Merge "Protect account chooser activities against overlay." into qt-dev am: 7f2257fa0f

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/13191817

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: I2f86ac2f6302f63f1dc3d11d93c1a99434ec4fb6