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

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

Change-Id: I5daf321b0e43de1aa52ebbe1ea441dcd5a7f2b96
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>