Pow __proto__, sock :unresolved, and clunk the created callback at once.

Source/core/dom/Node.h

Index: Source/core/dom/Node.h
diff --git a/Source/core/dom/Node.h b/Source/core/dom/Node.h
index eaae64f34e11fcbd7758c176cb31fe453384d293..7cb59b6d9f70d6c941dbbf8a83e3bb5098801bfb 100644
--- a/Source/core/dom/Node.h
+++ b/Source/core/dom/Node.h
@@ -254,6 +254,8 @@ public:
 
     bool isCustomElement() const { return getFlag(IsCustomElement); }
     void setIsCustomElement();
+    bool isUpgradedCustomElement() const { return getFlag(IsUpgradedCustomElement); }
+    void setIsUpgradedCustomElement();
 
     virtual bool isMediaControlElement() const { return false; }
     virtual bool isMediaControls() const { return false; }
@@ -748,10 +750,12 @@ private:
 
         NotifyRendererWithIdenticalStyles = 1 << 28,
 
+        IsUpgradedCustomElement = 1 << 29,
+
         DefaultNodeFlags = IsParsingChildrenFinishedFlag
     };
 
-    // 3 bits remaining
+    // 2 bits remaining
 
     bool getFlag(NodeFlags mask) const { return m_nodeFlags & mask; }
     void setFlag(bool f, NodeFlags mask) const { m_nodeFlags = (m_nodeFlags & ~mask) | (-(int32_t)f & mask); }