[automerger skipped] Use monotonic clock instead of wall time clock for...

[automerger skipped] Use monotonic clock instead of wall time clock for metrics. am: ac91c3f7 -s ours

am skip reason: Change-Id I1540cfbf37915e3045ecedaa2595c1f9429bcd62 with SHA-1 958b89c0 is in history

Original change: https://googleplex-android-review.googlesource.com/c/platform/build/soong/+/12463373

Change-Id: I5c0d0cf9fb582cbe82955f72c20e694a1d4107e7