Convert //base to use std::unique_ptr

base/metrics/histogram_base.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_base.h"
 
 #include <limits.h>
 
+#include <memory>
 #include <utility>
 
 #include "base/json/json_string_value_serializer.h"
 #include "base/logging.h"
-#include "base/memory/scoped_ptr.h"
 #include "base/metrics/histogram.h"
 #include "base/metrics/histogram_samples.h"
 #include "base/metrics/sparse_histogram.h"
 #include "base/metrics/statistics_recorder.h"
 #include "base/pickle.h"
 #include "base/process/process_handle.h"
 #include "base/strings/stringprintf.h"
 #include "base/values.h"
 
 namespace base {
@@ skipping 74 matching lines @@
 }
 
 uint32_t HistogramBase::FindCorruption(const HistogramSamples& samples) const {
   // Not supported by default.
   return NO_INCONSISTENCIES;
 }
 
 void HistogramBase::WriteJSON(std::string* output) const {
   Count count;
   int64_t sum;
-  scoped_ptr<ListValue> buckets(new ListValue());
+  std::unique_ptr<ListValue> buckets(new ListValue());
   GetCountAndBucketData(&count, &sum, buckets.get());
-  scoped_ptr<DictionaryValue> parameters(new DictionaryValue());
+  std::unique_ptr<DictionaryValue> parameters(new DictionaryValue());
   GetParameters(parameters.get());
 
   JSONStringValueSerializer serializer(output);
   DictionaryValue root;
   root.SetString("name", histogram_name());
   root.SetInteger("count", count);
   root.SetDouble("sum", static_cast<double>(sum));
   root.SetInteger("flags", flags());
   root.Set("params", std::move(parameters));
   root.Set("buckets", std::move(buckets));
@@ skipping 103 matching lines @@
         report_histogram_->Add(HISTOGRAM_REPORT_FLAG_UMA_TARGETED);
       break;
 
     case HISTOGRAM_LOOKUP:
       report_histogram_->Add(HISTOGRAM_REPORT_HISTOGRAM_LOOKUP);
       break;
   }
 }
 
 }  // namespace base