Add an option to specify requested fields for fetching metadata.

storage/browser/fileapi/file_system_dir_url_request_job.cc

 // 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.
 
 #include "storage/browser/fileapi/file_system_dir_url_request_job.h"
 
 #include <algorithm>
 
 #include "base/bind.h"
 #include "base/compiler_specific.h"
@@ skipping 144 matching lines @@
   }
 }
 
 void FileSystemDirURLRequestJob::GetMetadata(size_t index) {
   const DirectoryEntry& entry = entries_[index];
   const FileSystemURL url = file_system_context_->CreateCrackedFileSystemURL(
       url_.origin(), url_.type(),
       url_.path().Append(base::FilePath(entry.name)));
   DCHECK(url.is_valid());
   file_system_context_->operation_runner()->GetMetadata(
-      url,
+      url, FileSystemOperation::GET_METADATA_FIELD_SIZE |
+               FileSystemOperation::GET_METADATA_FIELD_LAST_MODIFIED,
       base::Bind(&FileSystemDirURLRequestJob::DidGetMetadata, this, index));
 }
 
 void FileSystemDirURLRequestJob::DidGetMetadata(
     size_t index,
     base::File::Error result,
     const base::File::Info& file_info) {
   if (result != base::File::FILE_OK) {
     int rv = net::ERR_FILE_NOT_FOUND;
     if (result == base::File::FILE_ERROR_INVALID_URL)
@@ skipping 12 matching lines @@
 
   if (index < entries_.size() - 1) {
     GetMetadata(index + 1);
   } else {
     set_expected_content_size(data_.size());
     NotifyHeadersComplete();
   }
 }
 
 }  // namespace storage