Convert implicit scoped_refptr constructor calls to explicit ones, part 1

chrome/browser/cocoa/web_drag_source.mm

 // Copyright (c) 2009 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.
 
 #import "chrome/browser/cocoa/web_drag_source.h"
 
 #include "base/file_path.h"
 #include "base/nsimage_cache_mac.h"
 #include "base/string_util.h"
 #include "base/sys_string_conversions.h"
@@ skipping 289 matching lines @@
       GetFileNameFromDragData(*dropData_) : downloadFileName_;
   FilePath filePath(SysNSStringToUTF8(path));
   filePath = filePath.Append(fileName);
   FileStream* fileStream =
       drag_download_util::CreateFileStreamForDrop(&filePath);
   if (!fileStream)
     return nil;
 
   if (downloadURL_.is_valid()) {
     TabContents* tabContents = [contentsView_ tabContents];
-    scoped_refptr<DragDownloadFile> dragFileDownloader = new DragDownloadFile(
+    scoped_refptr<DragDownloadFile> dragFileDownloader(new DragDownloadFile(
         filePath,
         linked_ptr<net::FileStream>(fileStream),
         downloadURL_,
         tabContents->GetURL(),
         tabContents->encoding(),
-        tabContents);
+        tabContents));
 
     // The finalizer will take care of closing and deletion.
     dragFileDownloader->Start(
         new drag_download_util::PromiseFileFinalizer(dragFileDownloader));
   } else {
     // The writer will take care of closing and deletion.
     g_browser_process->file_thread()->message_loop()->PostTask(FROM_HERE,
         new PromiseWriterTask(*dropData_, fileStream));
   }
 
@@ skipping 76 matching lines @@
 
 - (NSImage*)dragImage {
   if (dragImage_)
     return dragImage_;
 
   // Default to returning a generic image.
   return nsimage_cache::ImageNamed(@"nav.pdf");
 }
 
 @end  // @implementation WebDragSource (Private)