Tests updating request URL to a cross-origin one.
Initial navigation
http://domain1.test:8080/inspector-protocol/resources/image.html => http://domain2.test:8080/inspector-protocol/resources/image.html
http://domain1.test:8080/inspector-protocol/resources/image.png => http://domain2.test:8080/inspector-protocol/resources/image.png
Anchor navigation
http://domain1.test:8080/inspector-protocol/resource/empty.html => http://domain2.test:8080/inspector-protocol/resource/empty.html