Why does it take 'fallback' argument and it creates a fallback text if 'fallback' is not provided? It's very confusing...
Created attachment 129628 [details] Patch
Committed r109309: <http://trac.webkit.org/changeset/109309>
Reverted r109309 for reason: broke Committed r109315: <http://trac.webkit.org/changeset/109315>
I found a bug in NodeRenderingContext. Fallback elements in non-youngest shadow tree was rendered... It should not be rendered.
Let's reuse this bug to fix it.
Created attachment 129644 [details] Patch
Comment on attachment 129644 [details] Patch Looks OK. Please nominate the test name in ChangeLog.
Created attachment 129646 [details] Patch for landing
Committed r109321: <http://trac.webkit.org/changeset/109321>