After updating Chrome to version 76, I cannot figure out how to hide the \"Chrome is being controlled by automated software...\" notification overriding some controls on the
Apparently you can use the CommandLineFlagSecurityWarningsEnabled chrome policy - https://www.chromium.org/administrators/policy-list-3#CommandLineFlagSecurityWarningsEnabled
On Linux I was able to create a file at /etc/opt/chrome/policies/managed/managed_policies.json with the contents: {"CommandLineFlagSecurityWarningsEnabled": false} and this disabled the warning.
On Windows 10 Pro when I set the Chrome group policy "Enable security warnings for command-line flags" to disabled (see https://support.google.com/chrome/a/answer/187202) and check the registry at Software\Policies\Google\Chrome\CommandLineFlagSecurityWarningsEnabled for a value of 0x00000000 it doesn't work for me to disable this warning. Maybe it will for you? Wondering if someone else can help shed light on why it won't work on Windows