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

sync/internal_api/attachments/attachment_downloader_impl.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 "sync/internal_api/public/attachments/attachment_downloader_impl.h"
 
 #include "base/base64.h"
 #include "base/bind.h"
 #include "base/message_loop/message_loop.h"
 #include "base/metrics/histogram.h"
@@ skipping 188 matching lines @@
   } else if (response_code == net::URLFetcher::RESPONSE_CODE_INVALID) {
     result = DOWNLOAD_TRANSIENT_ERROR;
   }
   ReportResult(download_state, result, attachment_data);
   state_map_.erase(iter);
 }
 
 scoped_ptr<net::URLFetcher> AttachmentDownloaderImpl::CreateFetcher(
     const AttachmentUrl& url,
     const std::string& access_token) {
-  scoped_ptr<net::URLFetcher> url_fetcher(
-      net::URLFetcher::Create(GURL(url), net::URLFetcher::GET, this));
+  scoped_ptr<net::URLFetcher> url_fetcher =
+      net::URLFetcher::Create(GURL(url), net::URLFetcher::GET, this);
   AttachmentUploaderImpl::ConfigureURLFetcherCommon(
       url_fetcher.get(), access_token, raw_store_birthday_, model_type_,
       url_request_context_getter_.get());
   return url_fetcher.Pass();
 }
 
 void AttachmentDownloaderImpl::RequestAccessToken(
     DownloadState* download_state) {
   requests_waiting_for_access_token_.push_back(download_state);
   // Start access token request if there is no active one.
@@ skipping 56 matching lines @@
 
   if (crc32c_raw.size() != sizeof(*crc32c))
     return false;
 
   *crc32c =
       base::NetToHost32(*reinterpret_cast<const uint32_t*>(crc32c_raw.c_str()));
   return true;
 }
 
 }  // namespace syncer