Bug 989263 - Reduce Developer HUD polling frequency for USS. r=21
Bug 1046026 - Part 1: Deprecate the Optional Property |isDiskFull| in MobileMessageDB. r=vyang
Bug 1046026 - Part 2: Check failure cause according to |event.target.error.name|. r=vyang
Bug 1046026 - Part 3: Remove the redundant function name from the implementation of EventHandler. r=vyang
Bug 1046026 - Part 4: Update threads at once after all messages are deleted. r=vyang
Bug 1046026 - Part 5: Re-write test cases with 'disk-space-watcher' notification. r=vyang
Bug 1048833 - Prevent unnecessary SpecialPowers loading. r=dburns