The Mac version of Chromium crashes when entering fullscreen because it hits ASSERT_NOT_REACHED in RenderThemeMac::extraFullScreenStyleSheet(), which was added in changeset 82053. I have a fix.
David, this may be a dup of bug #57400.
Oh, disregard. This is indeed a different issue.
Created attachment 87591 [details] Override extraFullScreenStyleSheet in RenderThemeChromiumMac.
Looks good to me.
Comment on attachment 87591 [details] Override extraFullScreenStyleSheet in RenderThemeChromiumMac. Clearing flags on attachment: 87591 Committed r82863: <http://trac.webkit.org/changeset/82863>
All reviewed patches have been landed. Closing bug.