Use macros instead of specializing VectorTraits explicitly

Source/core/css/RuleSet.h

Index: Source/core/css/RuleSet.h
diff --git a/Source/core/css/RuleSet.h b/Source/core/css/RuleSet.h
index f319a9756237659b169521a50b42cda64c4c0b0b..b73e64994b8116d0a0a09c539e7e0cdc8c09c47c 100644
--- a/Source/core/css/RuleSet.h
+++ b/Source/core/css/RuleSet.h
@@ -235,18 +235,7 @@ private:
 
 } // namespace WebCore
 
-namespace WTF {
-
-template <> struct VectorTraits<WebCore::RuleData> : VectorTraitsBase<WebCore::RuleData> {
-    static const bool canInitializeWithMemset = true;
-    static const bool canMoveWithMemcpy = true;
-};
-
-template <> struct VectorTraits<WebCore::MinimalRuleData> : VectorTraitsBase<WebCore::MinimalRuleData> {
-    static const bool canInitializeWithMemset = true;
-    static const bool canMoveWithMemcpy = true;
-};
-
-}
+WTF_ALLOW_MOVE_AND_INIT_WITH_MEM_FUNCTIONS(WebCore::RuleData);
+WTF_ALLOW_MOVE_AND_INIT_WITH_MEM_FUNCTIONS(WebCore::MinimalRuleData);
 
 #endif // RuleSet_h