GitLab

Adds IPH for top-level menu button of the Discover feed header in the
NTP. Here is clip for the IPH appearing: http://shortn/_TejkyqTmah

Bug: 1085419
Change-Id: I7a713d1e8cdb66fda3902ceb1f5db843bf414f0f
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2354904
Commit-Queue: Sergio Collazos <sczs@chromium.org>
Reviewed-by: Sergio Collazos <sczs@chromium.org>
Reviewed-by: Tommy Nyquist <nyquist@chromium.org>
Reviewed-by: edchin <edchin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#800161}