Convert //base to use std::unique_ptr

base/metrics/histogram_snapshot_manager.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_snapshot_manager.h"
 
-#include "base/memory/scoped_ptr.h"
+#include <memory>
+
 #include "base/metrics/histogram_flattener.h"
 #include "base/metrics/histogram_samples.h"
 #include "base/metrics/statistics_recorder.h"
 #include "base/stl_util.h"
 
 namespace base {
 
 HistogramSnapshotManager::HistogramSnapshotManager(
     HistogramFlattener* histogram_flattener)
     : preparing_deltas_(false),
@@ skipping 18 matching lines @@
             HistogramBase::NEW_INCONSISTENCY_FOUND));
   }
 #endif
 }
 
 void HistogramSnapshotManager::PrepareDelta(HistogramBase* histogram) {
   PrepareSamples(histogram, histogram->SnapshotDelta());
 }
 
 void HistogramSnapshotManager::PrepareDeltaTakingOwnership(
-    scoped_ptr<HistogramBase> histogram) {
+    std::unique_ptr<HistogramBase> histogram) {
   PrepareSamples(histogram.get(), histogram->SnapshotDelta());
   owned_histograms_.push_back(std::move(histogram));
 }
 
 void HistogramSnapshotManager::PrepareAbsolute(const HistogramBase* histogram) {
   PrepareSamples(histogram, histogram->SnapshotSamples());
 }
 
 void HistogramSnapshotManager::PrepareAbsoluteTakingOwnership(
-    scoped_ptr<const HistogramBase> histogram) {
+    std::unique_ptr<const HistogramBase> histogram) {
   PrepareSamples(histogram.get(), histogram->SnapshotSamples());
   owned_histograms_.push_back(std::move(histogram));
 }
 
 void HistogramSnapshotManager::FinishDeltas() {
   DCHECK(preparing_deltas_);
 
   // Iterate over all known histograms to see what should be recorded.
   for (auto& hash_and_info : known_histograms_) {
     SampleInfo* sample_info = &hash_and_info.second;
@@ skipping 22 matching lines @@
     // is only required to keep it alive until FinishDeltas() completes.
     sample_info->histogram = nullptr;
   }
 
   owned_histograms_.clear();
   preparing_deltas_ = false;
 }
 
 void HistogramSnapshotManager::PrepareSamples(
     const HistogramBase* histogram,
-    scoped_ptr<HistogramSamples> samples) {
+    std::unique_ptr<HistogramSamples> samples) {
   DCHECK(histogram_flattener_);
 
   // Get information known about this histogram.
   SampleInfo* sample_info = &known_histograms_[histogram->name_hash()];
   if (sample_info->histogram) {
     DCHECK_EQ(sample_info->histogram->histogram_name(),
               histogram->histogram_name()) << "hash collision";
   } else {
     // First time this histogram has been seen; datafill.
     sample_info->histogram = histogram;
@@ skipping 48 matching lines @@
 
   histogram_flattener_->InconsistencyDetectedInLoggedCount(discrepancy);
   if (discrepancy > Histogram::kCommonRaceBasedCountMismatch) {
     // Fix logged_samples.
     logged_samples->Subtract(*logged_samples);
     logged_samples->Add(new_snapshot);
   }
 }
 
 }  // namespace base