Tests Overlay domain commands when navigating an OOPIF subframe to another OOPIF.
Navigating to first OOPIF...
Attached to subframe.
First highlight result: {
    id : <number>
    result : {
    }
    sessionId : <string>
}
Navigating to second OOPIF...
Navigated to second OOPIF.
Second highlight result: {
    id : <number>
    result : {
    }
    sessionId : <string>
}