| CONSOLE MESSAGE: Unsafe JavaScript attempt to initiate navigation for frame with URL 'http://127.0.0.1:8000/security/block-top-level-navigations-by-sandboxed-iframe-with-propagated-user-gesture.html' from frame with URL 'http://localhost:8000/security/resources/navigate-top-level-frame-to-failure-page-via-message-handler.html'. The frame attempting navigation of the top-level window is sandboxed, but the 'allow-top-navigation' flag is not set. |
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| CONSOLE MESSAGE: SecurityError: The operation is insecure. |
| Test blocking of top-level navigations by an iframe with `sandbox=allow-top-navigation-by-user-activation` when the user gesture is propagated from another context. |
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| On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE". |
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| PASS All navigations by subframes have been blocked |
| PASS successfullyParsed is true |
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| TEST COMPLETE |
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