Bug 1485521 [wpt PR 12636] - Update wpt metadata, a=testonly

wpt-pr: 12636 wpt-type: metadata
2018-08-23 00:13:25 +00:00 · 2018-08-23 00:13:25 +00:00 · 9bb0eea661
--- a/testing/web-platform/meta/html/webappapis/dynamic-markup-insertion/opening-the-input-stream/url.window.js.ini
+++ b/testing/web-platform/meta/html/webappapis/dynamic-markup-insertion/opening-the-input-stream/url.window.js.ini
@ -0,0 +1,4 @@
+[url.window.html]
+  [document.open() does not change document's URL (active but not fully active document)]
+    expected: FAIL
+