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

Source/core/frame/Navigator.h

Index: Source/core/frame/Navigator.h
diff --git a/Source/core/frame/Navigator.h b/Source/core/frame/Navigator.h
index 1a64e503947f636368d1ccb8c13b0f90e850e1e7..46a4b85b6e4ceb4b446f56e6c1d60aac5ab7029c 100644
--- a/Source/core/frame/Navigator.h
+++ b/Source/core/frame/Navigator.h
@@ -38,7 +38,7 @@ class PluginData;
 
 typedef int ExceptionCode;
 
-class Navigator : public NavigatorBase, public ScriptWrappable, public RefCounted<Navigator>, public DOMWindowProperty, public Supplementable<Navigator> {
+class Navigator FINAL : public NavigatorBase, public ScriptWrappable, public RefCounted<Navigator>, public DOMWindowProperty, public Supplementable<Navigator> {
 public:
     static PassRefPtr<Navigator> create(Frame* frame) { return adoptRef(new Navigator(frame)); }
     virtual ~Navigator();