Replace FINAL and OVERRIDE with their C++11 counterparts in Source/core/[css|rendering|clipboard]

Source/core/css/FontFaceSetLoadEvent.h

Index: Source/core/css/FontFaceSetLoadEvent.h
diff --git a/Source/core/css/FontFaceSetLoadEvent.h b/Source/core/css/FontFaceSetLoadEvent.h
index 20bea801ebc2aa6a40d96826028e15939eb8839a..06990f37e8df72974b0afb93465a0d314a6cbf3a 100644
--- a/Source/core/css/FontFaceSetLoadEvent.h
+++ b/Source/core/css/FontFaceSetLoadEvent.h
@@ -43,7 +43,7 @@ struct FontFaceSetLoadEventInit : public EventInit {
     FontFaceArray fontfaces;
 };
 
-class FontFaceSetLoadEvent FINAL : public Event {
+class FontFaceSetLoadEvent final : public Event {
     DEFINE_WRAPPERTYPEINFO();
 public:
     static PassRefPtrWillBeRawPtr<FontFaceSetLoadEvent> create()
@@ -65,9 +65,9 @@ public:
 
     FontFaceArray fontfaces() const { return m_fontfaces; }
 
-    virtual const AtomicString& interfaceName() const OVERRIDE;
+    virtual const AtomicString& interfaceName() const override;
 
-    virtual void trace(Visitor*) OVERRIDE;
+    virtual void trace(Visitor*) override;
 
 private:
     FontFaceSetLoadEvent();