Merge "Revert "Default 'persist.sys.timezone' property to GMT if not set on init."" am: 9b9e823096 am: 7dc29d076f am: 18eb3b4ff1 am: 2b923c07a7
am: 29b8db4340

Change-Id: Ie88f814fe61748b8a9ae0cd2cd651ad9e5239fb1