Sets the AdditionalBrowserArguments property.

Please note that calling this API twice will replace the previous value rather than appending to it. If there are multiple switches, there should be a space in between them. The one exception is if multiple features are being enabled/disabled for a single switch, in which case the features should be comma-seperated. Ex. "--disable-features=feature1,feature2 --some-other-switch --do-something"