Allow the tab widths to expand, e.g. for internationalization.
Allow the tab widths to expand, e.g. for internationalization.

BUG=71978
TEST=see bug

Review URL: http://codereview.chromium.org/6250182

git-svn-id: http://src.chromium.org/svn/trunk/src@74002 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

Former-commit-id: 91d243747d8c0d13389cb6b7c7e492b18a758b36
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