This seems to be a duplicate of https://bugs.chromium.org/p/chromium/issues/detail?id=739918, can you clarify/merge them? Thanks!

This is not the dup. Indicator has "ALL APPS" label. They are different things : )

Btw, the description is described after https://chromium-review.googlesource.com/c/564485/ is landed, so it is a bit of confusing right now.

Clarified with offline discussion; this tracks the ALL APPS label missing after the suggested apps section is added to the full screen app list view per https://chromium-review.googlesource.com/c/564485/ 

Discussed with UX, the wanted behavior is when scrolling up, all apps indicator will replace suggested apps indicator, and stop there, then all apps tiles scrolling underneath the all apps indicator.

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/2a4dc1da3f469b22578fd96b5a1a2169d081d663

commit 2a4dc1da3f469b22578fd96b5a1a2169d081d663
Author: Qiang Xu <warx@chromium.org>
Date: Thu Jul 13 02:33:21 2017

app_list: set all apps indicator negative transition offset limit

changes:
Set all apps indicator negative transition offset limit to the place of
initial suggested apps indicator.
This will make:
(1) when scrolling up, all apps indicator will stop at 21px padding
away from search box, while all apps tiles scrolling underneath it.
(2) all apps indicator will be shown on non-first page due to (1).

Bug:  741009 
TEST: tested with fullscreen app list enabled
Change-Id: I7fa71f041f81b0939c507fb246589cfdb6dbc06a
Reviewed-on: https://chromium-review.googlesource.com/569378
Reviewed-by: Steven Bennetts <stevenjb@chromium.org>
Commit-Queue: Qiang(Joe) Xu <warx@chromium.org>
Cr-Commit-Position: refs/heads/master@{#486230}
[modify] https://crrev.com/2a4dc1da3f469b22578fd96b5a1a2169d081d663/ui/app_list/views/apps_grid_view.cc