Merge "PowerLog: Update interface and tests for log plot" am: 8f07e9c178 am: 5e458bd45b am: 88bc4095ff

Original change: https://android-review.googlesource.com/c/platform/system/media/+/1627059

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: I59c41b7df5f11bb49f38063600967f7d7b29e1d7