Second patch in making destructors of refcounted objects private.

net/url_request/url_request_file_job.cc

 // Copyright (c) 2006-2009 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.
 
 // For loading files, we make use of overlapped i/o to ensure that reading from
 // the filesystem (e.g., a network filesystem) does not block the calling
 // thread.  An alternative approach would be to use a background thread or pool
 // of threads, but it seems better to leverage the operating system's ability
 // to do background file reads for us.
 //
@@ skipping 42 matching lines @@
   }
 
   void Cancel() {
     owner_ = NULL;
 
     AutoLock locked(lock_);
     owner_loop_ = NULL;
   }
 
  private:
+  friend class base::RefCountedThreadSafe<URLRequestFileJob::AsyncResolver>;
+
+  ~AsyncResolver() {}
+
   void ReturnResults(bool exists, const file_util::FileInfo& file_info) {
     if (owner_)
       owner_->DidResolve(exists, file_info);
   }
 
   URLRequestFileJob* owner_;
 
   Lock lock_;
   MessageLoop* owner_loop_;
 };
@@ skipping 215 matching lines @@
   if (!resolved)
     return false;
 
   *location = net::FilePathToFileURL(new_path);
   *http_status_code = 301;
   return true;
 #else
   return false;
 #endif
 }