I am sandboxed but with "allow-scripts allow-popups allow-same-origin".
  After my initial load, "allow-same-origin" is removed and then I open file_iframe_sandbox_k_if9.html
  in 3 different ways, which attemps to call a function in my parent.
  This should succeed since the new sandbox flags shouldn't have taken affect on me until I'm reloaded.
  open window
  open window
  Now navigate to file_iframe_sandbox_k_if1.html to do tests for a sandbox opening a window
  when only "allow-scripts allow-popups" are specified.
  navigate to if1