Boris Chiou c3a3bd48d7 style: Support css use counters for unimplemented properties. ... For developing properties, we will handle them in an other bug. Besides, I use an iframe for the test because we create a use counter in the constructor of Document, which use the prefs to decide what kind of properties we want to record. So, in the test, we have to reload iframe to make sure we re-create the document, so does the use counter, to make sure the prefs work properly. The two prefs affect the css use counters: 1. layout.css.use-counters.enabled: Allocate use counters, and record non-custom properties. 2. layout.css.use-counters-unimplemented.enabled: Record all unimplmented properties into the use counters. If we disable layout.css.use-counters.enblaed, we don't create use counters object, so layout.css.use-counters-unimplemented.enabled doesn't work, either. Differential Revision: https://phabricator.services.mozilla.com/D43860		2019-09-12 22:34:16 +02:00
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mod.rs	style: Support css use counters for unimplemented properties.	2019-09-12 22:34:16 +02:00