1 files changed, 3 insertions, 4 deletions
diff --git a/Source/WebCore/css/RuleFeature.h b/Source/WebCore/css/RuleFeature.h
index 5f16288c0..ce6d04e66 100644
--- a/Source/WebCore/css/RuleFeature.h
+++ b/Source/WebCore/css/RuleFeature.h
@@ -31,8 +31,7 @@ namespace WebCore {
 
 class StyleRule;
 
-class RuleFeature {
-public:
+struct RuleFeature {
     RuleFeature(StyleRule* rule, unsigned selectorIndex, bool hasDocumentSecurityOrigin)
         : rule(rule)
         , selectorIndex(selectorIndex)
@@ -44,8 +43,7 @@ public:
     bool hasDocumentSecurityOrigin;
 };
 
-class RuleFeatureSet {
-public:
+struct RuleFeatureSet {
     RuleFeatureSet()
         : usesFirstLineRules(false)
         , usesBeforeAfterRules(false)
@@ -55,6 +53,7 @@ public:
     void clear();
     void reportMemoryUsage(MemoryObjectInfo*) const;
     HashSet<AtomicStringImpl*> idsInRules;
+    HashSet<AtomicStringImpl*> classesInRules;
     HashSet<AtomicStringImpl*> attrsInRules;
     Vector<RuleFeature> siblingRules;
     Vector<RuleFeature> uncommonAttributeRules;