Update WTF classes to use OVERRIDE / FINAL when needed

Source/wtf/Uint16Array.h

Index: Source/wtf/Uint16Array.h
diff --git a/Source/wtf/Uint16Array.h b/Source/wtf/Uint16Array.h
index 0f41c62f8f3f4bff53e5e6b123dbb8b04a9e0174..4801297bb027a72e55104fc8926054ff186f28f2 100644
--- a/Source/wtf/Uint16Array.h
+++ b/Source/wtf/Uint16Array.h
@@ -33,7 +33,7 @@ namespace WTF {
 
 class ArrayBuffer;
 
-class Uint16Array : public IntegralTypedArrayBase<unsigned short> {
+class Uint16Array FINAL : public IntegralTypedArrayBase<unsigned short> {
 public:
     static inline PassRefPtr<Uint16Array> create(unsigned length);
     static inline PassRefPtr<Uint16Array> create(const unsigned short* array, unsigned length);
@@ -49,7 +49,7 @@ public:
     inline PassRefPtr<Uint16Array> subarray(int start) const;
     inline PassRefPtr<Uint16Array> subarray(int start, int end) const;
 
-    virtual ViewType getType() const
+    virtual ViewType getType() const OVERRIDE
     {
         return TypeUint16;
     }