Merge "Update FLAG_ONLY_ALERT_ONCE docs" am: e3a1682e0b am: bd0f7d47eb

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/2062847

Change-Id: I535584d91df8b54026a2af0c78b03a0bfb3da4af
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>