Remove main thread sendBroadcast calls

sendBroadcast ends up with a synchronous Binder call which can block main thread. This moves multiple broadcast calls to background thread to avoid jank.

Bug: 234306007
Bug: 221339831
Test: Unit tests
Change-Id: Ibfb7ea6302a0723c5c01cae3afe4e66395cd1f50
Merged-In: Ibe76a70e08c9bfefc7ff23806089957f17514c31
2 files changed