Switch to using scoped_ptr with UserData

content/browser/download/download_request_core.cc

 // Copyright (c) 2012 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 "content/browser/download/download_request_core.h"
 
 #include <string>
 
 #include "base/bind.h"
 #include "base/callback_helpers.h"
@@ skipping 65 matching lines @@
   DownloadUrlParameters::OnStartedCallback on_started_callback_;
 };
 
 // static
 const int DownloadRequestData::kKey = 0;
 
 // static
 void DownloadRequestData::Attach(net::URLRequest* request,
                                  DownloadUrlParameters* parameters,
                                  uint32_t download_id) {
-  DownloadRequestData* request_data = new DownloadRequestData;
+  auto request_data = base::MakeUnique<DownloadRequestData>();
   request_data->save_info_.reset(
       new DownloadSaveInfo(parameters->GetSaveInfo()));
   request_data->download_id_ = download_id;
   request_data->transient_ = parameters->is_transient();
   request_data->on_started_callback_ = parameters->callback();
-  request->SetUserData(&kKey, request_data);
+  request->SetUserData(&kKey, std::move(request_data));
 }
 
 // static
 DownloadRequestData* DownloadRequestData::Get(net::URLRequest* request) {
   return static_cast<DownloadRequestData*>(request->GetUserData(&kKey));
 }
 
 // static
 void DownloadRequestData::Detach(net::URLRequest* request) {
   request->RemoveUserData(&kKey);
@@ skipping 573 matching lines @@
   // old servers that didn't implement "If-Match" and must be ignored when
   // "If-Match" presents.
   if (has_last_modified) {
     request->SetExtraRequestHeaderByName(
         net::HttpRequestHeaders::kIfUnmodifiedSince, params->last_modified(),
         true);
   }
 }
 
 }  // namespace content