Tests for SameSite=strict enforcement based on top frame unique redirects to.

On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE".


PASS Cookie was not SameSite=strict before test.
PASS Cookie was SameSite=strict after first test.
PASS Cookie was not SameSite=strict after second test.
PASS successfullyParsed is true

TEST COMPLETE