Bug 1421724 - Disable browser_devices_get_user_media_screen.js on Windows coverage builds until it is fixed. r=achronop

browser/base/content/test/webrtc/browser.ini

@@ -13,6 +13,7 @@ skip-if = debug # bug 1369731
 [browser_devices_get_user_media_multi_process.js]
 skip-if = debug && (os == "win" || os == "mac") # bug 1393761
 [browser_devices_get_user_media_screen.js]
+skip-if = (os == "win" && ccov) # bug 1421724
 [browser_devices_get_user_media_tear_off_tab.js]
 [browser_devices_get_user_media_unprompted_access.js]
 [browser_devices_get_user_media_unprompted_access_in_frame.js]