Really fix translation console error about duplicate strings.

Make the android string unique by adding a meaning= tag.

BUG=None
TBR=joi

Review URL: https://codereview.chromium.org/48413005

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@231362 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 231362