kmswebrtcendpoint: use kms_utils_get_time_nsecs
kmswebrtcendpoint: use kms_utils_get_time_nsecs

Change-Id: If3ca10881f42039880348871081f377f81a4d640

shelsonjava/kms-elements,TribeMedia/kms-elements,TribeMedia/kms-elements,shelsonjava/kms-elements,TribeMedia/kms-elements,shelsonjava/kms-elements