Update web-platform-tests and CSS tests.

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

tests/wpt/web-platform-tests/webdriver/conftest.py

@@ -0,0 +1,39 @@
+import os
+
+import pytest
+import webdriver
+
+from util import cleanup
+from util.http_request import HTTPRequest
+
+default_host = "http://127.0.0.1"
+default_port = "4444"
+
+@pytest.fixture(scope="session")
+def _session(request):
+    host = os.environ.get("WD_HOST", default_host)
+    port = int(os.environ.get("WD_PORT", default_port))
+
+    session = webdriver.Session(host, port)
+
+    def destroy():
+        if session.session_id is not None:
+            session.end()
+
+    request.addfinalizer(destroy)
+
+    return session
+
+@pytest.fixture(scope="function")
+def session(_session, request):
+    # finalisers are popped off a stack,
+    # making their ordering reverse
+    request.addfinalizer(lambda: cleanup.switch_to_top_level_browsing_context(_session))
+    request.addfinalizer(lambda: cleanup.restore_windows(_session))
+    request.addfinalizer(lambda: cleanup.dismiss_user_prompts(_session))
+
+    return _session
+
+@pytest.fixture(scope="function")
+def http(session):
+    return HTTPRequest(session.transport.host, session.transport.port)