Add pref layout.css.expensive-style-struct-assertions.enabled from http://hg.mozilla.org/mozilla-central/rev/f2b0eb82d21d + http://hg.mozilla.org/mozilla-central/rev/b637dda949c1
Add pref layout.css.expensive-style-struct-assertions.enabled from http://hg.mozilla.org/mozilla-central/rev/f2b0eb82d21d + http://hg.mozilla.org/mozilla-central/rev/b637dda949c1

MozillaSecurity/funfuzz,MozillaSecurity/funfuzz,MozillaSecurity/funfuzz,nth10sd/funfuzz,nth10sd/funfuzz,nth10sd/funfuzz