Update web-platform-tests and CSS tests.

- Update CSS tests to revision e05bfd5e30ed662c2f8a353577003f8eed230180.
- Update web-platform-tests to revision a052787dd5c069a340031011196b73affbd68cd9.

tests/wpt/css-tests/tools/pytest/testing/test_genscript.py

@@ -0,0 +1,51 @@
+import pytest
+import sys
+
+
+@pytest.fixture(scope="module")
+def standalone(request):
+    return Standalone(request)
+
+class Standalone:
+    def __init__(self, request):
+        self.testdir = request.getfuncargvalue("testdir")
+        script = "mypytest"
+        result = self.testdir.runpytest("--genscript=%s" % script)
+        assert result.ret == 0
+        self.script = self.testdir.tmpdir.join(script)
+        assert self.script.check()
+
+    def run(self, anypython, testdir, *args):
+        return testdir._run(anypython, self.script, *args)
+
+def test_gen(testdir, anypython, standalone):
+    if sys.version_info >= (2,7):
+        result = testdir._run(anypython, "-c",
+                                "import sys;print (sys.version_info >=(2,7))")
+        assert result.ret == 0
+        if result.stdout.str() == "False":
+            pytest.skip("genscript called from python2.7 cannot work "
+                        "earlier python versions")
+    result = standalone.run(anypython, testdir, '--version')
+    if result.ret == 2:
+        result.stderr.fnmatch_lines(["*ERROR: setuptools not installed*"])
+    elif result.ret == 0:
+        result.stderr.fnmatch_lines([
+            "*imported from*mypytest*"
+        ])
+        p = testdir.makepyfile("def test_func(): assert 0")
+        result = standalone.run(anypython, testdir, p)
+        assert result.ret != 0
+    else:
+        pytest.fail("Unexpected return code")
+
+
+def test_freeze_includes():
+    """
+    Smoke test for freeze_includes(), to ensure that it works across all
+    supported python versions.
+    """
+    includes = pytest.freeze_includes()
+    assert len(includes) > 1
+    assert '_pytest.genscript' in includes
+