogramBase::Count count;
 
   // Go through the iterator and add the counts into correct bucket.
@@ skipping 107 matching lines @@
     return;
 
   while (index_ < counts_size_) {
     if (subtle::NoBarrier_Load(&counts_[index_]) != 0)
       return;
     index_++;
   }
 }
 
 }  // namespace base