We found a bug in downstream Chromium related to launching shared workers simultaneously in a top-level document and in an iframe. Turns out that we don't explicitly test this case in any of the WebKit layout tests, so we should add a test.
Created attachment 50854 [details] Patch
Comment on attachment 50854 [details] Patch This looks good. Thanks! r- for mild issue having two files wit the same name "shared-worker-iframe.html" but having different purposes.
Created attachment 50857 [details] Patch
Comment on attachment 50857 [details] Patch Clearing flags on attachment: 50857 Committed r56136: <http://trac.webkit.org/changeset/56136>
All reviewed patches have been landed. Closing bug.