Comment #1 on issue 91814 by cbent...@google.com: Iframe Basic
Authentication Issue
http://code.google.com/p/chromium/issues/detail?id=91814
tsepez: In this case, the iframe'd content does HTTP auth and is from a
different origin than the top-level page.
Another work around I found is to authenticate directly to that weblink and
then try using the iframe in the webpage, then it works. But this again is
not comfortable for clients, if we have multiple such links in a web
page/site. Rather than starting chrome with this flag, is it possible to
give a check/uncheck preference option for this in the browser preferences?