Automatic update from web-platform-tests [wpt] Fix testdriver.js portability issues in `digital-credentials/` Some testdriver.js implementations use `postMessage()` to send testdriver commands from a cross-origin iframe to the testharness browsing context. [0] and [1] must be respected for testdriver.js to work in those environments. This is a no-op change when running the tests with content shell, which implements testdriver.js with nonstandard JS bindings. [0]: https://web-platform-tests.org/writing-tests/testdriver.html#using-test-driver-in-other-browsing-contexts [1]: https://web-platform-tests.org/writing-tests/testdriver.html#markup: > The testdriver.js and testdriver-vendor.js must both be included ... > in the top-level test document when using testdriver from a different > context Bug: None Change-Id: Idacd0b65d03d4feb77883927a5d90e61eb59797b Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5922668 Reviewed-by: Weizhong Xia <weizhong@google.com> Commit-Queue: Jonathan Lee <jonathanjlee@google.com> Cr-Commit-Position: refs/heads/main@{#1370211} -- wpt-commits: f29200eabb447101ecbb2681aee9d57b7cac1a87 wpt-pr: 48681