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

Source/core/css/CSSCanvasValue.h

Index: Source/core/css/CSSCanvasValue.h
diff --git a/Source/core/css/CSSCanvasValue.h b/Source/core/css/CSSCanvasValue.h
index ffc82f357db404aaa3b7164633c0d56926ba7a5c..f00375d34769e7df5640c2a60c98697832d4c349 100644
--- a/Source/core/css/CSSCanvasValue.h
+++ b/Source/core/css/CSSCanvasValue.h
@@ -65,26 +65,26 @@ private:
 
     // NOTE: We put the CanvasObserver in a member instead of inheriting from it
     // to avoid adding a vptr to CSSCanvasValue.
-    class CanvasObserverProxy FINAL : public NoBaseWillBeGarbageCollected<CanvasObserverProxy>, public CanvasObserver {
+    class CanvasObserverProxy final : public NoBaseWillBeGarbageCollected<CanvasObserverProxy>, public CanvasObserver {
         WILL_BE_USING_GARBAGE_COLLECTED_MIXIN(CanvasObserverProxy);
     public:
         explicit CanvasObserverProxy(CSSCanvasValue* ownerValue) : m_ownerValue(ownerValue) { }
 
-        virtual void canvasChanged(HTMLCanvasElement* canvas, const FloatRect& changedRect) OVERRIDE
+        virtual void canvasChanged(HTMLCanvasElement* canvas, const FloatRect& changedRect) override
         {
             m_ownerValue->canvasChanged(canvas, changedRect);
         }
-        virtual void canvasResized(HTMLCanvasElement* canvas) OVERRIDE
+        virtual void canvasResized(HTMLCanvasElement* canvas) override
         {
             m_ownerValue->canvasResized(canvas);
         }
 #if !ENABLE(OILPAN)
-        virtual void canvasDestroyed(HTMLCanvasElement* canvas) OVERRIDE
+        virtual void canvasDestroyed(HTMLCanvasElement* canvas) override
         {
             m_ownerValue->canvasDestroyed(canvas);
         }
 #endif
-        virtual void trace(Visitor* visitor) OVERRIDE
+        virtual void trace(Visitor* visitor) override
         {
             visitor->trace(m_ownerValue);
             CanvasObserver::trace(visitor);