Merge "Add support to update the throttle time of silent updates" into sc-dev...

Merge "Add support to update the throttle time of silent updates" into sc-dev am: b55a5da7 am: d8ba9c26 am: 646968a4

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/14909659

Change-Id: I338d91761d2c917ae2c7cd7346f2b4e5db2f0a6a