[Mac] Widen the dialog to be a little more l10n friendly.
[Mac] Widen the dialog to be a little more l10n friendly.

BUG=51729
TEST=see bug
Review URL: http://codereview.chromium.org/3145016

git-svn-id: http://src.chromium.org/svn/trunk/src@56338 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

Former-commit-id: 609202e3f59e5da56b2aa478db074525df47f10f
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