Scripts navigator fails to reopen previously closed script.
Steps to reproduce:
0. Close all script tabs.
1. Open script in a tab.
2. Close tab.
3. Try to reopen.
Created attachment 126256 [details]
Comment on attachment 126256 [details]
Attachment 126256 [details] did not pass chromium-ews (chromium-xvfb):
New failing tests:
Committed r107209: <http://trac.webkit.org/changeset/107209>