Apply RuleSet changes for active stylesheet changes.

third_party/WebKit/Source/core/dom/StyleEngine.cpp

Index: third_party/WebKit/Source/core/dom/StyleEngine.cpp
diff --git a/third_party/WebKit/Source/core/dom/StyleEngine.cpp b/third_party/WebKit/Source/core/dom/StyleEngine.cpp
index 0f028a7cb1d32cb7c4f797b6acb2aca4262d3bb4..a3c3a07a7f6ca8bd8e8f581d4d2f3993b168899a 100644
--- a/third_party/WebKit/Source/core/dom/StyleEngine.cpp
+++ b/third_party/WebKit/Source/core/dom/StyleEngine.cpp
@@ -815,7 +815,7 @@ void StyleEngine::scheduleNthPseudoInvalidations(ContainerNode& nthParent) {
 
 void StyleEngine::scheduleRuleSetInvalidationsForElement(
     Element& element,
-    const HeapVector<Member<const RuleSet>>& ruleSets) {
+    const HeapVector<Member<RuleSet>>& ruleSets) {
   AtomicString id;
   const SpaceSplitString* classNames = nullptr;
 
@@ -858,7 +858,7 @@ void StyleEngine::invalidateSlottedElements(HTMLSlotElement& slot) {
 
 void StyleEngine::scheduleInvalidationsForRuleSets(
     TreeScope& treeScope,
-    const HeapVector<Member<const RuleSet>>& ruleSets) {
+    const HeapVector<Member<RuleSet>>& ruleSets) {
 #if DCHECK_IS_ON()
   // Full scope recalcs should be handled while collecting the ruleSets before
   // calling this method.