Standardize usage of virtual/override/final specifiers.

ui/aura/test/event_generator_delegate_aura.cc

Index: ui/aura/test/event_generator_delegate_aura.cc
diff --git a/ui/aura/test/event_generator_delegate_aura.cc b/ui/aura/test/event_generator_delegate_aura.cc
index 576cc8e184d4e21d0f34b0b2c02053f8317eaeb5..f1158dab8fc8352ca3016790942c7ca5884dbd26 100644
--- a/ui/aura/test/event_generator_delegate_aura.cc
+++ b/ui/aura/test/event_generator_delegate_aura.cc
@@ -20,18 +20,18 @@ class DefaultEventGeneratorDelegate : public EventGeneratorDelegateAura {
   }
 
   // EventGeneratorDelegate:
-  virtual void SetContext(ui::test::EventGenerator* owner,
-                          gfx::NativeWindow root_window,
-                          gfx::NativeWindow window) override {
+  void SetContext(ui::test::EventGenerator* owner,
+                  gfx::NativeWindow root_window,
+                  gfx::NativeWindow window) override {
     root_window_ = root_window;
   }
 
   // EventGeneratorDelegateAura:
-  virtual WindowTreeHost* GetHostAt(const gfx::Point& point) const override {
+  WindowTreeHost* GetHostAt(const gfx::Point& point) const override {
     return root_window_->GetHost();
   }
 
-  virtual client::ScreenPositionClient* GetScreenPositionClient(
+  client::ScreenPositionClient* GetScreenPositionClient(
       const aura::Window* window) const override {
     return NULL;
   }
@@ -44,7 +44,7 @@ class DefaultEventGeneratorDelegate : public EventGeneratorDelegateAura {
     ui::test::EventGenerator::default_delegate = this;
   }
 
-  virtual ~DefaultEventGeneratorDelegate() {
+  ~DefaultEventGeneratorDelegate() override {
     DCHECK_EQ(this, ui::test::EventGenerator::default_delegate);
     ui::test::EventGenerator::default_delegate = NULL;
   }