Add OVERRIDE to chrome/browser/ui/gtk/.

chrome/browser/ui/gtk/gtk_tree.h

 // Copyright (c) 2011 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_UI_GTK_GTK_TREE_H_
 #define CHROME_BROWSER_UI_GTK_GTK_TREE_H_
 #pragma once
 
 #include <gtk/gtk.h>
 
@@ skipping 95 matching lines @@
 
   // Callback checking whether a row may be selected.  We use some rows in the
   // table as headers/separators for the groups, which should not be selectable.
   static gboolean OnSelectionFilter(GtkTreeSelection* selection,
                                     GtkTreeModel* model,
                                     GtkTreePath* path,
                                     gboolean path_currently_selected,
                                     gpointer user_data);
 
   // ui::TableModelObserver implementation.
-  virtual void OnModelChanged();
-  virtual void OnItemsChanged(int start, int length);
-  virtual void OnItemsAdded(int start, int length);
-  virtual void OnItemsRemoved(int start, int length);
+  virtual void OnModelChanged() OVERRIDE;
+  virtual void OnItemsChanged(int start, int length) OVERRIDE;
+  virtual void OnItemsAdded(int start, int length) OVERRIDE;
+  virtual void OnItemsRemoved(int start, int length) OVERRIDE;
 
  private:
   // Return whether the row pointed to by |iter| is a group row, i.e. a group
   // header, or a separator.
   bool IsGroupRow(GtkTreeIter* iter) const;
 
   // Return the index into the list store for the given model row.
   int GetListStoreIndexForModelRow(int model_row) const;
 
   // Add the values from |row| of the ui::TableModel.
@@ skipping 74 matching lines @@
   GtkTreeStore* tree_store_;
   ui::TreeModel* tree_model_;
   std::vector<GdkPixbuf*> pixbufs_;
 
   DISALLOW_COPY_AND_ASSIGN(TreeAdapter);
 };
 
 }  // namespace gtk_tree
 
 #endif  // CHROME_BROWSER_UI_GTK_GTK_TREE_H_