Shift passage of FileStream in downloads system to be by scoped_ptr<>.

content/browser/web_contents/web_drag_source_gtk.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/web_contents/web_drag_source_gtk.h"
 
 #include <string>
 
 #include "base/file_util.h"
 #include "base/nix/mime_util_xdg.h"
@@ skipping 226 matching lines @@
                            &file_url_len,
                            &file_url_value) &&
           file_url_value) {
         // Convert from the file url to the file path.
         GURL file_url(std::string(reinterpret_cast<char*>(file_url_value),
                                   file_url_len));
         g_free(file_url_value);
         FilePath file_path;
         if (net::FileURLToFilePath(file_url, &file_path)) {
           // Open the file as a stream.
-          net::FileStream* file_stream =
+          scoped_ptr<net::FileStream> file_stream(
               drag_download_util::CreateFileStreamForDrop(
                   &file_path,
-                  content::GetContentClient()->browser()->GetNetLog());
-          if (file_stream) {
+                  content::GetContentClient()->browser()->GetNetLog()));
+          if (file_stream.get()) {
             // Start downloading the file to the stream.
             scoped_refptr<DragDownloadFile> drag_file_downloader =
                 new DragDownloadFile(
                     file_path,
-                    linked_ptr<net::FileStream>(file_stream),
+                    file_stream.Pass(),
                     download_url_,
                     content::Referrer(web_contents_->GetURL(),
                                       drop_data_->referrer_policy),
                     web_contents_->GetEncoding(),
                     web_contents_);
             drag_file_downloader->Start(
                 new drag_download_util::PromiseFileFinalizer(
                     drag_file_downloader));
 
             // Set the status code to success.
@@ skipping 136 matching lines @@
   cairo_clip(cr);
   cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
   gdk_cairo_set_source_pixbuf(cr, drag_pixbuf_, 0, 0);
   cairo_paint(cr);
   cairo_destroy(cr);
 
   return TRUE;
 }
 
 }  // namespace content