2010-12-22 Dirk Pranke <dpranke@chromium.org>

2010-12-22  Dirk Pranke  <dpranke@chromium.org>

        Reviewed by Ojan Vafai.

        nrwt multiprocessing - start over, prepare to fork the code

        This code cleans up the signatures and implementation of the
        TestRunner class so we can easily fork it to run either the
        stable implementation or the new, unstable message-passing
        implementation. The two variants will have different
        implementations of the run_tests() method. We will switch
        between the two based on the setting for the '--worker-model'
        switch. We rename the two currently valid values to 'old-inline'
        and 'old-threads'.

        https://bugs.webkit.org/show_bug.cgi?id=51081

        * Scripts/webkitpy/layout_tests/run_webkit_tests.py:
        * Scripts/webkitpy/layout_tests/run_webkit_tests_unittest.py:

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@74523 268f45cc-cd09-0410-ab3c-d52691b4dbfc