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

Merge "Force garbage collection after credential verification" into rvc-dev am: 612d9e85 am: 49f0c439 am: 33df8885 am: c51bdfa8

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

Change-Id: I5d1bd1d08204d74644059c2d627fad867bc320a1