Bug 993041 - Create one instance of the GonkGPSGeolocationProvider. r=dougt
Bug 992944 - Spell checker skips current locale when pref spellchecker.dictionary or document content invalid. r=ehsan
Bug 984101 - Undo some of our more aggressive new poisoning to get back performance. r=jonco
Bug 984075 - Extract arrow widget from GtkMenuButton widget instead of creating it directly which gives us proper arrow size. r=karlt