GitLab

http://crrev.com/1047223004 added experimental icon NTP support and
changed default "white-space: nowrap" to "white-space: pre-wrap", then
make current Material Design select the old one. This is broke 3rd-party
NTPs that don't have the same setting. This CL changes the defaults back,
and adds a new "ntl" to signal intent of having multiline titles. Also
updated single-iframe NTP to match.

BUG=474164

Review URL: https://codereview.chromium.org/1061163003

Cr-Commit-Position: refs/heads/master@{#324097}