replace OVERRIDE and FINAL with override and final in ash/

ash/system/chromeos/virtual_keyboard/virtual_keyboard_tray.h

Index: ash/system/chromeos/virtual_keyboard/virtual_keyboard_tray.h
diff --git a/ash/system/chromeos/virtual_keyboard/virtual_keyboard_tray.h b/ash/system/chromeos/virtual_keyboard/virtual_keyboard_tray.h
index 8f0e2bbef46e5f0ae73859eba00b03302b54de2c..fc70edec3aa2aa8e3564ca20effb341b8c2a68d1 100644
--- a/ash/system/chromeos/virtual_keyboard/virtual_keyboard_tray.h
+++ b/ash/system/chromeos/virtual_keyboard/virtual_keyboard_tray.h
@@ -26,20 +26,20 @@ class VirtualKeyboardTray : public TrayBackgroundView,
   virtual ~VirtualKeyboardTray();
 
   // TrayBackgroundView:
-  virtual void SetShelfAlignment(ShelfAlignment alignment) OVERRIDE;
-  virtual base::string16 GetAccessibleNameForTray() OVERRIDE;
+  virtual void SetShelfAlignment(ShelfAlignment alignment) override;
+  virtual base::string16 GetAccessibleNameForTray() override;
   virtual void HideBubbleWithView(
-      const views::TrayBubbleView* bubble_view) OVERRIDE;
-  virtual bool ClickedOutsideBubble() OVERRIDE;
-  virtual bool PerformAction(const ui::Event& event) OVERRIDE;
+      const views::TrayBubbleView* bubble_view) override;
+  virtual bool ClickedOutsideBubble() override;
+  virtual bool PerformAction(const ui::Event& event) override;
 
   // views::ButtonListener:
   virtual void ButtonPressed(views::Button* sender,
-                             const ui::Event& event) OVERRIDE;
+                             const ui::Event& event) override;
 
   // AccessibilityObserver:
   virtual void OnAccessibilityModeChanged(
-      AccessibilityNotificationVisibility notify) OVERRIDE;
+      AccessibilityNotificationVisibility notify) override;
 
  private:
   views::ImageButton* button_;  // Not owned.