Follow up of #10811 - For some profiles, site-specific autoplay settings are not respected

[GeetaSarvadnya]

Description

Follow up of #10811 - For some profiles, site-specific autoplay settings are not respected

Steps to Reproduce

1. Clean profile 1.18.68
2. Open brave://settings/content/autoplay
3. Block Autoplay globally
4. Open https://www.blick.ch/ in a new tab and observe videos are auto-played although autoplay blocked indicator is shown in the URL bar
5. Open https://24.hu/tech/2020/07/22/google-gmail-hitelesitett-email-logo/ in a new tab and observe videos are auto-played although autoplay blocked indicator is shown in the URL bar

Note: Youtube.com works fine, videos don't autoplay

Actual result:

Videos are auto-played on some sites even though autoplay is blocked globally

Expected result:

Videos should not autoplay when autoplay is blocked globally

Reproduces how often:

Easy

Brave version (brave://version info)

Brave	1.18.68 Chromium: 87.0.4280.67 (Official Build) dev (64-bit)
Revision	0e5d92df40086cf0050c00f87b11da1b14580930-refs/branch-heads/4280@{#1441}
OS	Windows 10 OS Version 2004 (Build 19041.630)

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 nightly channel? Yes

Other Additional Information:

• Does the issue resolve itself when disabling Brave Shields? NA
• Does the issue resolve itself when disabling Brave Rewards? NA
• Is the issue reproducible on the latest version of Chrome? NA

Miscellaneous Information:

cc: @brave/legacy_qa @pes10k @darkdh @rebron

[Johann999]

This problem already exists in version 1.17.73.

[qhaas]

Seeing similar issues with reuters.com for their (non-TV) articles that feature muted autoplay videos. I am also on 1.17.73 with autoplay disabled globally and verified to be disabled on this site in particular. Yet, those autoplay videos still play, quite annoying.

[Brave-Matt]

I wanted to add to this issue because it's the closest one I could find to some newer behaviors I'm seeing:

1. Youtube seems to (sometimes) autoplay a video if the page is refreshed.
   • Ex. Open YT video w/autoplay = blocked (globally). Video does not play on load. Refresh the page, video seems to play sometimes (can't nail down exact cause).
2. (More notable) If autoplay is blocked on Youtube, changing the volume in the YT player will force-pause the video.

Similar issues noted here by user on reddit:
https://www.reddit.com/r/brave_browser/comments/ki9cw7/youtube_autoplays_videos_when_page_refereshed/