Standardize usage of virtual/override/final in chrome/browser/ui/

chrome/browser/ui/cocoa/hung_renderer_controller.mm

Index: chrome/browser/ui/cocoa/hung_renderer_controller.mm
diff --git a/chrome/browser/ui/cocoa/hung_renderer_controller.mm b/chrome/browser/ui/cocoa/hung_renderer_controller.mm
index 3cc2e6cf10173a9a7c5c5ab8858060369572eea3..125939bb9cc9c4a18b103e02a3748d4c007dc541 100644
--- a/chrome/browser/ui/cocoa/hung_renderer_controller.mm
+++ b/chrome/browser/ui/cocoa/hung_renderer_controller.mm
@@ -46,12 +46,10 @@ class HungRendererWebContentsObserverBridge
 
  protected:
   // WebContentsObserver overrides:
-  virtual void RenderProcessGone(base::TerminationStatus status) override {
-    [controller_ renderProcessGone];
-  }
-  virtual void WebContentsDestroyed() override {
+  void RenderProcessGone(base::TerminationStatus status) override {
     [controller_ renderProcessGone];
   }
+  void WebContentsDestroyed() override { [controller_ renderProcessGone]; }
 
  private:
   HungRendererController* controller_;  // weak