Merge "Move receiver registration to background thread" into tm-qpr-dev am: e75afe61

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/20442059



Change-Id: Ie340141c80a13bceb89b5d3de6a492078a03986f
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>