Rename GDataFileSystem* to DriveFileSystem*

chrome/browser/chromeos/gdata/mock_gdata_file_system.cc

Index: chrome/browser/chromeos/gdata/mock_gdata_file_system.cc
diff --git a/chrome/browser/chromeos/gdata/mock_gdata_file_system.cc b/chrome/browser/chromeos/gdata/mock_gdata_file_system.cc
deleted file mode 100644
index d3e938dd34a57da3ec77aabd665c9cc75f635d90..0000000000000000000000000000000000000000
--- a/chrome/browser/chromeos/gdata/mock_gdata_file_system.cc
+++ /dev/null
@@ -1,15 +0,0 @@
-// 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/gdata/mock_gdata_file_system.h"
-
-namespace gdata {
-
-MockGDataFileSystem::MockGDataFileSystem() {
-}
-
-MockGDataFileSystem::~MockGDataFileSystem() {
-}
-
-}  // namespace gdata