Wait correctly for navigations in ErrorPage UI test.
Wait correctly for navigations in ErrorPage UI test.

TBR=darin

TEST=none
http://crbug.com/19361

Review URL: http://codereview.chromium.org/173571

git-svn-id: http://src.chromium.org/svn/trunk/src@24607 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

Former-commit-id: ba4f5f6d0eadf1784152277954d58facf6d6f4f4
meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser