Support rendering tick marks for range inputs with datalists
This is already supported, I can see the tick marks in Safari. However, the test imported/blink/fast/forms/datalist/slider-appearance-with-ticks-crash.html is failing because we are not checking the input is actually a range control in RenderTheme::paintSliderTicks(). Since this is the bug associated with the test in the expectations, I'll reuse it to fix the test.
Created attachment 391852 [details] Patch
Committed r257623: <https://trac.webkit.org/changeset/257623>
<rdar://problem/59880405>
*** Bug 208315 has been marked as a duplicate of this bug. ***