testing/web-platform/tests/html/semantics/embedded-content/the-iframe-element/support/iframe-tried-to-be-navigated-by-its-child.html


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<!DOCTYPE html>
<p>If this message appears, then this frame has not been navigated by its child.</p>
<iframe src="iframe-that-tries-to-navigate-parent-and-sends-result-to-grandparent.html">
</iframe>