Stop returning the true root path of each filesystem from openFileSystem....

content/browser/file_system/file_system_dispatcher_host.cc

 // Copyright (c) 2010 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/file_system/file_system_dispatcher_host.h"
 
 #include <string>
 #include <vector>
 
 #include "base/file_path.h"
@@ skipping 216 matching lines @@
   }
 }
 
 FileSystemOperation* FileSystemDispatcherHost::GetNewOperation(
     int request_id) {
   BrowserFileSystemCallbackDispatcher* dispatcher =
       new BrowserFileSystemCallbackDispatcher(this, request_id);
   FileSystemOperation* operation = new FileSystemOperation(
       dispatcher,
       BrowserThread::GetMessageLoopProxyForThread(BrowserThread::FILE),
-      context_);
+      context_,
+      NULL);
   operations_.AddWithID(operation, request_id);
   return operation;
 }
 
 void FileSystemDispatcherHost::UnregisterOperation(int request_id) {
   DCHECK(operations_.Lookup(request_id));
   operations_.Remove(request_id);
 }