Add new WebGL prefs from http://hg.mozilla.org/mozilla-central/rev/7d1c223f397c
Add new WebGL prefs from http://hg.mozilla.org/mozilla-central/rev/7d1c223f397c

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