Bug: 185256332 Test: TH Change-Id: I77f7551a97d015fe5cc54c053020504f5fb93ab7
Move JNI File descriptor code from NetworkStack into a common native static library. Bug: 158749603 Test: atest NetworkStaticLibTests / treehugger Change-Id: I3d14587ee8e8590b727736d7d2e29cba687e5514