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

extensions/shell/browser/shell_url_request_context_getter.cc

 // 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.
 
 #include "extensions/shell/browser/shell_url_request_context_getter.h"
 
 #include <utility>
 
 #include "base/memory/ptr_util.h"
 #include "content/public/browser/resource_request_info.h"
@@ skipping 20 matching lines @@
                                             std::move(request_interceptors),
                                             net_log),
       browser_context_(browser_context),
       extension_info_map_(extension_info_map) {}
 
 ShellURLRequestContextGetter::~ShellURLRequestContextGetter() {
 }
 
 std::unique_ptr<net::NetworkDelegate>
 ShellURLRequestContextGetter::CreateNetworkDelegate() {
-  return base::WrapUnique(
-      new ShellNetworkDelegate(browser_context_, extension_info_map_));
+  return base::MakeUnique<ShellNetworkDelegate>(browser_context_,
+                                                extension_info_map_);
 }
 
 }  // namespace extensions