Update web classes to use OVERRIDE / FINAL when needed

Source/web/EventListenerWrapper.h

Index: Source/web/EventListenerWrapper.h
diff --git a/Source/web/EventListenerWrapper.h b/Source/web/EventListenerWrapper.h
index 8b77270700b6fc2a9b9b12dcc7aeb6dd4bf7ea18..1b5007e5e23f655e38f368be5821735b95285b6f 100644
--- a/Source/web/EventListenerWrapper.h
+++ b/Source/web/EventListenerWrapper.h
@@ -43,13 +43,13 @@ class WebDOMEventListener;
 
 // FIXME: Remove the DeprecatedEventListenerWrapper class below once Chromium
 // switched to using WebDOMEvent.
-class EventListenerWrapper : public WebCore::EventListener {
+class EventListenerWrapper FINAL : public WebCore::EventListener {
 public:
     EventListenerWrapper(WebDOMEventListener*);
-    ~EventListenerWrapper();
+    virtual ~EventListenerWrapper();
 
-    virtual bool operator==(const WebCore::EventListener&);
-    virtual void handleEvent(WebCore::ExecutionContext*, WebCore::Event*);
+    virtual bool operator==(const WebCore::EventListener&) OVERRIDE;
+    virtual void handleEvent(WebCore::ExecutionContext*, WebCore::Event*) OVERRIDE;
 
     void webDOMEventListenerDeleted();