Upgrade elements that are created before a custom element definition is registered

LayoutTests/fast/dom/custom/element-upgrade-expected.txt

Index: LayoutTests/fast/dom/custom/element-upgrade-expected.txt
diff --git a/LayoutTests/fast/dom/custom/element-upgrade-expected.txt b/LayoutTests/fast/dom/custom/element-upgrade-expected.txt
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index 0000000000000000000000000000000000000000..8bd3b67f2d953a27f559bc97142bba4c0fa47bdc
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+++ b/LayoutTests/fast/dom/custom/element-upgrade-expected.txt
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+Tests the element upgrade algorithm.
+
+On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE".
+
+
+PASS host.firstChild instanceof A is true
+PASS element instanceof B is true
+PASS callCount is 1
+PASS element instanceof C is false
+PASS Object.getPrototypeOf(element) is HTMLElement.prototype
+PASS host.firstChild instanceof D is false
+PASS document.querySelector(":unresolved") is host.firstChild
+PASS successfullyParsed is true
+
+TEST COMPLETE
+