Language codes can be 3 characters.

Some language codes are now 3 characters. The old assumption is no
longer correct. For example, "fil" is for Filipino.

BUG=520862

Review URL: https://codereview.chromium.org/1303433005

Cr-Commit-Position: refs/heads/master@{#344287}
1 file changed