Tests sending of info for iframe with srcdoc which is being written to after a delay
Frame navigated to http://devtools.test:8000/inspector-protocol/page/resources/iframe-srcdoc.html
Frame navigated to about:srcdoc
Document opened, new url: http://devtools.test:8000/inspector-protocol/page/resources/iframe-srcdoc.html
Received information about 2 frame(s).