Merge "MediaCodec: Implement onMetricsFlushed callback" into main am: 4050d40172

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/3343580

Change-Id: Icc825a0ee498995df72ce287d5e220497f584e15
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>