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

Source/core/css/resolver/StyleResolver.h

Index: Source/core/css/resolver/StyleResolver.h
diff --git a/Source/core/css/resolver/StyleResolver.h b/Source/core/css/resolver/StyleResolver.h
index b8025866e668048f239cbbed253321779428f2db..7470c15bf6e9599d1b85a5e009a06ae78072b174 100644
--- a/Source/core/css/resolver/StyleResolver.h
+++ b/Source/core/css/resolver/StyleResolver.h
@@ -90,7 +90,7 @@ public:
 };
 
 // This class selects a RenderStyle for a given element based on a collection of stylesheets.
-class StyleResolver FINAL : public NoBaseWillBeGarbageCollectedFinalized<StyleResolver> {
+class StyleResolver final : public NoBaseWillBeGarbageCollectedFinalized<StyleResolver> {
     WTF_MAKE_NONCOPYABLE(StyleResolver); WTF_MAKE_FAST_ALLOCATED_WILL_BE_REMOVED;
 public:
     explicit StyleResolver(Document&);