Merge "Move Data Stall logic to CS from NetworkMonitorCallbacks." am: 8a38affcbf

Change-Id: I0884098a86de1e96b93dd1c753d7863641f34f0b
tree: 74003507126389e3f578c4c7d0a439e6b20c0f4a
  1. core/
  2. services/
  3. tests/