Merge changes from topic "pacproxy-service"

* changes:
  Make PacProxyService be a system service
  Revert^2 "Refactor setCurrentProxyScriptUrl to a void method"
tree: fdfc6a2f1dcc1e83c3570f22bbed6f92d64f02fc
  1. framework/
  2. service/
  3. OWNERS