Convert //base to use std::unique_ptr

base/metrics/histogram.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.
 
 // Histogram is an object that aggregates statistics, and can summarize them in
 // various forms, including ASCII graphical, HTML, and numerically (as a
 // vector of numbers corresponding to each of the aggregating buckets).
 
 // It supports calls to accumulate either time intervals (which are processed
 // as integral number of milliseconds), or arbitrary integral units.
@@ skipping 52 matching lines @@
 // and relatively fast, set of counters.  To avoid races at shutdown, the static
 // pointer is NOT deleted, and we leak the histograms at process termination.
 
 #ifndef BASE_METRICS_HISTOGRAM_H_
 #define BASE_METRICS_HISTOGRAM_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <map>
+#include <memory>
 #include <string>
 #include <vector>
 
 #include "base/base_export.h"
 #include "base/compiler_specific.h"
 #include "base/gtest_prod_util.h"
 #include "base/logging.h"
 #include "base/macros.h"
-#include "base/memory/scoped_ptr.h"
 #include "base/metrics/bucket_ranges.h"
 #include "base/metrics/histogram_base.h"
 // TODO(asvitkine): Migrate callers to to include this directly and remove this.
 #include "base/metrics/histogram_macros.h"
 #include "base/metrics/histogram_samples.h"
 #include "base/time/time.h"
 
 namespace base {
 
 class BooleanHistogram;
@@ skipping 43 matching lines @@
                                    Sample maximum,
                                    uint32_t bucket_count,
                                    int32_t flags);
   static HistogramBase* FactoryTimeGet(const char* name,
                                        base::TimeDelta minimum,
                                        base::TimeDelta maximum,
                                        uint32_t bucket_count,
                                        int32_t flags);
 
   // Create a histogram using data in persistent storage.
-  static scoped_ptr<HistogramBase> PersistentCreate(
+  static std::unique_ptr<HistogramBase> PersistentCreate(
       const std::string& name,
       Sample minimum,
       Sample maximum,
       const BucketRanges* ranges,
       HistogramBase::AtomicCount* counts,
       HistogramBase::AtomicCount* logged_counts,
       uint32_t counts_size,
       HistogramSamples::Metadata* meta,
       HistogramSamples::Metadata* logged_meta);
 
@@ skipping 39 matching lines @@
                                            uint32_t* bucket_count);
 
   // HistogramBase implementation:
   uint64_t name_hash() const override;
   HistogramType GetHistogramType() const override;
   bool HasConstructionArguments(Sample expected_minimum,
                                 Sample expected_maximum,
                                 uint32_t expected_bucket_count) const override;
   void Add(Sample value) override;
   void AddCount(Sample value, int count) override;
-  scoped_ptr<HistogramSamples> SnapshotSamples() const override;
-  scoped_ptr<HistogramSamples> SnapshotDelta() override;
+  std::unique_ptr<HistogramSamples> SnapshotSamples() const override;
+  std::unique_ptr<HistogramSamples> SnapshotDelta() override;
   void AddSamples(const HistogramSamples& samples) override;
   bool AddSamplesFromPickle(base::PickleIterator* iter) override;
   void WriteHTMLGraph(std::string* output) const override;
   void WriteAscii(std::string* output) const override;
 
  protected:
   // This class, defined entirely within the .cc file, contains all the
   // common logic for building a Histogram and can be overridden by more
   // specific types to alter details of how the creation is done. It is
   // defined as an embedded class (rather than an anonymous one) so it
@@ skipping 44 matching lines @@
   FRIEND_TEST_ALL_PREFIXES(HistogramTest, CorruptSampleCounts);
 
   friend class StatisticsRecorder;  // To allow it to delete duplicates.
   friend class StatisticsRecorderTest;
 
   friend BASE_EXPORT HistogramBase* DeserializeHistogramInfo(
       base::PickleIterator* iter);
   static HistogramBase* DeserializeInfoImpl(base::PickleIterator* iter);
 
   // Implementation of SnapshotSamples function.
-  scoped_ptr<SampleVector> SnapshotSampleVector() const;
+  std::unique_ptr<SampleVector> SnapshotSampleVector() const;
 
   //----------------------------------------------------------------------------
   // Helpers for emitting Ascii graphic.  Each method appends data to output.
 
   void WriteAsciiImpl(bool graph_it,
                       const std::string& newline,
                       std::string* output) const;
 
   // Find out how large (graphically) the largest bucket will appear to be.
   double GetPeakBucketSize(const SampleVector& samples) const;
@@ skipping 19 matching lines @@
                              ListValue* buckets) const override;
 
   // Does not own this object. Should get from StatisticsRecorder.
   const BucketRanges* bucket_ranges_;
 
   Sample declared_min_;  // Less than this goes into the first bucket.
   Sample declared_max_;  // Over this goes into the last bucket.
 
   // Finally, provide the state that changes with the addition of each new
   // sample.
-  scoped_ptr<SampleVector> samples_;
+  std::unique_ptr<SampleVector> samples_;
 
   // Also keep a previous uploaded state for calculating deltas.
-  scoped_ptr<HistogramSamples> logged_samples_;
+  std::unique_ptr<HistogramSamples> logged_samples_;
 
   DISALLOW_COPY_AND_ASSIGN(Histogram);
 };
 
 //------------------------------------------------------------------------------
 
 // LinearHistogram is a more traditional histogram, with evenly spaced
 // buckets.
 class BASE_EXPORT LinearHistogram : public Histogram {
  public:
@@ skipping 20 matching lines @@
                                    Sample maximum,
                                    uint32_t bucket_count,
                                    int32_t flags);
   static HistogramBase* FactoryTimeGet(const char* name,
                                        TimeDelta minimum,
                                        TimeDelta maximum,
                                        uint32_t bucket_count,
                                        int32_t flags);
 
   // Create a histogram using data in persistent storage.
-  static scoped_ptr<HistogramBase> PersistentCreate(
+  static std::unique_ptr<HistogramBase> PersistentCreate(
       const std::string& name,
       Sample minimum,
       Sample maximum,
       const BucketRanges* ranges,
       HistogramBase::AtomicCount* counts,
       HistogramBase::AtomicCount* logged_counts,
       uint32_t counts_size,
       HistogramSamples::Metadata* meta,
       HistogramSamples::Metadata* logged_meta);
 
@@ skipping 70 matching lines @@
 class BASE_EXPORT BooleanHistogram : public LinearHistogram {
  public:
   static HistogramBase* FactoryGet(const std::string& name, int32_t flags);
 
   // Overload of the above function that takes a const char* |name| param,
   // to avoid code bloat from the std::string constructor being inlined into
   // call sites.
   static HistogramBase* FactoryGet(const char* name, int32_t flags);
 
   // Create a histogram using data in persistent storage.
-  static scoped_ptr<HistogramBase> PersistentCreate(
+  static std::unique_ptr<HistogramBase> PersistentCreate(
       const std::string& name,
       const BucketRanges* ranges,
       HistogramBase::AtomicCount* counts,
       HistogramBase::AtomicCount* logged_counts,
       HistogramSamples::Metadata* meta,
       HistogramSamples::Metadata* logged_meta);
 
   HistogramType GetHistogramType() const override;
 
  protected:
@@ skipping 29 matching lines @@
                                    int32_t flags);
 
   // Overload of the above function that takes a const char* |name| param,
   // to avoid code bloat from the std::string constructor being inlined into
   // call sites.
   static HistogramBase* FactoryGet(const char* name,
                                    const std::vector<Sample>& custom_ranges,
                                    int32_t flags);
 
   // Create a histogram using data in persistent storage.
-  static scoped_ptr<HistogramBase> PersistentCreate(
+  static std::unique_ptr<HistogramBase> PersistentCreate(
       const std::string& name,
       const BucketRanges* ranges,
       HistogramBase::AtomicCount* counts,
       HistogramBase::AtomicCount* logged_counts,
       uint32_t counts_size,
       HistogramSamples::Metadata* meta,
       HistogramSamples::Metadata* logged_meta);
 
   // Overridden from Histogram:
   HistogramType GetHistogramType() const override;
@@ skipping 31 matching lines @@
   static HistogramBase* DeserializeInfoImpl(base::PickleIterator* iter);
 
   static bool ValidateCustomRanges(const std::vector<Sample>& custom_ranges);
 
   DISALLOW_COPY_AND_ASSIGN(CustomHistogram);
 };
 
 }  // namespace base
 
 #endif  // BASE_METRICS_HISTOGRAM_H_