Replace OVERRIDE and FINAL with their C++11 counterparts in WTF

Source/wtf/Float64Array.h

Index: Source/wtf/Float64Array.h
diff --git a/Source/wtf/Float64Array.h b/Source/wtf/Float64Array.h
index c3dae189cfcb6bfee45b6297dc60a99dd4efce56..b6c1ce3f4feae50b62cc71fab8394d75f00f86c4 100644
--- a/Source/wtf/Float64Array.h
+++ b/Source/wtf/Float64Array.h
@@ -32,7 +32,7 @@
 
 namespace WTF {
 
-class Float64Array FINAL : public TypedArrayBase<double> {
+class Float64Array final : public TypedArrayBase<double> {
 public:
     static inline PassRefPtr<Float64Array> create(unsigned length);
     static inline PassRefPtr<Float64Array> create(const double* array, unsigned length);
@@ -54,7 +54,7 @@ public:
     inline PassRefPtr<Float64Array> subarray(int start) const;
     inline PassRefPtr<Float64Array> subarray(int start, int end) const;
 
-    virtual ViewType type() const OVERRIDE
+    virtual ViewType type() const override
     {
         return TypeFloat64;
     }