RESTRICT AUTOMERGE Prevent size of list changes during mPendingNonWakeupAlarms deliver am: 5504a25a6f

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/1471525

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: I5199a2e3004547d2728c32b733a43106382ad023