Prevent constrained popup windows from trying to become real windows by using alert().
Prevent constrained popup windows from trying to become real
windows by using alert().

B=1372216
Review URL: http://codereview.chromium.org/1970

git-svn-id: dd90618784b6a4b323ea0c23a071cb1c9e6f2ac7@2116 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