Merge "MediaMetrics: Tune garbage collection" into rvc-dev am: d25de3abde am: 7224614a5a am: 9c7a000add am: d720c32f41

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/av/+/11931278

Change-Id: Iaf5e8a366aba4d34618596b8e8bc2b8d86254eff