widget/headless/tests

Name	Description	Size
headless.html		178
headless_button.html		144
moz.build		335
test_headless.js	-- Mode: indent-tabs-mode: nil; js-indent-level: 2 --	7014
test_headless_clipboard.js	-- Mode: indent-tabs-mode: nil; js-indent-level: 2 --	1201
xpcshell.toml		194