Ethernet service related files are going to be moved into Connectivity module. So, NetdService won't be visible to EthernetTracker since it's a hidden class. Alternatively, get the INetd instance from system service instead. Bug: 210586283 Test: atest FrameworksNetTests Test: atest EthernetServiceTests Change-Id: Iea021ac25cbe4b8836fdab2cd6b4bd3ead5bf725