CSS: RuleFeature::clear clears all invalidation sets

third_party/WebKit/Source/core/css/RuleFeature.cpp

Index: third_party/WebKit/Source/core/css/RuleFeature.cpp
diff --git a/third_party/WebKit/Source/core/css/RuleFeature.cpp b/third_party/WebKit/Source/core/css/RuleFeature.cpp
index 74858be47922ebf4b50fb5adf7876c7048affe59..5359c6390f1e029033c3ade292482dae27106b35 100644
--- a/third_party/WebKit/Source/core/css/RuleFeature.cpp
+++ b/third_party/WebKit/Source/core/css/RuleFeature.cpp
@@ -742,6 +742,8 @@ void RuleFeatureSet::clear()
     m_attributeInvalidationSets.clear();
     m_idInvalidationSets.clear();
     m_pseudoInvalidationSets.clear();
+    m_universalSiblingInvalidationSet.clear();
+    m_nthInvalidationSet.clear();
 }
 
 void RuleFeatureSet::collectInvalidationSetsForClass(InvalidationLists& invalidationLists, Element& element, const AtomicString& className) const