Move shared methods and constants from Proxy to shared lib

Proxy is moving into connectivity mainline and its hidden methods
are not accessible outside the module. Thus, move the shared
methods and constants to ProxyUtils to share between module and
platform.

Bug: 172183305
Test: atest FrameworksNetTests
Test: atest CtsNetTestCases:ProxyInfoTest
Change-Id: I7153ce4e77b80964ffad67254b6329973ed61f30
1 file changed
tree: 8d1f2ad044cc6943d7a92e3ddab49f9a5d4ffcab
  1. staticlibs/