Merge "libbinder: LazyServiceRegistrar documentation" am: 02d7e69f93 am: 7baa467475 am: 5dfc123171 am: cbaca0bc20 am: 6b478abaf8

Original change: https://android-review.googlesource.com/c/platform/frameworks/native/+/1391126

Change-Id: Ic7ce4ead75c716c4e141cffb951920dd17c54bae