Convert implicit scoped_refptr constructor calls to explicit ones, part 1

net/disk_cache/stats_histogram.cc

 // Copyright (c) 2008 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 "net/disk_cache/stats_histogram.h"
 
 #include "base/logging.h"
 #include "net/disk_cache/stats.h"
 
 namespace disk_cache {
@@ skipping 24 matching lines @@
   }
 
   DCHECK(HISTOGRAM == histogram->histogram_type());
   DCHECK(histogram->HasConstructorArguments(minimum, maximum, bucket_count));
 
   // We're preparing for an otherwise unsafe upcast by ensuring we have the
   // proper class type.
   Histogram* temp_histogram = histogram.get();
   StatsHistogram* temp_stats_histogram =
       static_cast<StatsHistogram*>(temp_histogram);
-  scoped_refptr<StatsHistogram> return_histogram = temp_stats_histogram;
+  scoped_refptr<StatsHistogram> return_histogram(temp_stats_histogram);
   return return_histogram;
 }
 
 bool StatsHistogram::Init(const Stats* stats) {
   DCHECK(stats);
   if (stats_)
     return false;
 
   SetFlags(kUmaTargetedHistogramFlag);
 
@@ skipping 24 matching lines @@
   stats_->Snapshot(&my_sample);
 
   *sample = my_sample;
 
   // Only report UMA data once.
   StatsHistogram* mutable_me = const_cast<StatsHistogram*>(this);
   mutable_me->ClearFlags(kUmaTargetedHistogramFlag);
 }
 
 }  // namespace disk_cache