Adjust URLFetcher::Create API so that object is returned as scoped_ptr.

google_apis/drive/base_requests.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 "google_apis/drive/base_requests.h"
 
 #include "base/files/file_util.h"
 #include "base/json/json_reader.h"
 #include "base/json/json_writer.h"
 #include "base/location.h"
@@ skipping 336 matching lines @@
     base::ThreadTaskRunnerHandle::Get()->PostTask(
         FROM_HERE, base::Bind(&UrlFetchRequestBase::CompleteRequestWithError,
                               weak_ptr_factory_.GetWeakPtr(), error_code));
     return;
   }
 
   re_authenticate_callback_ = callback;
   DVLOG(1) << "URL: " << url.spec();
 
   URLFetcher::RequestType request_type = GetRequestType();
-  url_fetcher_.reset(URLFetcher::Create(url, request_type, this));
+  url_fetcher_ = URLFetcher::Create(url, request_type, this);
   url_fetcher_->SetRequestContext(sender_->url_request_context_getter());
   // Always set flags to neither send nor save cookies.
   url_fetcher_->SetLoadFlags(
       net::LOAD_DO_NOT_SEND_COOKIES | net::LOAD_DO_NOT_SAVE_COOKIES |
       net::LOAD_DISABLE_CACHE);
 
   base::FilePath output_file_path;
   GetContentCallback get_content_callback;
   GetOutputFilePath(&output_file_path, &get_content_callback);
   if (!get_content_callback.is_null())
@@ skipping 642 matching lines @@
   download_action_callback_.Run(code, temp_file);
   OnProcessURLFetchResultsComplete();
 }
 
 void DownloadFileRequestBase::RunCallbackOnPrematureFailure(
     DriveApiErrorCode code) {
   download_action_callback_.Run(code, base::FilePath());
 }
 
 }  // namespace google_apis