Run Google Chrome with flags (not from chrome://flags)

There are command line flags (or "switches") that Chromium (and Chrome) accept in order to enable particular features or modify otherwise default functionality. - Chromium Command Line Switches - Run Chromium with flags I want to add --sync-url flag to use my sync server instead of Google sync servers. chrome://flags only enable/disable flags but won't let you add a new flag. Tried Chrome 41.0.xx and Chromium 43.0.xxx shell with: # echo "chrome " > /data/local/tmp/android-webview-command-line # echo "chrome " > /data/local/tmp/content-shell-command-line # echo "chrome --sync-url whatever" > /data/local/tmp/chrome-command-line Any idea how to run Chrome with flags on Android or directly add these to the default profile?