The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/e90ccf7a5a1d49e02f1a02f853cf4e951bc4dbbc

commit e90ccf7a5a1d49e02f1a02f853cf4e951bc4dbbc
Author: Daniel Zhang <oxyflush@google.com>
Date: Fri Sep 07 18:39:09 2018

cros: Enable AppList autocomplete by default

Approved by UX.

Bug:  877111 
Change-Id: Ib890a03e22bbb017848cf413fbbc0e9e18a81e5d
Reviewed-on: https://chromium-review.googlesource.com/1196916
Reviewed-by: Xiyuan Xia <xiyuan@chromium.org>
Reviewed-by: Alex Newcomer <newcomer@chromium.org>
Commit-Queue: Daniel Zhang <oxyflush@google.com>
Cr-Commit-Position: refs/heads/master@{#589600}
[modify] https://crrev.com/e90ccf7a5a1d49e02f1a02f853cf4e951bc4dbbc/ash/public/cpp/app_list/app_list_features.cc

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/7e7760426203ec831021fd866417bb1060ff40a6

commit 7e7760426203ec831021fd866417bb1060ff40a6
Author: Weidong Guo <weidongg@chromium.org>
Date: Thu Dec 06 02:21:29 2018

Enable applist autocomplete by default

Bug:  877111 
Change-Id: Iae2a27baf7e3b0b8983b08352396e1fbf1d13f9f
Reviewed-on: https://chromium-review.googlesource.com/c/1358043
Reviewed-by: Alex Newcomer <newcomer@chromium.org>
Reviewed-by: Xiyuan Xia <xiyuan@chromium.org>
Commit-Queue: Weidong Guo <weidongg@chromium.org>
Cr-Commit-Position: refs/heads/master@{#614236}
[modify] https://crrev.com/7e7760426203ec831021fd866417bb1060ff40a6/ash/app_list/views/search_box_view.cc
[modify] https://crrev.com/7e7760426203ec831021fd866417bb1060ff40a6/ash/public/cpp/app_list/app_list_features.cc