replace OVERRIDE and FINAL with override and final in ash/

ash/system/tray/tray_image_item.h

Index: ash/system/tray/tray_image_item.h
diff --git a/ash/system/tray/tray_image_item.h b/ash/system/tray/tray_image_item.h
index 6fad95f3a8294b6b236ed06433d2f67294c9b9f8..a3f9d9d0c75b911626fc4953927c3adcdb801442 100644
--- a/ash/system/tray/tray_image_item.h
+++ b/ash/system/tray/tray_image_item.h
@@ -28,15 +28,15 @@ class TrayImageItem : public SystemTrayItem {
   virtual bool GetInitialVisibility() = 0;
 
   // Overridden from SystemTrayItem.
-  virtual views::View* CreateTrayView(user::LoginStatus status) OVERRIDE;
-  virtual views::View* CreateDefaultView(user::LoginStatus status) OVERRIDE;
-  virtual views::View* CreateDetailedView(user::LoginStatus status) OVERRIDE;
-  virtual void DestroyTrayView() OVERRIDE;
-  virtual void DestroyDefaultView() OVERRIDE;
-  virtual void DestroyDetailedView() OVERRIDE;
-  virtual void UpdateAfterLoginStatusChange(user::LoginStatus status) OVERRIDE;
+  virtual views::View* CreateTrayView(user::LoginStatus status) override;
+  virtual views::View* CreateDefaultView(user::LoginStatus status) override;
+  virtual views::View* CreateDetailedView(user::LoginStatus status) override;
+  virtual void DestroyTrayView() override;
+  virtual void DestroyDefaultView() override;
+  virtual void DestroyDetailedView() override;
+  virtual void UpdateAfterLoginStatusChange(user::LoginStatus status) override;
   virtual void UpdateAfterShelfAlignmentChange(
-      ShelfAlignment alignment) OVERRIDE;
+      ShelfAlignment alignment) override;
 
  private:
   // Set the alignment of the image depending on the shelf alignment.