DO NOT MERGE Add API for file origin policy.
DO NOT MERGE Add API for file origin policy.

Bug: 6212665

Add hidden websettings api for configuring file origin policy.

Change-Id: I261ba6369fe606ca76f87c6a00d1168b44bcf1ab

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