nrwt: fix mock port

nrwt: fix mock port
https://bugs.webkit.org/show_bug.cgi?id=90500

Reviewed by Ojan Vafai.

The MockDRT code was never updated when we switched the chromium
ports to using "drt mode" by default. This change updates that
code, fixes a typo in the chromium port that went undetected
(default_test_timeout_ms -> default_timeout_ms), and adds tests
that actually exercise some of the mock ports. These tests are
useful in that they will exercise the port-specific code in an
end-to-end-manner, but they are a bit slow for some reason (>1s
each) that I need to look into.

* Scripts/webkitpy/layout_tests/port/chromium.py:
(ChromiumDriver.stop):
* Scripts/webkitpy/layout_tests/port/chromium_android.py:
(ChromiumAndroidPort.default_timeout_ms):
* Scripts/webkitpy/layout_tests/port/chromium_android_unittest.py:
(TestChromiumAndroidPort.test_default_timeout_ms):
* Scripts/webkitpy/layout_tests/port/mock_drt.py:
(main):
(parse_options):
(MockTestShell):
(MockTestShell.output_for_test):
* Scripts/webkitpy/layout_tests/port/mock_drt_unittest.py:
(MockDRTTest.assertTest):
(MockTestShellTest):
(MockTestShellTest.make_drt):
(MockTestShellTest.test_test_shell_parse_options):
* Scripts/webkitpy/layout_tests/run_webkit_tests_integrationtest.py:
(PortTest):
(PortTest.assert_mock_port_works):
(PortTest.test_chromium_mac_lion):
(PortTest.test_chromium_mac_lion_in_test_shell_mode):
(PortTest.test_qt_linux):
(PortTest.test_mac_lion):

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@121812 268f45cc-cd09-0410-ab3c-d52691b4dbfc