Don't perform DNS lookup in android.net.Proxy.isLocalHost
Don't perform DNS lookup in android.net.Proxy.isLocalHost

This fixes degrade introduced by:
Switch to using public APIs instead of private ones.
536ff5a6d700a80dbd75adb737ec4b560fbed2dc

Change-Id: I63cbea82d85d55d933bcfc9e7a311d1aa2324955

xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base