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

sync/internal_api/attachments/attachment_downloader_impl.cc

Index: sync/internal_api/attachments/attachment_downloader_impl.cc
diff --git a/sync/internal_api/attachments/attachment_downloader_impl.cc b/sync/internal_api/attachments/attachment_downloader_impl.cc
index f2e6a007aa0f1dc5dd921f4c37713b49081095d8..2915296d9f1bf88fca9d8c13ceffa83594bbaf2a 100644
--- a/sync/internal_api/attachments/attachment_downloader_impl.cc
+++ b/sync/internal_api/attachments/attachment_downloader_impl.cc
@@ -206,8 +206,8 @@ void AttachmentDownloaderImpl::OnURLFetchComplete(
 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());