IIUC, the only blocker for this is giving Chrome's CQ bots access to the betty VM image. For security reasons, we can't give our bots access to google-only/restricted resources. Everything they do has to be fully public.

So what would it take to make the betty VM image publicly available like the amd64-generic one is? Adding both Build and CI bug components.

doing a public betty VM seems unlikely at this time.  it has all the ARC++ enabled bits in it.  you'll need to talk to the people in charge of approving those aspects first.

So, we should keep betty internal. Since we don't intend to test ARC++ features, we don't need to use betty.

I think we have two options:
(1) Enable camera HAL and vivid on amd64-generic
(2) Create a new VM image

(1) should be easier.
Though I'm not sure how many boards will be affected by changing amd64-generic, I will try (1) as the first step. (maybe next week)

throw all the stuff you like into amd64-generic ... that's what it's there for.  so enabling vivid all the time for it is OK.

I changed the summary of this issue because we don't need to make betty public.

Instead, I created 3 CLs that make HALv3 and vivid available on amd64-generic:
- crrev.com/c/1201651 (target-chromium-os) 
- crrev.com/i/671312  (internal)
- crrev.com/c/1201425 (overlay-amd64-generic)

The 3CLs were merged and amd64-generic has HALv3 and vivid now. 
(though I wonder why bugdroid hasn't report them yet)

So, I mark this issue as Fixed.

The following revision refers to this bug:
  https://chrome-internal.googlesource.com/chromeos/overlays/project-cheets-private/+/ab30ab327c81119ad05ffa1d654dcdcc4608b003

commit ab30ab327c81119ad05ffa1d654dcdcc4608b003
Author: Keiichi Watanabe <keiichiw@chromium.org>
Date: Wed Sep 05 12:11:37 2018

The following revision refers to this bug:
  https://chromium.googlesource.com/chromiumos/overlays/board-overlays/+/2c3d0cdc508b8201ab6a84af1bc3406a34ae1f85

commit 2c3d0cdc508b8201ab6a84af1bc3406a34ae1f85
Author: Keiichi Watanabe <keiichiw@chromium.org>
Date: Wed Sep 05 12:11:51 2018

amd64-generic: Enable arc-camera3 and vivid on amd64-generic

To test camera HALv3 on Chromium CQ, we need to enable it on
amd64-generic. In addition, we use vivid as an video input device there.

Dependency check for USE flag arc-camera3 is added in target-chromium-os by
CL:1201651.

BUG= chromium:879140 
TEST=autotest video_WebRtcCamera on amd64-generic VM with vivid (w/ CL:1201651, CL:*671312)

Change-Id: I327340731cb92a90b37859440f20770d1fa848b4
Signed-off-by: Keiichi Watanabe <keiichiw@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/1201425
Reviewed-by: Tomasz Figa <tfiga@chromium.org>

[add] https://crrev.com/2c3d0cdc508b8201ab6a84af1bc3406a34ae1f85/overlay-amd64-generic/virtual/autotest-capability/autotest-capability-2.ebuild
[modify] https://crrev.com/2c3d0cdc508b8201ab6a84af1bc3406a34ae1f85/overlay-amd64-generic/profiles/base/make.defaults
[add] https://crrev.com/2c3d0cdc508b8201ab6a84af1bc3406a34ae1f85/overlay-amd64-generic/chromeos-base/autotest-capability-amd64-generic/autotest-capability-amd64-generic-1.0.0.ebuild
[add] https://crrev.com/2c3d0cdc508b8201ab6a84af1bc3406a34ae1f85/overlay-amd64-generic/chromeos-base/autotest-capability-amd64-generic/files/20-amd64-generic-capabilities.yaml
[add] https://crrev.com/2c3d0cdc508b8201ab6a84af1bc3406a34ae1f85/overlay-amd64-generic/chromeos-base/autotest-capability-amd64-generic/autotest-capability-amd64-generic-1.0.0-r1.ebuild

The following revision refers to this bug:
  https://chromium.googlesource.com/chromiumos/overlays/chromiumos-overlay/+/0634be292cc36f201ed1d02cafb040140252b519

commit 0634be292cc36f201ed1d02cafb040140252b519
Author: Keiichi Watanabe <keiichiw@chromium.org>
Date: Wed Sep 05 12:11:36 2018

target-chromium-os: Add dependency check for cros-camera

Our new camera stack HALv3 (chromeos-base/cros-camera) should be installed on
all devices, because it doesn't depend on ARC++.
As the first step, this patch adds a dependency check for arc-camera3 USE flag, which is moved
from an internal overlay (CL:*671312).

BUG=b:80502887
BUG= chromium:879140 
TEST=Use a USB camera on guado, where ARC++ and HAL v3 are disabled (w/ CL:*671312)
TEST=autotest video_WebRtcCamera on amd64-generic VM with vivid, where HALv3 is used
     (w/ CL:*671312 and CL:1201425)
CQ-DEPEND=CL:*671312

Change-Id: I3d779a0b38401aaa7082a8853cc4e652b8f335cb
Signed-off-by: Keiichi Watanabe <keiichiw@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/1201651
Reviewed-by: Ricky Liang <jcliang@chromium.org>
Reviewed-by: Tomasz Figa <tfiga@chromium.org>

[modify] https://crrev.com/0634be292cc36f201ed1d02cafb040140252b519/virtual/target-chromium-os/target-chromium-os-1.ebuild
[rename] https://crrev.com/0634be292cc36f201ed1d02cafb040140252b519/virtual/target-chromium-os/target-chromium-os-1-r107.ebuild