Make blink classes and structures in core/css fast-allocated

Source/core/css/resolver/CSSPropertyPriority.h

Index: Source/core/css/resolver/CSSPropertyPriority.h
diff --git a/Source/core/css/resolver/CSSPropertyPriority.h b/Source/core/css/resolver/CSSPropertyPriority.h
index 3edca213d50cd3e52a5cf24fa10f37dfbe22fccb..3db693feb1c75419792c596e810d59de578bcfd2 100644
--- a/Source/core/css/resolver/CSSPropertyPriority.h
+++ b/Source/core/css/resolver/CSSPropertyPriority.h
@@ -6,6 +6,7 @@
 #define CSSPropertyPriority_h
 
 #include "core/CSSPropertyNames.h"
+#include "wtf/Allocator.h"
 
 namespace blink {
 
@@ -20,6 +21,7 @@ enum CSSPropertyPriority {
 
 template <CSSPropertyPriority priority>
 class CSSPropertyPriorityData {
+    STATIC_ONLY(CSSPropertyPriorityData);
 public:
     static inline CSSPropertyID first();
     static inline CSSPropertyID last();