[Mac] Add a meaning attribute to two menu items to prevent string folding into other strings so they can be individually localized on the TC (in all languages).
[Mac] Add a meaning attribute to two menu items to prevent string folding into other strings so they can be individually localized on the TC (in all languages).

BUG=39182
TEST=none, new string entry will show in TC
Review URL: http://codereview.chromium.org/1410001

git-svn-id: http://src.chromium.org/svn/trunk/src@42784 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

Former-commit-id: 752ec941f9122eff4d2be489dc8a412462384052
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