Rename GDataSystemService to DriveSystemService

chrome/browser/chromeos/gdata/file_write_helper.h

 // 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.
 
 #ifndef CHROME_BROWSER_CHROMEOS_GDATA_FILE_WRITE_HELPER_H_
 #define CHROME_BROWSER_CHROMEOS_GDATA_FILE_WRITE_HELPER_H_
 
 #include "base/bind.h"
 #include "base/file_path.h"
 #include "base/memory/weak_ptr.h"
@@ skipping 26 matching lines @@
       const FilePath& file_path,
       const OpenFileCallback& callback,
       DriveFileError result);
   void PrepareWritableFileAndRunAfterOpenFile(
       const FilePath& file_path,
       const OpenFileCallback& callback,
       DriveFileError result,
       const FilePath& local_cache_path);
   void PrepareWritableFileAndRunAfterCallback(const FilePath& file_path);
 
-  // File system owned by GDataSystemService.
+  // File system owned by DriveSystemService.
   DriveFileSystemInterface* file_system_;
 
   // WeakPtrFactory bound to the UI thread.
   // 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<FileWriteHelper> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(FileWriteHelper);
 };
 
 }  // namespace gdata
 
 #endif  // CHROME_BROWSER_CHROMEOS_GDATA_FILE_WRITE_HELPER_H_