Update bindings classes to use OVERRIDE / FINAL when needed

Source/bindings/v8/V8CustomElementLifecycleCallbacks.h

Index: Source/bindings/v8/V8CustomElementLifecycleCallbacks.h
diff --git a/Source/bindings/v8/V8CustomElementLifecycleCallbacks.h b/Source/bindings/v8/V8CustomElementLifecycleCallbacks.h
index b3c9f15e8d8d5c19093e4e3c2e944737d69e3a1d..f784154975168cd0b100fbfea8eb52a122a98cd3 100644
--- a/Source/bindings/v8/V8CustomElementLifecycleCallbacks.h
+++ b/Source/bindings/v8/V8CustomElementLifecycleCallbacks.h
@@ -46,7 +46,7 @@ class Element;
 class ExecutionContext;
 class V8PerContextData;
 
-class V8CustomElementLifecycleCallbacks : public CustomElementLifecycleCallbacks, ContextLifecycleObserver {
+class V8CustomElementLifecycleCallbacks FINAL : public CustomElementLifecycleCallbacks, ContextLifecycleObserver {
 public:
     static PassRefPtr<V8CustomElementLifecycleCallbacks> create(ExecutionContext*, v8::Handle<v8::Object> prototype, v8::Handle<v8::Function> created, v8::Handle<v8::Function> attached, v8::Handle<v8::Function> detached, v8::Handle<v8::Function> attributeChanged);