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/extra/setup-py.test/setup.py

@@ -0,0 +1,11 @@
+import sys
+from distutils.core import setup
+
+if __name__ == "__main__":
+    if "sdist" not in sys.argv[1:]:
+        raise ValueError("please use 'pytest' pypi package instead of 'py.test'")
+    setup(
+        name="py.test",
+        version="0.0",
+        description="please use 'pytest' for installation",
+    )