Merge "Update AlarmManager javadoc for S Beta 3" into sc-dev am: f797f40b am: 5e143e4d am: 7dac5851

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/14922546

Change-Id: Id7747c27f436e3adef9ce8d8865b226ece3b4026