Merge "Revert "Prevent exfiltration of system files via avatar picker."" into tm-dev am: 95e397a8

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/19436694



Change-Id: I4cb48212ba44da33fbc6a423862e35bc6ca54efa
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>