Update bindings classes to use OVERRIDE / FINAL when needed

Source/bindings/v8/custom/V8CustomXPathNSResolver.h

Index: Source/bindings/v8/custom/V8CustomXPathNSResolver.h
diff --git a/Source/bindings/v8/custom/V8CustomXPathNSResolver.h b/Source/bindings/v8/custom/V8CustomXPathNSResolver.h
index aa3e01a243da5d020ee31797d872acb2e639366b..c97bf088eab8c0c4ba55a957516ecbbc4d29b0d0 100644
--- a/Source/bindings/v8/custom/V8CustomXPathNSResolver.h
+++ b/Source/bindings/v8/custom/V8CustomXPathNSResolver.h
@@ -42,7 +42,7 @@ namespace WebCore {
 // V8CustomXPathNSResolver does not create a persistent handle to the
 // given resolver object.  So the lifetime of V8CustomXPathNSResolver
 // must not exceed the lifetime of the passed handle.
-class V8CustomXPathNSResolver : public XPathNSResolver {
+class V8CustomXPathNSResolver FINAL : public XPathNSResolver {
 public:
     static PassRefPtr<V8CustomXPathNSResolver> create(v8::Handle<v8::Object> resolver, v8::Isolate*);