Merge "MediaCodec: add onMetricsFlushed callback API" into main am: bf13e461b5 am: f47a9075b7

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/3341657

Change-Id: I55ab76cda4fa46f6cb8d3d00c540ebf63df2202a
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>