drive: Stop returning FilePath from GetResourceEntryById

chrome/browser/chromeos/drive/file_system/update_operation.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 "chrome/browser/chromeos/drive/file_system/update_operation.h"
 
 #include "chrome/browser/chromeos/drive/drive.pb.h"
 #include "chrome/browser/chromeos/drive/file_cache.h"
 #include "chrome/browser/chromeos/drive/file_system/operation_observer.h"
 #include "chrome/browser/chromeos/drive/file_system_util.h"
 #include "chrome/browser/chromeos/drive/job_scheduler.h"
 #include "chrome/browser/chromeos/drive/resource_entry_conversion.h"
 #include "chrome/browser/chromeos/drive/resource_metadata.h"
 #include "content/public/browser/browser_thread.h"
 
 using content::BrowserThread;
 
 namespace drive {
 namespace file_system {
 
 namespace {
 
 // Gets locally stored information about the specified file.
 FileError GetFileLocalState(internal::ResourceMetadata* metadata,
                             internal::FileCache* cache,
                             const std::string& resource_id,
                             ResourceEntry* entry,
                             base::FilePath* drive_file_path,
                             base::FilePath* cache_file_path) {
-  FileError error = metadata->GetResourceEntryById(resource_id, NULL, entry);
+  FileError error = metadata->GetResourceEntryById(resource_id, entry);
   if (error != FILE_ERROR_OK)
     return error;
 
   if (entry->file_info().is_directory())
     return FILE_ERROR_NOT_A_FILE;
 
   *drive_file_path = metadata->GetFilePath(resource_id);
   if (drive_file_path->empty())
     return FILE_ERROR_NOT_FOUND;
 
@@ skipping 140 matching lines @@
   if (error != FILE_ERROR_OK) {
     callback.Run(error);
     return;
   }
   observer_->OnDirectoryChangedByOperation(drive_file_path->DirName());
   callback.Run(FILE_ERROR_OK);
 }
 
 }  // namespace file_system
 }  // namespace drive