Tests that XHR redirects preserve http-method.
PUT http://127.0.0.1:8000/devtools/network/resources/redirect.cgi?status=301&ttl=3
actual http method was: PUT
PUT http://127.0.0.1:8000/devtools/network/resources/redirect.cgi?status=301&ttl=2
actual http method was: PUT
PUT http://127.0.0.1:8000/devtools/network/resources/redirect.cgi?status=301&ttl=1
actual http method was: PUT
PUT http://127.0.0.1:8000/devtools/network/resources/redirect.cgi?status=301&ttl=0
actual http method was: PUT