Add an option to specify requested fields for fetching metadata.

storage/browser/fileapi/file_system_context.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_context.h"
 
 #include "base/bind.h"
 #include "base/single_thread_task_runner.h"
 #include "base/stl_util.h"
 #include "base/task_runner_util.h"
@@ skipping 608 matching lines @@
   base::FilePath child = url.virtual_path();
   base::FilePath path;
 
   if (parent.empty()) {
     path = child;
   } else if (parent != child) {
     bool result = parent.AppendRelativePath(child, &path);
     DCHECK(result);
   }
 
+  // TODO(mtomasz): Not all fields should be required for ResolveURL.
   operation_runner()->GetMetadata(
-      url, base::Bind(&DidGetMetadataForResolveURL, path, callback, info));
+      url, FileSystemOperation::GET_METADATA_FIELD_IS_DIRECTORY |
+               FileSystemOperation::GET_METADATA_FIELD_SIZE |
+               FileSystemOperation::GET_METADATA_FIELD_LAST_MODIFIED,
+      base::Bind(&DidGetMetadataForResolveURL, path, callback, info));
 }
 
 }  // namespace storage