[automerger skipped] Make System.nanoTime and currentTimeMillis critical native. am: a09e0fb8d2 am: 602fe06d45 am: 0e2b8fb424 -s ours

am skip reason: Change-Id I2542cde6a62e28bb59cf0f683c4cce6ae8b4d476 with SHA-1 a09e0fb8d2 is in history

Original change: https://googleplex-android-review.googlesource.com/c/platform/libcore/+/11221162

Change-Id: If245581ab7fd87c6cb1e97593e72ca88df4ae188