am 107339cc: am 5b4d2a7a: Merge "Add missing initializtaion of last_gc_time_ns_."
am 107339cc: am 5b4d2a7a: Merge "Add missing initializtaion of last_gc_time_ns_."

* commit '107339cc96497c1403dcb57f68c07d3c0d9e03e0':
  Add missing initializtaion of last_gc_time_ns_.

treadstoneproject/artinst,treadstoneproject/artinst,treadstoneproject/artinst,treadstoneproject/artinst,treadstoneproject/artinst