run_webkit_tests.py should only parse the iOS Simulator command line options --runtime and --device-type. The IOSSimulatorPort object should be responsible for validating these parsed values and instantiating internal data structures to represent them.
Created attachment 246750 [details] Patch
Comment on attachment 246750 [details] Patch Clearing flags on attachment: 246750 Committed r180238: <http://trac.webkit.org/changeset/180238>
All reviewed patches have been landed. Closing bug.