Remove custom style callbacks.

sky/engine/core/dom/shadow/InsertionPoint.cpp

Index: sky/engine/core/dom/shadow/InsertionPoint.cpp
diff --git a/sky/engine/core/dom/shadow/InsertionPoint.cpp b/sky/engine/core/dom/shadow/InsertionPoint.cpp
index 07aab073e9a25ebdd8e61954326f1229df688b9a..1f35f0df8580db7c685fccbbfe1e2ce4708be21d 100644
--- a/sky/engine/core/dom/shadow/InsertionPoint.cpp
+++ b/sky/engine/core/dom/shadow/InsertionPoint.cpp
@@ -43,7 +43,6 @@ InsertionPoint::InsertionPoint(const QualifiedName& tagName, Document& document)
     : HTMLElement(tagName, document, CreateInsertionPoint)
     , m_registeredWithShadowRoot(false)
 {
-    setHasCustomStyleCallbacks();
 }
 
 InsertionPoint::~InsertionPoint()
@@ -239,12 +238,6 @@ void InsertionPoint::removedFrom(ContainerNode* insertionPoint)
     HTMLElement::removedFrom(insertionPoint);
 }
 
-void InsertionPoint::trace(Visitor* visitor)
-{
-    visitor->trace(m_distribution);
-    HTMLElement::trace(visitor);
-}
-
 const InsertionPoint* resolveReprojection(const Node* projectedNode)
 {
     ASSERT(projectedNode);