Update OS X to use scoped_refptr<T>::get() rather than implicit "operator T*"

content/browser/web_contents/web_drag_source_mac.mm

 // 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.
 
 #import "content/browser/web_contents/web_drag_source_mac.h"
 
 #include <sys/param.h>
 
 #include "base/bind.h"
 #include "base/files/file_path.h"
@@ skipping 370 matching lines @@
   if (downloadURL_.is_valid()) {
     scoped_refptr<DragDownloadFile> dragFileDownloader(new DragDownloadFile(
         filePath,
         fileStream.Pass(),
         downloadURL_,
         content::Referrer(contents_->GetURL(), dropData_->referrer_policy),
         contents_->GetEncoding(),
         contents_));
 
     // The finalizer will take care of closing and deletion.
-    dragFileDownloader->Start(new PromiseFileFinalizer(dragFileDownloader));
+    dragFileDownloader->Start(new PromiseFileFinalizer(
+        dragFileDownloader.get()));
   } else {
     // The writer will take care of closing and deletion.
     BrowserThread::PostTask(BrowserThread::FILE,
                             FROM_HERE,
                             base::Bind(&PromiseWriterHelper,
                                        *dropData_,
                                        base::Passed(&fileStream)));
   }
 }
 
@@ skipping 98 matching lines @@
 - (NSImage*)dragImage {
   if (dragImage_)
     return dragImage_;
 
   // Default to returning a generic image.
   return content::GetContentClient()->GetNativeImageNamed(
       IDR_DEFAULT_FAVICON).ToNSImage();
 }
 
 @end  // @implementation WebDragSource (Private)