Tweak heuristic to hide fixed-size parent <div>s for one more case.
Tweak heuristic to hide fixed-size parent <div>s for one more case.

BUG=http://code.google.com/p/chromium/issues/detail?id=63695
TEST=http://www.zontera.com/banners/clients_work/floating_flash/centered/dove/

Review URL: http://codereview.chromium.org/6266009

git-svn-id: dd90618784b6a4b323ea0c23a071cb1c9e6f2ac7@71761 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser