IframeIo manual tests:
  All operations should have no effect on history.
  
  These tests require the ClosureTestServer
  to be running with the IframeIoTestServlet.
  Simple GET
  Simple POST
  JSON echo (get)
  JSON echo (post)
  Test abort
  Incremental results
  Redirect (google.com)
  Redirect (/iframeio/ping)
  Local request (Win path)
  Local request (Linux path)
  Out of domain request
  Test cache (Date should stay the same for subsequent tests)
  Test no-cache
  GSE 404 Error
  Simulated GFE Error
  Simulated Gmail Server Error
TODO(pupius):
- Local timeout