replace OVERRIDE and FINAL with override and final in ash/

ash/ash_touch_exploration_manager_chromeos.h

Index: ash/ash_touch_exploration_manager_chromeos.h
diff --git a/ash/ash_touch_exploration_manager_chromeos.h b/ash/ash_touch_exploration_manager_chromeos.h
index bce2a52991acb1b9359698d449502ce5d01d59c8..817f242765867855229a05d34da4cb673c2c6dd0 100644
--- a/ash/ash_touch_exploration_manager_chromeos.h
+++ b/ash/ash_touch_exploration_manager_chromeos.h
@@ -30,15 +30,15 @@ class ASH_EXPORT AshTouchExplorationManager
 
   // AccessibilityObserver overrides:
   virtual void OnAccessibilityModeChanged(
-      AccessibilityNotificationVisibility notify) OVERRIDE;
+      AccessibilityNotificationVisibility notify) override;
 
   // TouchExplorationControllerDelegate overrides:
-  virtual void SetOutputLevel(int volume) OVERRIDE;
-  virtual void SilenceSpokenFeedback() OVERRIDE;
-  virtual void PlayVolumeAdjustEarcon() OVERRIDE;
-  virtual void PlayPassthroughEarcon() OVERRIDE;
-  virtual void PlayExitScreenEarcon() OVERRIDE;
-  virtual void PlayEnterScreenEarcon() OVERRIDE;
+  virtual void SetOutputLevel(int volume) override;
+  virtual void SilenceSpokenFeedback() override;
+  virtual void PlayVolumeAdjustEarcon() override;
+  virtual void PlayPassthroughEarcon() override;
+  virtual void PlayExitScreenEarcon() override;
+  virtual void PlayEnterScreenEarcon() override;
 
  private:
   void UpdateTouchExplorationState();