Tests that Target.targetInfoChanged is dispatched for auto-attached targets.
{
    attached : true
    browserContextId : <string>
    canAccessOpener : false
    parentFrameId : <string>
    parentId : <string>
    targetId : <string>
    title :
    type : iframe
    url :
}
{
    targetInfo : {
        attached : true
        browserContextId : <string>
        canAccessOpener : false
        parentFrameId : <string>
        parentId : <string>
        targetId : <string>
        title : http://devtools.oopif-a.test:8000/inspector-protocol/resources/inspector-protocol-page.html
        type : iframe
        url : http://devtools.oopif-a.test:8000/inspector-protocol/resources/inspector-protocol-page.html
    }
}
{
    targetInfo : {
        attached : true
        browserContextId : <string>
        canAccessOpener : false
        parentFrameId : <string>
        parentId : <string>
        targetId : <string>
        title : http://devtools.oopif-a.test:8000/inspector-protocol/resources/inspector-protocol-page.html?foo
        type : iframe
        url : http://devtools.oopif-a.test:8000/inspector-protocol/resources/inspector-protocol-page.html?foo
    }
}