remove some new OVERRIDE instances in ui/

ui/app_list/cocoa/apps_grid_controller.mm

 // 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.
 
 #import "ui/app_list/cocoa/apps_grid_controller.h"
 
 #include "base/mac/foundation_util.h"
 #include "ui/app_list/app_list_item.h"
 #include "ui/app_list/app_list_model.h"
 #include "ui/app_list/app_list_model_observer.h"
@@ skipping 93 matching lines @@
   }
   virtual void OnListItemRemoved(size_t index, AppListItem* item) override {
     [parent_ listItemRemoved:index];
   }
   virtual void OnListItemMoved(size_t from_index,
                                size_t to_index,
                                AppListItem* item) override {
     [parent_ listItemMovedFromIndex:from_index
                        toModelIndex:to_index];
   }
-  virtual void OnAppListItemHighlight(size_t index, bool highlight) OVERRIDE {
+  virtual void OnAppListItemHighlight(size_t index, bool highlight) override {
     // NSCollectionView (or -[AppsGridController scrollToPage]) ensures only one
     // item is highlighted, so clearing a highlight isn't necessary.
     if (!highlight)
       return;
 
     [parent_ selectItemAtIndex:index];
     [parent_ scrollToPage:index / kItemsPerPage];
   }
 
   AppsGridController* parent_;  // Weak, owns us.
@@ skipping 550 matching lines @@
     return [self moveSelectionByDelta:-kItemsPerPage];
 
   if (command == @selector(pageDown:) ||
       command == @selector(scrollPageDown:))
     return [self moveSelectionByDelta:kItemsPerPage];
 
   return NO;
 }
 
 @end