Merge "[NS04] Introduce Network Offers and their callbacks" am: 393e7b3d6a am: 02e05de21f

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/1556102

Change-Id: Ifc7c32e77a4aa7c183b0d074a8d04fe95a54d288
tree: f7ed7c71403d89a3f3d08744d2497d1dfaceaf1b
  1. framework/
  2. service/
  3. tests/
  4. OWNERS
  5. TEST_MAPPING