replace OVERRIDE and FINAL with override and final in ash/

ash/shell/content_client/shell_browser_main_parts.cc

Index: ash/shell/content_client/shell_browser_main_parts.cc
diff --git a/ash/shell/content_client/shell_browser_main_parts.cc b/ash/shell/content_client/shell_browser_main_parts.cc
index 6cdc1147a4959b17cef4d47beb0fbabd5b779cd5..c41c0301d7093ee23edbefedb3d5e6448e7ee895 100644
--- a/ash/shell/content_client/shell_browser_main_parts.cc
+++ b/ash/shell/content_client/shell_browser_main_parts.cc
@@ -55,12 +55,12 @@ class ShellViewsDelegate : public views::TestViewsDelegate {
 
   // Overridden from views::TestViewsDelegate:
   virtual views::NonClientFrameView* CreateDefaultNonClientFrameView(
-      views::Widget* widget) OVERRIDE {
+      views::Widget* widget) override {
     return ash::Shell::GetInstance()->CreateDefaultNonClientFrameView(widget);
   }
   virtual void OnBeforeWidgetInit(
       views::Widget::InitParams* params,
-      views::internal::NativeWidgetDelegate* delegate) OVERRIDE {
+      views::internal::NativeWidgetDelegate* delegate) override {
     if (params->opacity == views::Widget::InitParams::INFER_OPACITY)
       params->opacity = views::Widget::InitParams::TRANSLUCENT_WINDOW;