2011-01-19 Dirk Pranke <dpranke@chromium.org>

2011-01-19  Dirk Pranke  <dpranke@chromium.org>

        Reviewed by Mihai Parparita.

        new-run-webkit-tests: remove use of os.walk, use mock filesystem for better
        unit testing. os.walk() is too much of a hassle to implement on
        top of the in-memory mock filesystem and adding the necessary
        interface to files_under() gives clients a cleaner API anyway
        (for this particular usage model).

        https://bugs.webkit.org/show_bug.cgi?id=52691

        * Scripts/webkitpy/common/system/filesystem.py:
        * Scripts/webkitpy/common/system/filesystem_mock.py:
        * Scripts/webkitpy/layout_tests/port/test_files.py:
        * Scripts/webkitpy/layout_tests/port/test_files_unittest.py:

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@76155 268f45cc-cd09-0410-ab3c-d52691b4dbfc