Use headless Google Chrome browser in GitLab QA

What does this MR do?

This MR makes a transition from QtWebkit browser to headless Chrome in GitLab QA

What are the relevant issue numbers?

See discussion in !11639 (closed)

Closes gitlab-qa#45 (closed)
Closes gitlab-qa#48 (closed)

mentioned in merge request !11639 (closed)

@rymai Please review, thanks!

assigned to @rymai

This MR supersedes !11639 (closed) /cc @stanhu

changed milestone to %9.2

mentioned in issue gitlab-qa#48 (closed)

changed the description

mentioned in issue #30876 (moved)

Does this really work now? Great!

@stanhu It does! It is not fully headless yet, but we indeed use Chrome which is good.

@grzesiek Thanks! Spec failures, though. :)

assigned to @grzesiek

added 60 commits

• 0094e27f...ec2130be - 58 commits from branch master
• 6984c2ee - Use headless chrome instead of webkit via QtWebkit
• 2c33ee9e - Dockerize headless chrome browser for GitLab QA

Compare with previous version

These are transient failures / master failures. I rebased on a green commit I found on master. Let's see if this helps.

assigned to @rymai

@rymai it would be great to merge it soon!

@grzesiek Sure, sorry I was off before today! :)

@grzesiek LGTM, two questions! :)

assigned to @grzesiek

@rymai I answered your questions! Sorry, I didn't notice you where off, will check on Slack the next time

assigned to @rymai

resolved all discussions

approved this merge request

@grzesiek Thanks, looks good to me!

merged

mentioned in commit 9516c929

mentioned in issue #33450 (closed)

Picked into 9-2-stable; will go into v9.2.6.

/cc @selfup @ClemMakesApps @kushalpandya

mentioned in commit 1262fb6f

mentioned in issue #33538 (closed)