Autoplay impossible on about:blank

[Jip-Hop]

Description

It's impossible to allow autoplay on about:blank (pop-up windows).

Steps to Reproduce

1. See example on jsitor.
2. Allow autoplay for jsitor.
3. Click the button to continue playback in a pop-up window.
4. Autoplay doesn't work in the pop-up, and permission can't be given.

Actual result:

It's not possible to click "Always allow autoplay on about:blank".
Also it's not possible to add "about:blank" to the whitelist in settings (not a valid url).

Expected result:

Pop-up windows from a whitelisted origin should be allowed to autoplay.

Reproduces how often:

Always.

Brave version (brave://version info)

Brave	1.5.122 Chromium: 80.0.3987.162 (Official Build) (64-bit)
Revision	f2c5dd6138153bb0658091205bd1a1717f16081a-refs/branch-heads/3987@{#1034}
OS	macOS Version 10.14.6 (Build 18G4032)

Version/Channel Information:

• Can you reproduce this issue with the current release?
  Yes.
• Can you reproduce this issue with the beta channel?
  Yes.
• Can you reproduce this issue with the dev channel?
  Yes.
• Can you reproduce this issue with the nightly channel?
  No, it's working in the nightly channel. Let's hope this behaviour makes it to the release.

Other Additional Information:

Works fine on Chrome.

Miscellaneous Information:

Related post.

[rebron]

Closing. @Jip-Hop We made some changes to autoplay. This shouldn't be an issue anymore. Can you check on 1.9.72, our latest version.

[rebron]

Please re-open if you're still seeing this issue.