Fix a typo in a comment.
Fix a typo in a comment.

(I've had this patch sitting around for a while as part of an unrelated
diff, may as well fix it separately.)

Review URL: http://codereview.chromium.org/3383011

git-svn-id: http://src.chromium.org/svn/trunk/src@59742 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

Former-commit-id: a8731533984314781edee6819d27fc517a47f4d1
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