Merge "Add optional emitFirstEvent param to setChanges()" into tm-qpr-dev am: 6451a04d78 am: 272a3cf8f4

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/19776116

Change-Id: Iaa2b6a93fe70ada662ef4d2137b6a303cc910c7a
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>