Merge "Use monotonic system time instead of gettimeofday" into tm-dev am: 196cbfb46c am: 05f861b84d am: c7ed175f17

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/av/+/17783343

Change-Id: Id5664c84f8fae17adc8a70e33552a653ac932e51
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>