Currently, `./mach test-wpt` family of commands (`test-wpt`,
`test-wpt-android`, and `test-wpt-failure`) and `./mach update-wpt`
default to using the legacy-layout option `--layout-2013` unless
`--layout-2020` is specified.
Given that we are now using layout-2020 by default, this change updates
these commands to default to using the `--layout-2020` option instead of
`--layout-2013`.
This change moves all of Servo's WPT Python support scripts into one
directory as they were previously scattered throughout the directory
structure. This should allow more code reuse and make it easier to
understand how everything fits together.
The changes:
- `tests/wpt/update` → `python/wpt/importer`
- `etc/ci/upstream-wpt-changes/wptupstreamer` → `python/wpt/exporter`
- `etc/ci/upstream-wpt-changes/test.py` → `python/wpt/test.py`
- `etc/ci/upstream-wpt-changes/tests` → `python/wpt/tests`
- `tests/wpt/servowpt.py` →
- `python/wpt/update.py`
- `python/wpt/run.py`
- `tests/wpt/manifestupdate.py` → `python/wpt/manifestupdate.py`
This change also removes
- The ability to run the `update-wpt` and `test-wpt` commands without
using `mach`. These didn't work very well, because it was difficult
to get all of the wptrunner and mach dependencies installed outside
of the Python virtualenv. It's simpler if they are always run through
`mach`.
- The old WPT change upstreaming script that was no longer used.
