replace OVERRIDE and FINAL with override and final in ash/

ash/accelerators/magnifier_key_scroller_unittest.cc

Index: ash/accelerators/magnifier_key_scroller_unittest.cc
diff --git a/ash/accelerators/magnifier_key_scroller_unittest.cc b/ash/accelerators/magnifier_key_scroller_unittest.cc
index 9de8c9557e1ba8552449ee7d97fd2632d20e4489..c8670a70dce21f09c5ebe89d295fb62077b4b90c 100644
--- a/ash/accelerators/magnifier_key_scroller_unittest.cc
+++ b/ash/accelerators/magnifier_key_scroller_unittest.cc
@@ -20,7 +20,7 @@ class KeyEventDelegate : public aura::test::TestWindowDelegate {
   virtual ~KeyEventDelegate() {}
 
   // ui::EventHandler overrides:
-  virtual void OnKeyEvent(ui::KeyEvent* event) OVERRIDE {
+  virtual void OnKeyEvent(ui::KeyEvent* event) override {
     key_event.reset(new ui::KeyEvent(
         event->type(), event->key_code(), event->flags()));
   }