[Invalidation Tracking] Trace StyleInvalidator setNeedsStyleRecalc

Source/core/css/invalidation/DescendantInvalidationSet.h

Index: Source/core/css/invalidation/DescendantInvalidationSet.h
diff --git a/Source/core/css/invalidation/DescendantInvalidationSet.h b/Source/core/css/invalidation/DescendantInvalidationSet.h
index a04a2d6de2cd11a04ee4abe2dfcd9d89a0d9cc39..f42c58cd0fddaa3fcc577257872883c33d47077a 100644
--- a/Source/core/css/invalidation/DescendantInvalidationSet.h
+++ b/Source/core/css/invalidation/DescendantInvalidationSet.h
@@ -42,6 +42,7 @@
 namespace blink {
 
 class Element;
+class TracedValue;
 
 // Tracks data to determine which elements of a DOM subtree need to have style
 // recalculated.
@@ -52,6 +53,8 @@ public:
         return adoptRefWillBeNoop(new DescendantInvalidationSet);
     }
 
+    static void cacheTracingFlag();
+
     bool invalidatesElement(Element&) const;
 
     void combine(const DescendantInvalidationSet& other);
@@ -74,6 +77,8 @@ public:
 
     void trace(Visitor*);
 
+    void toTracedValue(TracedValue*) const;
+
 #ifndef NDEBUG
     void show() const;
 #endif