Logs and screenshots @ http://go/chrome-androidlogs1/8/839642 

+Piotr - do you remember if this is expected on Android 4.1?

I am confident I tested this on Jellybean and it was fine. I cannot finds the screenshots though now.

According to https://developer.android.com/guide/topics/ui/notifiers/notifications 4.1 does support expandable notifications and notification actions. The issue here might be something with the Touchviz layer.

Thanks Piotr!

I don't think this should block launch as it is relatively minor. It also doesn't break anything. Let's try and fix for 68 though.

Yaron - Any idea who would own this kind of stuff now?

No idea. +peter/awdf in case they might know off-hand about system limitations there?

(why is this private?)

Android 4.1 was the first release that supported expandable notifications, so it wouldn't surprise me if not including buttons were an Android and/or Samsung TouchViz issue.

(No reason to be private)

I'm thinking we should just close this bug; I can't see us finding time to fix it and it doesn't seem important. Does anyone disagree?

Agreed. We're likely going to drop JB support soon anyway

+1 from me too - thanks :)

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/629360d2d2b5a84ebc49c612ee2804e05a0a79ad

commit 629360d2d2b5a84ebc49c612ee2804e05a0a79ad
Author: Hongchan Choi <hongchan@chromium.org>
Date: Mon May 21 17:30:12 2018

Check WorkletPendingTasks when BaseAudioContext is going away

This is a speculative fix for the bug associated. The following is the
scenario of potential NULL-deference:

1. BaseAudioContext.audioWorklet.addModule('some.url');
2. BaseAudioContext is destroyed.
3. The callback originated from the module loading arrives, but the
   associated context is already gone.
4. Crash with NULL deference, because the callback touches the
   destination node of the AudioContext.

This CL fixes the issue by keeping track of WorkletPendingTasks until
module loading tasks are resolved.

Bug:  839642 
Change-Id: I154bb8c56f0fa95d6708c642047c7b05acf83eb2
Reviewed-on: https://chromium-review.googlesource.com/1062795
Reviewed-by: Raymond Toy <rtoy@chromium.org>
Reviewed-by: Kentaro Hara <haraken@chromium.org>
Reviewed-by: Hiroki Nakagawa <nhiroki@chromium.org>
Commit-Queue: Hongchan Choi <hongchan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#560290}
[modify] https://crrev.com/629360d2d2b5a84ebc49c612ee2804e05a0a79ad/third_party/blink/renderer/core/workers/worklet.cc
[modify] https://crrev.com/629360d2d2b5a84ebc49c612ee2804e05a0a79ad/third_party/blink/renderer/core/workers/worklet.h
[modify] https://crrev.com/629360d2d2b5a84ebc49c612ee2804e05a0a79ad/third_party/blink/renderer/core/workers/worklet_pending_tasks.cc
[modify] https://crrev.com/629360d2d2b5a84ebc49c612ee2804e05a0a79ad/third_party/blink/renderer/core/workers/worklet_pending_tasks.h
[modify] https://crrev.com/629360d2d2b5a84ebc49c612ee2804e05a0a79ad/third_party/blink/renderer/modules/webaudio/base_audio_context.cc