The constant DISABLE_NETWORK_PREDICTION_FLAG="--disable-features=NetworkPrediction" doesn't work correctly because CommandLineFlags.Add() expects the input to not include "--" character for the switch name and hence doesn't interpret the input correctly.
This has not been working for quite some time now. I believe this flag can just be removed.
Comment 1 by bugdroid1@chromium.org
, Dec 19 2017