gdata: Remove use of FindEntryByPathAsync() from file_manager_util.cc

chrome/browser/chromeos/gdata/gdata.proto

 // 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.
 //
 // Protocol buffer definitions for serializing GData files and directories.
 
 syntax = "proto2";
 
 option optimize_for = LITE_RUNTIME;
 
 package gdata;
 
 // Represents base::PlatformFileInfo.
 message PlatformFileInfoProto {
   optional int64 size = 1;
   optional bool is_directory = 2;
   optional bool is_symbolic_link = 3;
   optional int64 last_modified = 4;
   optional int64 last_accessed = 5;
   optional int64 creation_time = 6;
 }
 
 // Represents GDataEntry.
 message GDataEntryProto {
   optional PlatformFileInfoProto file_info = 1;
+  optional string file_name = 2;
   optional string title = 3;
   optional string resource_id = 4;
   optional string edit_url = 5;
   optional string content_url = 6;
   optional string parent_resource_id = 7;
 }
 
 // Represents GDataFile.
 message GDataFileProto {
   optional GDataEntryProto gdata_entry = 1;
@@ skipping 17 matching lines @@
   optional string upload_url = 5;
   optional uint32 origin = 6;
   repeated GDataDirectoryProto child_directories = 7;
   repeated GDataFileProto child_files = 8;
 }
 // Represents GDataRootDirectory.
 message GDataRootDirectoryProto {
   optional GDataDirectoryProto gdata_directory = 1;
   optional int32 largest_changestamp = 2;
 }