Custom Elements in template should not be upgraded

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 f8b010f16f056201ec128efaef0792b3e61e6405..a4f5fc0256386814a07652d7335b2914a89af125 100644
--- a/Source/core/dom/Document.cpp
+++ b/Source/core/dom/Document.cpp
@@ -993,7 +993,9 @@ PassRefPtrWillBeRawPtr<Node> Document::importNode(Node* importedNode, bool deep,
             if (!importContainerNodeChildren(oldElement, newElement, exceptionState))
                 return nullptr;
             if (isHTMLTemplateElement(*oldElement)
-                && !importContainerNodeChildren(toHTMLTemplateElement(oldElement)->content(), toHTMLTemplateElement(newElement)->content(), exceptionState))
+                && !(toHTMLTemplateElement(oldElement)->content()->document()).importContainerNodeChildren(

[dglazkov, 2014/11/17 17:26:06]

Could you just use Document::ensureTemplateDocument here, rather than reach into
the content fragment?

[deepak.sa, 2014/11/18 07:15:24]

Done.

+                    toHTMLTemplateElement(oldElement)->content(),
+                    toHTMLTemplateElement(newElement)->content(), exceptionState))
                 return nullptr;
         }