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

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

Change-Id: Ifcdc55f7b202b9fe1ea10c9546c07d4563e9988c
tree: f7ed7c71403d89a3f3d08744d2497d1dfaceaf1b
  1. framework/
  2. service/
  3. tests/
  4. OWNERS
  5. TEST_MAPPING