Has this been through UX review? Can we link any design discussion for this here?

https://gallery.googleplex.com/projects/MCHbtQVoQ2HCZY5BZ8F2qhKy/files/MCGlADLXfEphY0VvrzTnhxdQwMSJbxAVNpw

This includes the prototype of the swiping up on the shelf, but it is only for laptop. What I did currently is for tablet.
The first CL is to show the whole app list first. Will add the animation in the following cls (e.g, fade in / out the searchbox at the beginning).

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/d646ae0a014564fd9fb4e879e70837ea715a64e9

commit d646ae0a014564fd9fb4e879e70837ea715a64e9
Author: MinChen <minch@chromium.org>
Date: Fri Jul 21 23:07:17 2017

Swiping up on shelf to show the app list.

If the app list is not opened and shelf is visible, swipe up on the shelf
should show the app list.
If the app list is opened, swipe up on the shelf should keep the app list
opened. Tap anywhere else of shelf should close the app list.

This is the basic one currently. Will add some simple animations followed.
(e.g, change the opacity of the searchbox and apps row by row according
to the dragging amount)

Bug:  735999 ,742461
Change-Id: I5eb8b6d4d006a50720050b34168849e9d57370f2
Reviewed-on: https://chromium-review.googlesource.com/562739
Commit-Queue: min c <minch@chromium.org>
Reviewed-by: Mustafa Emre Acer <meacer@chromium.org>
Reviewed-by: James Cook <jamescook@chromium.org>
Reviewed-by: Michael Wasserman <msw@chromium.org>
Reviewed-by: Steven Bennetts <stevenjb@chromium.org>
Cr-Commit-Position: refs/heads/master@{#488781}
[modify] https://crrev.com/d646ae0a014564fd9fb4e879e70837ea715a64e9/ash/app_list/app_list_presenter_delegate.cc
[modify] https://crrev.com/d646ae0a014564fd9fb4e879e70837ea715a64e9/ash/app_list/app_list_presenter_delegate_unittest.cc
[modify] https://crrev.com/d646ae0a014564fd9fb4e879e70837ea715a64e9/ash/shelf/shelf_layout_manager.cc
[modify] https://crrev.com/d646ae0a014564fd9fb4e879e70837ea715a64e9/ash/shelf/shelf_layout_manager.h
[modify] https://crrev.com/d646ae0a014564fd9fb4e879e70837ea715a64e9/ash/shelf/shelf_layout_manager_unittest.cc
[modify] https://crrev.com/d646ae0a014564fd9fb4e879e70837ea715a64e9/ash/shelf/shelf_view.cc
[modify] https://crrev.com/d646ae0a014564fd9fb4e879e70837ea715a64e9/ash/shell.cc
[modify] https://crrev.com/d646ae0a014564fd9fb4e879e70837ea715a64e9/ash/shell.h
[modify] https://crrev.com/d646ae0a014564fd9fb4e879e70837ea715a64e9/ash/shell/example_app_list_presenter.cc
[modify] https://crrev.com/d646ae0a014564fd9fb4e879e70837ea715a64e9/ash/shell/example_app_list_presenter.h
[modify] https://crrev.com/d646ae0a014564fd9fb4e879e70837ea715a64e9/ash/system/status_area_widget_delegate.cc
[modify] https://crrev.com/d646ae0a014564fd9fb4e879e70837ea715a64e9/ash/system/tray_drag_controller.cc
[modify] https://crrev.com/d646ae0a014564fd9fb4e879e70837ea715a64e9/chrome/browser/ui/ash/app_list/app_list_presenter_service.cc
[modify] https://crrev.com/d646ae0a014564fd9fb4e879e70837ea715a64e9/chrome/browser/ui/ash/app_list/app_list_presenter_service.h
[modify] https://crrev.com/d646ae0a014564fd9fb4e879e70837ea715a64e9/ui/app_list/presenter/app_list.cc
[modify] https://crrev.com/d646ae0a014564fd9fb4e879e70837ea715a64e9/ui/app_list/presenter/app_list.h
[modify] https://crrev.com/d646ae0a014564fd9fb4e879e70837ea715a64e9/ui/app_list/presenter/app_list_presenter.mojom
[modify] https://crrev.com/d646ae0a014564fd9fb4e879e70837ea715a64e9/ui/app_list/presenter/app_list_presenter_impl.cc
[modify] https://crrev.com/d646ae0a014564fd9fb4e879e70837ea715a64e9/ui/app_list/presenter/app_list_presenter_impl.h
[modify] https://crrev.com/d646ae0a014564fd9fb4e879e70837ea715a64e9/ui/app_list/presenter/test/test_app_list_presenter.cc
[modify] https://crrev.com/d646ae0a014564fd9fb4e879e70837ea715a64e9/ui/app_list/presenter/test/test_app_list_presenter.h
[modify] https://crrev.com/d646ae0a014564fd9fb4e879e70837ea715a64e9/ui/app_list/views/app_list_view.cc
[modify] https://crrev.com/d646ae0a014564fd9fb4e879e70837ea715a64e9/ui/app_list/views/app_list_view.h

Re comment #6 - yes it has.
Designs are in comment #7

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/dc2e10a3aeeb15325a604b3e8888ed149fb9a1fe

commit dc2e10a3aeeb15325a604b3e8888ed149fb9a1fe
Author: Maajid <maajid@chromium.org>
Date: Sat Jul 29 00:59:54 2017

Swiping up on shelf to show the app list.

If the app list is not opened and shelf is visible, swipe up on the shelf
should show the app list.
If the app list is opened, swipe up on the shelf should keep the app list
opened. Tap anywhere else of shelf should close the app list.

This is the basic one currently. Will add some simple animations followed.
(e.g, change the opacity of the searchbox and apps row by row according
to the dragging amount)

TBR=minch@chromium.org

(cherry picked from commit d646ae0a014564fd9fb4e879e70837ea715a64e9)

Bug:  735999 ,742461
Change-Id: I5eb8b6d4d006a50720050b34168849e9d57370f2
Reviewed-on: https://chromium-review.googlesource.com/562739
Commit-Queue: min c <minch@chromium.org>
Reviewed-by: Mustafa Emre Acer <meacer@chromium.org>
Reviewed-by: James Cook <jamescook@chromium.org>
Reviewed-by: Michael Wasserman <msw@chromium.org>
Reviewed-by: Steven Bennetts <stevenjb@chromium.org>
Cr-Original-Commit-Position: refs/heads/master@{#488781}
Reviewed-on: https://chromium-review.googlesource.com/592692
Reviewed-by: Vadim Tryshev <vadimt@chromium.org>
Cr-Commit-Position: refs/branch-heads/3163@{#129}
Cr-Branched-From: ff259bab28b35d242e10186cd63af7ed404fae0d-refs/heads/master@{#488528}
[modify] https://crrev.com/dc2e10a3aeeb15325a604b3e8888ed149fb9a1fe/ash/app_list/app_list_presenter_delegate.cc
[modify] https://crrev.com/dc2e10a3aeeb15325a604b3e8888ed149fb9a1fe/ash/app_list/app_list_presenter_delegate_unittest.cc
[modify] https://crrev.com/dc2e10a3aeeb15325a604b3e8888ed149fb9a1fe/ash/shelf/shelf_layout_manager.cc
[modify] https://crrev.com/dc2e10a3aeeb15325a604b3e8888ed149fb9a1fe/ash/shelf/shelf_layout_manager.h
[modify] https://crrev.com/dc2e10a3aeeb15325a604b3e8888ed149fb9a1fe/ash/shelf/shelf_layout_manager_unittest.cc
[modify] https://crrev.com/dc2e10a3aeeb15325a604b3e8888ed149fb9a1fe/ash/shelf/shelf_view.cc
[modify] https://crrev.com/dc2e10a3aeeb15325a604b3e8888ed149fb9a1fe/ash/shell.cc
[modify] https://crrev.com/dc2e10a3aeeb15325a604b3e8888ed149fb9a1fe/ash/shell.h
[modify] https://crrev.com/dc2e10a3aeeb15325a604b3e8888ed149fb9a1fe/ash/shell/example_app_list_presenter.cc
[modify] https://crrev.com/dc2e10a3aeeb15325a604b3e8888ed149fb9a1fe/ash/shell/example_app_list_presenter.h
[modify] https://crrev.com/dc2e10a3aeeb15325a604b3e8888ed149fb9a1fe/ash/system/status_area_widget_delegate.cc
[modify] https://crrev.com/dc2e10a3aeeb15325a604b3e8888ed149fb9a1fe/ash/system/tray_drag_controller.cc
[modify] https://crrev.com/dc2e10a3aeeb15325a604b3e8888ed149fb9a1fe/chrome/browser/ui/ash/app_list/app_list_presenter_service.cc
[modify] https://crrev.com/dc2e10a3aeeb15325a604b3e8888ed149fb9a1fe/chrome/browser/ui/ash/app_list/app_list_presenter_service.h
[modify] https://crrev.com/dc2e10a3aeeb15325a604b3e8888ed149fb9a1fe/ui/app_list/presenter/app_list.cc
[modify] https://crrev.com/dc2e10a3aeeb15325a604b3e8888ed149fb9a1fe/ui/app_list/presenter/app_list.h
[modify] https://crrev.com/dc2e10a3aeeb15325a604b3e8888ed149fb9a1fe/ui/app_list/presenter/app_list_presenter.mojom
[modify] https://crrev.com/dc2e10a3aeeb15325a604b3e8888ed149fb9a1fe/ui/app_list/presenter/app_list_presenter_impl.cc
[modify] https://crrev.com/dc2e10a3aeeb15325a604b3e8888ed149fb9a1fe/ui/app_list/presenter/app_list_presenter_impl.h
[modify] https://crrev.com/dc2e10a3aeeb15325a604b3e8888ed149fb9a1fe/ui/app_list/presenter/test/test_app_list_presenter.cc
[modify] https://crrev.com/dc2e10a3aeeb15325a604b3e8888ed149fb9a1fe/ui/app_list/presenter/test/test_app_list_presenter.h
[modify] https://crrev.com/dc2e10a3aeeb15325a604b3e8888ed149fb9a1fe/ui/app_list/views/app_list_view.cc
[modify] https://crrev.com/dc2e10a3aeeb15325a604b3e8888ed149fb9a1fe/ui/app_list/views/app_list_view.h