Reapplying "Extensions: tab.title should not be undefined."
Reapplying "Extensions: tab.title should not be undefined."

I can no longer replicate the Vista unit test failures locally; I am assuming
it was flake on the part of the tests.

(If you request tab information while the page is loading, the tab.title
is undefined and it shouldn't be.)

Original Review URL: http://codereview.chromium.org/196125

BUG=22288
TEST=none

Review URL: http://codereview.chromium.org/542065

git-svn-id: http://src.chromium.org/svn/trunk/src@36197 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

Former-commit-id: e9bd918f7b93462cd70d32515745c2f80e899f33
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