Convert //base to use std::unique_ptr

base/test/histogram_tester.h

 // Copyright 2014 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.
 
 #ifndef BASE_TEST_HISTOGRAM_TESTER_H_
 #define BASE_TEST_HISTOGRAM_TESTER_H_
 
 #include <map>
+#include <memory>
 #include <ostream>
 #include <string>
 #include <utility>
 #include <vector>
 
 #include "base/macros.h"
-#include "base/memory/scoped_ptr.h"
 #include "base/metrics/histogram.h"
 #include "base/metrics/histogram_base.h"
 
 namespace base {
 
 struct Bucket;
 class HistogramSamples;
 
 // HistogramTester provides a simple interface for examining histograms, UMA
 // or otherwise. Tests can use this interface to verify that histogram data is
@@ skipping 60 matching lines @@
   // ...
   //   base::HistogramTester::CountsMap expected_counts;
   //   expected_counts["MyMetric.A"] = 1;
   //   expected_counts["MyMetric.B"] = 1;
   //   EXPECT_THAT(histogram_tester.GetTotalCountsForPrefix("MyMetric."),
   //               testing::ContainerEq(expected_counts));
   CountsMap GetTotalCountsForPrefix(const std::string& query) const;
 
   // Access a modified HistogramSamples containing only what has been logged
   // to the histogram since the creation of this object.
-  scoped_ptr<HistogramSamples> GetHistogramSamplesSinceCreation(
+  std::unique_ptr<HistogramSamples> GetHistogramSamplesSinceCreation(
       const std::string& histogram_name) const;
 
  private:
   // Verifies and asserts that value in the |sample| bucket matches the
   // |expected_count|. The bucket's current value is determined from |samples|
   // and is modified based on the snapshot stored for histogram |name|.
   void CheckBucketCount(const std::string& name,
                         base::HistogramBase::Sample sample,
                         base::Histogram::Count expected_count,
                         const base::HistogramSamples& samples) const;
@@ skipping 21 matching lines @@
 
   base::HistogramBase::Sample min;
   base::HistogramBase::Count count;
 };
 
 void PrintTo(const Bucket& value, std::ostream* os);
 
 }  // namespace base
 
 #endif  // BASE_TEST_HISTOGRAM_TESTER_H_