drive: Change the return type of ResourceMetadata's methods to FileError

chrome/browser/chromeos/drive/file_system/remove_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/remove_operation.h"
 
 #include "base/sequenced_task_runner.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"
@@ skipping 31 matching lines @@
     if (error != FILE_ERROR_OK)
       return error;
     if (!entries.empty())
       return FILE_ERROR_NOT_EMPTY;
   }
 
   error = cache->Remove(*local_id);
   if (error != FILE_ERROR_OK)
     return error;
 
-  *changed_directory_path = metadata->GetFilePath(*local_id).DirName();
+  *changed_directory_path = path.DirName();
 
   // Move to the trash.
   entry.set_parent_local_id(util::kDriveTrashDirLocalId);
   return metadata->RefreshEntry(entry);
 }
 
 }  // namespace
 
 RemoveOperation::RemoveOperation(
     base::SequencedTaskRunner* blocking_task_runner,
@@ skipping 48 matching lines @@
   if (error == FILE_ERROR_OK) {
     observer_->OnDirectoryChangedByOperation(*changed_directory_path);
     observer_->OnEntryUpdatedByOperation(*local_id);
   }
 
   callback.Run(error);
 }
 
 }  // namespace file_system
 }  // namespace drive