Merge "SystemClock: elapsedRealtimeNano() should use clock_gettime() on Linux"
am: e3ff256228

* commit 'e3ff25622840e8b79e30f7f8bda4715a103afb67':
  SystemClock: elapsedRealtimeNano() should use clock_gettime() on Linux

Change-Id: Id5a10854412308fb096a037977eea5e80931e1f8