drive: Stop using resource ID to access local metadata in OpenFileOperation

chrome/browser/chromeos/drive/file_system/open_file_operation.h

 // Copyright 2013 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.
 
 #ifndef CHROME_BROWSER_CHROMEOS_DRIVE_FILE_SYSTEM_OPEN_FILE_OPERATION_H_
 #define CHROME_BROWSER_CHROMEOS_DRIVE_FILE_SYSTEM_OPEN_FILE_OPERATION_H_
 
 #include <map>
 
 #include "base/basictypes.h"
@@ skipping 54 matching lines @@
                                FileError error);
 
   // Part of OpenFile(). Called after file downloading is completed.
   void OpenFileAfterFileDownloaded(const OpenFileCallback& callback,
                                    FileError error,
                                    const base::FilePath& local_file_path,
                                    scoped_ptr<ResourceEntry> entry);
 
   // Part of OpenFile(). Called after marking the cache file dirty.
   void OpenFileAfterMarkDirty(const base::FilePath& local_file_path,
-                              const std::string& resource_id,
+                              const std::string& local_id,
                               const OpenFileCallback& callback,
                               FileError error);
 
-  // Closes the file with |resource_id|.
-  void CloseFile(const std::string& resource_id);
+  // Closes the file with |local_id|.
+  void CloseFile(const std::string& local_id);
 
   scoped_refptr<base::SequencedTaskRunner> blocking_task_runner_;
   OperationObserver* observer_;
   internal::FileCache* cache_;
 
   scoped_ptr<CreateFileOperation> create_file_operation_;
   scoped_ptr<DownloadOperation> download_operation_;
 
-  // The map from resource id for an opened file to the number how many times
+  // The map from local id for an opened file to the number how many times
   // the file is opened.
   std::map<std::string, int> open_files_;
 
   // Note: This should remain the last member so it'll be destroyed and
   // invalidate its weak pointers before any other members are destroyed.
   base::WeakPtrFactory<OpenFileOperation> weak_ptr_factory_;
   DISALLOW_COPY_AND_ASSIGN(OpenFileOperation);
 };
 
 }  // namespace file_system
 }  // namespace drive
 
 #endif  // CHROME_BROWSER_CHROMEOS_DRIVE_FILE_SYSTEM_OPEN_FILE_OPERATION_H_