Convert //base to use std::unique_ptr

base/metrics/statistics_recorder.cc

Index: base/metrics/statistics_recorder.cc
diff --git a/base/metrics/statistics_recorder.cc b/base/metrics/statistics_recorder.cc
index 2bb50ad3a33da3117475170fbefe152814c3e3e4..0840c9affde910bff0f4d3725964db009ae77437 100644
--- a/base/metrics/statistics_recorder.cc
+++ b/base/metrics/statistics_recorder.cc
@@ -4,11 +4,12 @@
 
 #include "base/metrics/statistics_recorder.h"
 
+#include <memory>
+
 #include "base/at_exit.h"
 #include "base/debug/leak_annotations.h"
 #include "base/json/string_escape.h"
 #include "base/logging.h"
-#include "base/memory/scoped_ptr.h"
 #include "base/metrics/histogram.h"
 #include "base/metrics/metrics_hashes.h"
 #include "base/stl_util.h"
@@ -147,7 +148,7 @@ HistogramBase* StatisticsRecorder::RegisterOrDeleteDuplicate(
 const BucketRanges* StatisticsRecorder::RegisterOrDeleteDuplicateRanges(
     const BucketRanges* ranges) {
   DCHECK(ranges->HasValidChecksum());
-  scoped_ptr<const BucketRanges> ranges_deleter;
+  std::unique_ptr<const BucketRanges> ranges_deleter;
 
   if (lock_ == NULL) {
     ANNOTATE_LEAKING_OBJECT_PTR(ranges);
@@ -429,9 +430,9 @@ void StatisticsRecorder::Reset() {
   if (!lock_)
     return;
 
-  scoped_ptr<HistogramMap> histograms_deleter;
-  scoped_ptr<CallbackMap> callbacks_deleter;
-  scoped_ptr<RangesMap> ranges_deleter;
+  std::unique_ptr<HistogramMap> histograms_deleter;
+  std::unique_ptr<CallbackMap> callbacks_deleter;
+  std::unique_ptr<RangesMap> ranges_deleter;
   // We don't delete lock_ on purpose to avoid having to properly protect
   // against it going away after we checked for NULL in the static methods.
   {