Merge "Force garbage collection after credential verification" into rvc-dev...

Merge "Force garbage collection after credential verification" into rvc-dev am: 612d9e85 am: e54728c4 am: cb35b60a am: d125dd43

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/12000923

Change-Id: I695a10a641d891bafacd6a4653ce8ba77a1bf53b