Many tests in editing/run use deprecated features

[mysteryDate]

forecolor.html for example is built around "stylewithcss", "queryCommandValue", "queryCommandState". I made a change to chromium that broke this test and spent a day trying to fix it before realizing it was all deprecated behavior. Should we just delete these tests?

[gsnedders]

forecolor.html for example is built around "stylewithcss", "queryCommandValue", "queryCommandState". I made a change to chromium that broke this test and spent a day trying to fix it before realizing it was all deprecated behavior. Should we just delete these tests?

The entire execCommand API ain't great, but I'm unaware of anything deprecating it, and even if it were that doesn't mean we can just remove it and not care about its behaviour. execCommand has a long history of causing web compat problems, so outright deleting tests for it seems pretty unacceptable.