Merge "Remove hidden API usage of Proxy.validate" am: a4a9e9bb am: 1065160b

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/1552497

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: Id19b29b7140eeaa4d51821045f1b4549719b482c