Convert //chrome/installer from scoped_ptr to std::unique_ptr

chrome/installer/util/uninstall_metrics.cc

 // Copyright 2013 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 "chrome/installer/util/uninstall_metrics.h"
 
+#include <memory>
 #include <string>
 
 #include "base/files/file_path.h"
 #include "base/json/json_file_value_serializer.h"
 #include "base/logging.h"
-#include "base/memory/scoped_ptr.h"
 #include "base/strings/utf_string_conversions.h"
 #include "chrome/common/pref_names.h"
 #include "chrome/installer/util/util_constants.h"
 #include "components/metrics/metrics_pref_names.h"
 
 namespace installer {
 
 namespace {
 
 // Given a DictionaryValue containing a set of uninstall metrics,
@@ skipping 48 matching lines @@
   }
 
   return true;
 }
 
 bool ExtractUninstallMetricsFromFile(const base::FilePath& file_path,
                                      base::string16* uninstall_metrics_string) {
   JSONFileValueDeserializer json_deserializer(file_path);
 
   std::string json_error_string;
-  scoped_ptr<base::Value> root = json_deserializer.Deserialize(NULL, NULL);
+  std::unique_ptr<base::Value> root = json_deserializer.Deserialize(NULL, NULL);
   if (!root.get())
     return false;
 
   // Preferences should always have a dictionary root.
   if (!root->IsType(base::Value::TYPE_DICTIONARY))
     return false;
 
   return ExtractUninstallMetrics(
       *static_cast<base::DictionaryValue*>(root.get()),
       uninstall_metrics_string);
 }
 
 }  // namespace installer