Remove timeout in async_test for html tests

[qiuzhong]

Remove all the timeout in async_test for html tests.
Affected tests: 125
Before: Pass: 64, Failed: 61
After: Pass: 64, Failed: 61
Related: #11120

[foolip]

Travis has failed because "No output has been received in the last 10m0s". However, wpt-chrome-dev-stability and wpt-firefox-nightly-stability on Taskcluster passed, so at least the tests aren't flaky.

I do wonder if any of them are slow though. Looking at https://queue.taskcluster.net/v1/task/Vw3E0As5R1W9TebRCNcLxQ/runs/0/artifacts/public/results/wpt_report.json.gz I see that /html/browsers/browsing-the-web/navigating-across-documents/010.html took 15 seconds. @qiuzhong, can you check if any other tests are made slow, and was that test in particular made slower with this change?

[jdm]

I saw those "no output" errors on several of the PRs removing the test-specific timeout values.

[jgraham]

It happens more now because we filtered out a lot of the process output from Firefox in order to avoid overflowing the logs, but the flip side is we experience more timeouts. If we wanted to fix it we'd presumably have to arrange for a periodic ping to be logged.

[foolip]

With #14096 merged it should be possible to just rebase this or otherwise retrigger checks.

[qiuzhong]

Found lots of errors like this:

Traceback (most recent call last):
  File "/home/test/web-platform-tests/tools/wptserve/wptserve/handlers.py", line 310, in __call__
    rv = self.func(request, response)
  File "/home/test/web-platform-tests/html/semantics/embedded-content/media-elements/track/track-element/cors/support/cors-tester.py", line 36, in main
    line = 'cors = ' + cors + ' | cookie = ' + cookie.value;
AttributeError: 'str' object has no attribute 'value'

[foolip]

Can you also remove the undefined arguments? They were only there to make it possible to pass in the second argument.

[qiuzhong]

Sure. I'll remove all of them.

[foolip]

Thanks @qiuzhong, one down, a few more PRs to go :)

[foolip]

https://tools.taskcluster.net/groups/DWgMz-OFQOKp5iktSe1gSg unfortunately failed so a clean before/after diff view for this PR isn't possible.

[foolip]

Filed #14207 for the fact that Taskcluster is failing. Once there's another working run I'll compare, but then more changes will be lumped in.

[foolip]

That's been resolved, here are diff views that includes the changes in this PR and more:
https://wpt.fyi/results/html?product=chrome%4039e6009b92&product=chrome%405438f72ea0&diff
https://wpt.fyi/results/html?product=firefox%4039e6009b92&product=firefox%405438f72ea0&diff

Just one seeming regression:
https://wpt.fyi/results/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_escaping-1.html?product=chrome%4039e6009b92&product=chrome%405438f72ea0&diff

Not quite regressions, see web-platform-tests/wpt.fyi#796:
https://wpt.fyi/results/html/semantics/scripting-1/the-script-element/module/dynamic-import/no-active-script-manual-classic.html?product=chrome%4039e6009b92&product=chrome%405438f72ea0&diff
https://wpt.fyi/results/html/semantics/scripting-1/the-script-element/module/dynamic-import/no-active-script-manual-module.html?product=chrome%4039e6009b92&product=chrome%405438f72ea0&diff
https://wpt.fyi/results/html/semantics/scripting-1/the-script-element/module/dynamic-import/no-active-script-manual-classic.html?product=firefox%4039e6009b92&product=firefox%405438f72ea0&diff
https://wpt.fyi/results/html/semantics/scripting-1/the-script-element/module/dynamic-import/no-active-script-manual-module.html?product=firefox%4039e6009b92&product=firefox%405438f72ea0&diff

[foolip]

Ah, but iframe_sandbox_popups_escaping-1.html wasn't modified, so that's probably a flaky test.