Update page & frame classes to use OVERRIDE / FINAL when needed

Source/core/frame/Screen.h

Index: Source/core/frame/Screen.h
diff --git a/Source/core/frame/Screen.h b/Source/core/frame/Screen.h
index 7b2036b677ec30283a8d14fa6df2bef5b30f9475..b9ce445318b6a981a76c788fdd9474a26faab420 100644
--- a/Source/core/frame/Screen.h
+++ b/Source/core/frame/Screen.h
@@ -39,7 +39,7 @@ namespace WebCore {
 
     class Frame;
 
-    class Screen : public ScriptWrappable, public RefCounted<Screen>, public DOMWindowProperty {
+    class Screen FINAL : public ScriptWrappable, public RefCounted<Screen>, public DOMWindowProperty {
     public:
         static PassRefPtr<Screen> create(Frame *frame) { return adoptRef(new Screen(frame)); }