Support slotchange event

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

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2001 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All rights reserved.
  * Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies)
  * Copyright (C) 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
@@ skipping 2147 matching lines @@
         DCHECK(insertionPoint->containingShadowRoot());
         if (!insertionPoint->containingShadowRoot()->isOpenOrV0())
             break;
         filteredInsertionPoints.append(insertionPoint);
     }
     return StaticNodeList::adopt(filteredInsertionPoints);
 }
 
 HTMLSlotElement* Node::assignedSlot() const
 {
-#if DCHECK_IS_ON()
-    DCHECK(!needsDistributionRecalc());
-#endif
     Element* parent = parentElement();
     ShadowRoot* root = parent ? parent->youngestShadowRoot() : nullptr;
     if (root && root->isV1())
         return root->assignedSlotFor(*this);
     return nullptr;
 }
 
 HTMLSlotElement* Node::assignedSlotForBinding()
 {
     updateDistribution();
@@ skipping 62 matching lines @@
     }
 
     DCHECK(isHTMLElement() || isSVGElement());
     setFlag(CustomElementFlag);
     setFlag(newState == Upgraded, CustomElementUpgradedFlag);
 
     if (oldState == NotCustomElement || newState == Upgraded)
         toElement(this)->pseudoStateChanged(CSSSelector::PseudoUnresolved);
 }
 
+void Node::updateAssignmentForInsertedInto(ContainerNode* insertionPoint)
+{
+    if (isShadowHost(insertionPoint)) {
+        ShadowRoot* root = insertionPoint->youngestShadowRoot();
+        if (root && root->isV1())
+            root->assignV1();
+    }
+}
+
 DEFINE_TRACE(Node)
 {
     visitor->trace(m_parentOrShadowHostNode);
     visitor->trace(m_previous);
     visitor->trace(m_next);
     // rareData() and m_data.m_layoutObject share their storage. We have to trace
     // only one of them.
     if (hasRareData())
         visitor->trace(rareData());
 
@@ skipping 63 matching lines @@
 
 void showNodePath(const blink::Node* node)
 {
     if (node)
         node->showNodePathForThis();
     else
         fprintf(stderr, "Cannot showNodePath for (nil)\n");
 }
 
 #endif