Add an option to specify requested fields for fetching metadata.

storage/browser/fileapi/async_file_util_adapter.cc

 // Copyright (c) 2013 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 "storage/browser/fileapi/async_file_util_adapter.h"
 
 #include <vector>
 
 #include "base/bind.h"
 #include "base/sequenced_task_runner.h"
@@ skipping 177 matching lines @@
       Bind(&FileSystemFileUtil::CreateDirectory,
            Unretained(sync_file_util_.get()),
            base::Owned(context_ptr), url, exclusive, recursive),
       callback);
   DCHECK(success);
 }
 
 void AsyncFileUtilAdapter::GetFileInfo(
     scoped_ptr<FileSystemOperationContext> context,
     const FileSystemURL& url,
+    int /* fields */,
     const GetFileInfoCallback& callback) {
   FileSystemOperationContext* context_ptr = context.release();
   GetFileInfoHelper* helper = new GetFileInfoHelper;
   const bool success = context_ptr->task_runner()->PostTaskAndReply(
       FROM_HERE,
       Bind(&GetFileInfoHelper::GetFileInfo, Unretained(helper),
            sync_file_util_.get(), base::Owned(context_ptr), url),
       Bind(&GetFileInfoHelper::ReplyFileInfo, Owned(helper), callback));
   DCHECK(success);
 }
@@ skipping 133 matching lines @@
   GetFileInfoHelper* helper = new GetFileInfoHelper;
   const bool success = context_ptr->task_runner()->PostTaskAndReply(
       FROM_HERE,
       Bind(&GetFileInfoHelper::CreateSnapshotFile, Unretained(helper),
            sync_file_util_.get(), base::Owned(context_ptr), url),
       Bind(&GetFileInfoHelper::ReplySnapshotFile, Owned(helper), callback));
   DCHECK(success);
 }
 
 }  // namespace storage