Also "postfix suggestions". But we still need to document somewhere that these are equivalent, because we can't (easily) go change GWS files, and team members need to be able to find those.

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/51ccd0e9ec5db8cc0b554d66d03f937648ae540a

commit 51ccd0e9ec5db8cc0b554d66d03f937648ae540a
Author: krb <krb@chromium.org>
Date: Fri Apr 21 04:16:52 2017

Standardizing on the name "tail suggestions" (in comments)

The name of the feature changed over time. Changing all comments
from "infinite" and "postfix" to "tail" suggestions.

BUG= 713837 

Review-Url: https://codereview.chromium.org/2836453002
Cr-Commit-Position: refs/heads/master@{#466257}

[modify] https://crrev.com/51ccd0e9ec5db8cc0b554d66d03f937648ae540a/chrome/browser/ui/cocoa/omnibox/omnibox_popup_cell.h
[modify] https://crrev.com/51ccd0e9ec5db8cc0b554d66d03f937648ae540a/chrome/browser/ui/cocoa/omnibox/omnibox_popup_cell.mm
[modify] https://crrev.com/51ccd0e9ec5db8cc0b554d66d03f937648ae540a/chrome/browser/ui/cocoa/omnibox/omnibox_popup_matrix.h
[modify] https://crrev.com/51ccd0e9ec5db8cc0b554d66d03f937648ae540a/chrome/browser/ui/views/omnibox/omnibox_popup_contents_view.h
[modify] https://crrev.com/51ccd0e9ec5db8cc0b554d66d03f937648ae540a/chrome/browser/ui/views/omnibox/omnibox_result_view.cc
[modify] https://crrev.com/51ccd0e9ec5db8cc0b554d66d03f937648ae540a/chrome/browser/ui/views/omnibox/omnibox_result_view.h
[modify] https://crrev.com/51ccd0e9ec5db8cc0b554d66d03f937648ae540a/components/omnibox/browser/search_suggestion_parser.h