Refactor RuleFeatureSet to simplify iteration over CSS Selectors when collecting data.

Source/core/dom/shadow/SelectRuleFeatureSet.h

Index: Source/core/dom/shadow/SelectRuleFeatureSet.h
diff --git a/Source/core/dom/shadow/SelectRuleFeatureSet.h b/Source/core/dom/shadow/SelectRuleFeatureSet.h
index 429d2777699c1c3b5d92eeebadd456f3dc911a89..fd20c98e2de0fbabfd2a3d45df1916cf48cac62b 100644
--- a/Source/core/dom/shadow/SelectRuleFeatureSet.h
+++ b/Source/core/dom/shadow/SelectRuleFeatureSet.h
@@ -68,19 +68,19 @@ private:
 inline bool SelectRuleFeatureSet::hasSelectorForId(const AtomicString& idValue) const
 {
     ASSERT(!idValue.isEmpty());
-    return m_cssRuleFeatureSet.idsInRules.contains(idValue);
+    return m_cssRuleFeatureSet.hasSelectorForId(idValue);
 }
 
 inline bool SelectRuleFeatureSet::hasSelectorForClass(const AtomicString& classValue) const
 {
     ASSERT(!classValue.isEmpty());
-    return m_cssRuleFeatureSet.classesInRules.contains(classValue);
+    return m_cssRuleFeatureSet.hasSelectorForClass(classValue);
 }
 
 inline bool SelectRuleFeatureSet::hasSelectorForAttribute(const AtomicString& attributeName) const
 {
     ASSERT(!attributeName.isEmpty());
-    return m_cssRuleFeatureSet.attrsInRules.contains(attributeName);
+    return m_cssRuleFeatureSet.hasSelectorForAttribute(attributeName);
 }
 
 }