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

Source/wtf/FilePrintStream.h

Index: Source/wtf/FilePrintStream.h
diff --git a/Source/wtf/FilePrintStream.h b/Source/wtf/FilePrintStream.h
index 441577f9d51b5d83a7029da8f50e3fb3e2e87d43..db0b51f70c616d86c5a1012ea1ce62132e29a932 100644
--- a/Source/wtf/FilePrintStream.h
+++ b/Source/wtf/FilePrintStream.h
@@ -32,7 +32,7 @@
 
 namespace WTF {
 
-class WTF_EXPORT FilePrintStream FINAL : public PrintStream {
+class WTF_EXPORT FilePrintStream final : public PrintStream {
 public:
     enum AdoptionMode {
         Adopt,
@@ -46,8 +46,8 @@ public:
 
     FILE* file() { return m_file; }
 
-    virtual void vprintf(const char* format, va_list) OVERRIDE WTF_ATTRIBUTE_PRINTF(2, 0);
-    virtual void flush() OVERRIDE;
+    virtual void vprintf(const char* format, va_list) override WTF_ATTRIBUTE_PRINTF(2, 0);
+    virtual void flush() override;
 
 private:
     FILE* m_file;