Clean up child checks in ContainerNode.

sky/engine/core/dom/DocumentFragment.cpp

Index: sky/engine/core/dom/DocumentFragment.cpp
diff --git a/sky/engine/core/dom/DocumentFragment.cpp b/sky/engine/core/dom/DocumentFragment.cpp
index 9745f659f8f688892e49d12e843b3c1e6d0cb681..9356f6d3893e7e6ce56dc5212b3cc12bb616e6ac 100644
--- a/sky/engine/core/dom/DocumentFragment.cpp
+++ b/sky/engine/core/dom/DocumentFragment.cpp
@@ -48,17 +48,6 @@ Node::NodeType DocumentFragment::nodeType() const
     return DOCUMENT_FRAGMENT_NODE;
 }
 
-bool DocumentFragment::childTypeAllowed(NodeType type) const
-{
-    switch (type) {
-        case ELEMENT_NODE:
-        case TEXT_NODE:
-            return true;
-        default:
-            return false;
-    }
-}
-
 PassRefPtr<Node> DocumentFragment::cloneNode(bool deep)
 {
     RefPtr<DocumentFragment> clone = create(document());