GitLab

These methods are only implemented and used by OmniboxViewViews, so
they are removed from the base class.

Bug: 329527
Change-Id: I47bb17b9f51bc623383525181128c7ec5c3e8c40
Reviewed-on: https://chromium-review.googlesource.com/c/1429986
Auto-Submit: Stepan Khapugin <stkhapugin@chromium.org>
Reviewed-by: Justin Donnelly <jdonnelly@chromium.org>
Commit-Queue: Stepan Khapugin <stkhapugin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#626142}