Rename GDataFileSystem* to DriveFileSystem*

chrome/browser/chromeos/gdata/drive_files.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_DRIVE_FILES_H_
 #define CHROME_BROWSER_CHROMEOS_GDATA_DRIVE_FILES_H_
 
 #include <map>
 #include <set>
 #include <string>
@@ skipping 99 matching lines @@
   // The resource id of the parent folder. This piece of information is needed
   // to pair files from change feeds with their directory parents withing the
   // existing file system snapshot (DriveResourceMetadata::resource_map_).
   const std::string& parent_resource_id() const { return parent_resource_id_; }
 
   // True if file was deleted. Used only for instances that are generated from
   // delta feeds.
   bool is_deleted() const { return deleted_; }
 
   // Returns virtual file path representing this file system entry. This path
-  // corresponds to file path expected by public methods of GDataFileSystem
+  // corresponds to file path expected by public methods of DriveFileSystem
   // class.
   FilePath GetFilePath() const;
 
   // Sets |base_name_| based on the value of |title_| without name
   // de-duplication (see AddEntry() for details on de-duplication).
   virtual void SetBaseNameFromTitle();
 
  protected:
   // For access to SetParent from AddEntry.
   friend class DriveDirectory;
@@ skipping 146 matching lines @@
   // Collection of children.
   ChildMap child_files_;
   ChildMap child_directories_;
 
   DISALLOW_COPY_AND_ASSIGN(DriveDirectory);
 };
 
 }  // namespace gdata
 
 #endif  // CHROME_BROWSER_CHROMEOS_GDATA_DRIVE_FILES_H_