This gecko integration code is better managed with the other devtools platform
hook code. To simplify resolving the JSM and avoiding issues around restricted
use of eval in chrome, I also reset the DIST_SUBDIR config and run the xpcshell
tests without a firefox-appdir. The test works on Android these days, so
re-enable it on that platform.
Differential Revision: https://phabricator.services.mozilla.com/D157522
When we move this out of the js/ directory, a number of lint exceptions stop
applying so we should just fix the issues now.
Differential Revision: https://phabricator.services.mozilla.com/D157521