Spec has updated so that all responses that aren't 200 shall fail the
event source connection.
Testing: Covered by
`tests/wpt/tests/eventsource/request-status-error.window.js`
---------
Signed-off-by: Keith Yeung <kungfukeith11@gmail.com>
Spec has updated so that any null characters in the `id` field name
would result in the value being ignored.
Testing: Covered by
`tests/wpt/tests/eventsource/format-field-id-null.window.js`
Signed-off-by: Keith Yeung <kungfukeith11@gmail.com>
Most tests were only being run for layout-2013, not for layout-2020.
This wasn't great since layout-2020 is now the default.
So this patch unifies the lists of included tests for both layouts.
For layout-2013 this implies adding css/css-content/, css/css-logical/
and css/css-masking/clip/.
For layout-2020 this implies adding several additional css tests, and
also tests like dom/, js/, html/, etc.
