To test Chrome with the new behavior, launch with the following command line flags: $ google-chrome --flag-switches-begin --enable-features=LegacySymantecPKI

To test Chrome with the new behavior, launch with the following command line flags: $ google-chrome --flag-switches-begin --enable-features=LegacySymantecPKI --flag-switches-end Feature flags are global, so make sure that you are launching a new instance of chrome and not opening a new window in an existing instance. Note that a domain's certificate validation status is cached, so you may need to clear history or use incognito mode to test the new business logic. If you need to re-enable the old behavior after version M70 is released, use the following command line flags: $ google-chrome --flag-switches-begin --disable-features=LegacySymantecPKI --flag-switches-end These command line flags are undocumented and may change at any time.