Implement Custom Elements inserted and removed callbacks.

Source/core/dom/Document.cpp

Index: Source/core/dom/Document.cpp
diff --git a/Source/core/dom/Document.cpp b/Source/core/dom/Document.cpp
index 34ad7320d34e3eed6d49601fd25dec6af4b6c4f2..d91be6c4062115dff1eb00e5f65cb14bd41325d0 100644
--- a/Source/core/dom/Document.cpp
+++ b/Source/core/dom/Document.cpp
@@ -764,13 +764,13 @@ PassRefPtr<Element> Document::createElement(const AtomicString& localName, const
     RefPtr<Element> element;
 
     if (CustomElementRegistry::isCustomTagName(localName))
-        element = ensureCustomElementRegistry()->createCustomTagElement(QualifiedName(nullAtom, localName, xhtmlNamespaceURI));
+        element = ensureCustomElementRegistry()->createCustomTagElement(QualifiedName(nullAtom, localName, xhtmlNamespaceURI), false);
     else
         element = createElement(localName, ec);
 
     if (!typeExtension.isNull()) {
         setTypeExtension(element.get(), typeExtension);
-        ensureCustomElementRegistry()->didGiveTypeExtension(element.get(), typeExtension);
+        ensureCustomElementRegistry()->didGiveTypeExtension(element.get(), typeExtension, false);
     }
 
     return element;
@@ -790,13 +790,13 @@ PassRefPtr<Element> Document::createElementNS(const AtomicString& namespaceURI,
 
     RefPtr<Element> element;
     if (CustomElementRegistry::isCustomTagName(qName.localName()))
-        element = ensureCustomElementRegistry()->createCustomTagElement(qName);
+        element = ensureCustomElementRegistry()->createCustomTagElement(qName, false);
     else
         element = createElementNS(namespaceURI, qualifiedName, ec);
 
     if (!typeExtension.isNull()) {
         setTypeExtension(element.get(), typeExtension);
-        ensureCustomElementRegistry()->didGiveTypeExtension(element.get(), typeExtension);
+        ensureCustomElementRegistry()->didGiveTypeExtension(element.get(), typeExtension, false);
     }
 
     return element;