replace OVERRIDE and FINAL with override and final in ash/

ash/host/ash_window_tree_host_x11_unittest.cc

Index: ash/host/ash_window_tree_host_x11_unittest.cc
diff --git a/ash/host/ash_window_tree_host_x11_unittest.cc b/ash/host/ash_window_tree_host_x11_unittest.cc
index dad98cba6faaf8373286dfa1629a22fdcd8f7b5b..14642daf7f56d4d20bf06c6287863186867f16e0 100644
--- a/ash/host/ash_window_tree_host_x11_unittest.cc
+++ b/ash/host/ash_window_tree_host_x11_unittest.cc
@@ -32,7 +32,7 @@ class RootWindowEventHandler : public ui::EventHandler {
   virtual ~RootWindowEventHandler() { target_->RemovePreTargetHandler(this); }
 
   // ui::EventHandler:
-  virtual void OnTouchEvent(ui::TouchEvent* event) OVERRIDE {
+  virtual void OnTouchEvent(ui::TouchEvent* event) override {
     last_touch_id_ = event->touch_id();
     last_touch_type_ = event->type();
     last_touch_location_ = event->location();
@@ -59,7 +59,7 @@ namespace ash {
 
 class AshWindowTreeHostX11Test : public aura::test::AuraTestBase {
  public:
-  virtual void SetUp() OVERRIDE {
+  virtual void SetUp() override {
     aura::test::AuraTestBase::SetUp();
 
 #if defined(OS_CHROMEOS)
@@ -69,7 +69,7 @@ class AshWindowTreeHostX11Test : public aura::test::AuraTestBase {
 #endif
   }
 
-  virtual void TearDown() OVERRIDE {
+  virtual void TearDown() override {
     aura::test::AuraTestBase::TearDown();
 
 #if defined(OS_CHROMEOS)