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/bench/bench.py

@@ -0,0 +1,12 @@
+import sys
+
+if __name__ == '__main__':
+    import cProfile
+    import pytest
+    import pstats
+    script = sys.argv[1:] if len(sys.argv) > 1 else "empty.py"
+    stats = cProfile.run('pytest.cmdline.main(%r)' % script, 'prof')
+    p = pstats.Stats("prof")
+    p.strip_dirs()
+    p.sort_stats('cumulative')
+    print(p.print_stats(500))