Second patch in making destructors of refcounted objects private.

net/url_request/url_request_file_dir_job.h

Index: net/url_request/url_request_file_dir_job.h
===================================================================
--- net/url_request/url_request_file_dir_job.h	(revision 31079)
+++ net/url_request/url_request_file_dir_job.h	(working copy)
@@ -17,7 +17,6 @@
     public net::DirectoryLister::DirectoryListerDelegate {
  public:
   URLRequestFileDirJob(URLRequest* request, const FilePath& dir_path);
-  virtual ~URLRequestFileDirJob();
 
   // URLRequestJob methods:
   virtual void Start();
@@ -35,6 +34,8 @@
   bool list_complete() const { return list_complete_; }
 
  private:
+  virtual ~URLRequestFileDirJob();
+
   void CloseLister();
   // When we have data and a read has been pending, this function
   // will fill the response buffer and notify the request