Add and update PDF infobar strings. Review URL: http://codereview.chromium.org/6360021
Add and update PDF infobar strings.
Review URL: http://codereview.chromium.org/6360021

git-svn-id: http://src.chromium.org/svn/trunk/src@72646 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

Former-commit-id: f092ea8ec852e756970611c5d64b7d4072444de6
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