Revert "Refactor setCurrentProxyScriptUrl to a void method"

This reverts commit 20384eeaf1a636a7787fbf1d83b2bb2c94f5a677.

Reason for revert: Broke HostsideVpnTests

Fix: 177943140
Change-Id: I23924181e46fd1f16a60ec420426d1ed39705050
2 files changed