Introduce TerminatedArray<T> type to make data-structure used by RuleSet visible at the type level.

Source/core/css/ElementRuleCollector.h

Index: Source/core/css/ElementRuleCollector.h
diff --git a/Source/core/css/ElementRuleCollector.h b/Source/core/css/ElementRuleCollector.h
index 91426b0aa775f4b1876511e1dddb7038f3740945..088b2d7e17b220be145c9750135055027d4a664a 100644
--- a/Source/core/css/ElementRuleCollector.h
+++ b/Source/core/css/ElementRuleCollector.h
@@ -115,8 +115,17 @@ public:
 
 private:
     void collectRuleIfMatches(const RuleData&, SelectorChecker::BehaviorAtBoundary, CascadeScope, CascadeOrder, const MatchRequest&, RuleRange&);
-    void collectMatchingRulesForList(const Vector<RuleData>*, SelectorChecker::BehaviorAtBoundary, CascadeScope, CascadeOrder, const MatchRequest&, RuleRange&);
-    void collectMatchingRulesForList(const RuleData*, SelectorChecker::BehaviorAtBoundary, CascadeScope, CascadeOrder, const MatchRequest&, RuleRange&);
+
+    template<typename RuleDataListType>
+    void collectMatchingRulesForList(const RuleDataListType* rules, SelectorChecker::BehaviorAtBoundary behaviorAtBoundary, CascadeScope cascadeScope, CascadeOrder cascadeOrder, const MatchRequest& matchRequest, RuleRange& ruleRange)
+    {
+        if (!rules)
+            return;
+
+        for (typename RuleDataListType::const_iterator it = rules->begin(), end = rules->end(); it != end; ++it)
+            collectRuleIfMatches(*it, behaviorAtBoundary, cascadeScope, cascadeOrder, matchRequest, ruleRange);
+    }
+
     bool ruleMatches(const RuleData&, const ContainerNode* scope, SelectorChecker::BehaviorAtBoundary, SelectorChecker::MatchResult*);
 
     CSSRuleList* nestedRuleList(CSSRule*);