If the policy is enabled, each of the named origins in a
comma-separated list will run in its own process. This will also isolate
origins named by subdomains; e.g. specifying https://example.com/ will
also cause https://foo.example.com/ to be isolated as part of the
If the policy is not configured or disabled, the user will be able to change this setting.
NOTE: This policy does not apply on Android. To enable IsolateOrigins on Android, use the IsolateOriginsAndroid policy setting.
Example value: https://example.com/,https://othersite.org/