Remove more oilpan.

sky/engine/core/css/resolver/StyleResolver.h

Index: sky/engine/core/css/resolver/StyleResolver.h
diff --git a/sky/engine/core/css/resolver/StyleResolver.h b/sky/engine/core/css/resolver/StyleResolver.h
index f0d7e0b974dd0bcf787470f0be43892250a65dbf..4f9052be2d51602e6e2725500d956f8d4ce2ded6 100644
--- a/sky/engine/core/css/resolver/StyleResolver.h
+++ b/sky/engine/core/css/resolver/StyleResolver.h
@@ -92,8 +92,8 @@ public:
 };
 
 // This class selects a RenderStyle for a given element based on a collection of stylesheets.
-class StyleResolver final : public DummyBase<StyleResolver> {
-    WTF_MAKE_NONCOPYABLE(StyleResolver); WTF_MAKE_FAST_ALLOCATED_WILL_BE_REMOVED;
+class StyleResolver final {
+    WTF_MAKE_NONCOPYABLE(StyleResolver); WTF_MAKE_FAST_ALLOCATED;
 public:
     explicit StyleResolver(Document&);
     virtual ~StyleResolver();