Re-write many calls to WrapUnique() with MakeUnique()

chrome/browser/download/download_dir_policy_handler.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/browser/download/download_dir_policy_handler.h"
 
 #include <stddef.h>
 
 #include <memory>
 
@@ skipping 87 matching lines @@
 #else
   expanded_value = policy::path_parser::ExpandPathVariables(string_value);
 #endif
   // Make sure the path isn't empty, since that will point to an undefined
   // location; the default location is used instead in that case.
   // This is checked after path expansion because a non-empty policy value can
   // lead to an empty path value after expansion (e.g. "\"\"").
   if (expanded_value.empty())
     expanded_value = DownloadPrefs::GetDefaultDownloadDirectory().value();
   prefs->SetValue(prefs::kDownloadDefaultDirectory,
-                  base::WrapUnique(new base::StringValue(expanded_value)));
+                  base::MakeUnique<base::StringValue>(expanded_value));
 
   // If the policy is mandatory, prompt for download should be disabled.
   // Otherwise, it would enable a user to bypass the mandatory policy.
   if (policies.Get(policy_name())->level == policy::POLICY_LEVEL_MANDATORY) {
     prefs->SetBoolean(prefs::kPromptForDownload, false);
 #if defined(OS_CHROMEOS)
     if (download_to_drive) {
       prefs->SetBoolean(drive::prefs::kDisableDrive, false);
     }
 #endif
   }
 }
 
 void DownloadDirPolicyHandler::ApplyPolicySettings(
     const policy::PolicyMap& /* policies */,
     PrefValueMap* /* prefs */) {
   NOTREACHED();
 }