r66141 seems to have caused fast/forms/select-style.html to fail on mac:
This regressed because of the *style->backgroundLayers() != background check in RenderTheme.cpp:694, where the style contains a StylePendingImage.
Created attachment 65669 [details]
Comment on attachment 65669 [details]
Looks good to me, r=me.
Simon, I'm going to land this, as it's blocking the mac bots to turn green.
Landed in r66195. Hope it's okay for you.
I'd like to land a larger patch, and want to have all test bots green before doing that.
Thanks for landing!