| CONSOLE WARNING: document.registerElement is deprecated and will be removed in M73, around March 2019. Please use window.customElements.define instead. See https://www.chromestatus.com/features/4642138092470272 for more details. |
| Tests that accessing custom elements from an isolated world does not cause worlds to collide and destroy the galaxy. |
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| On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE". |
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| PASS window.testRunner is non-null. |
| PASS did not crash |
| PASS successfullyParsed is true |
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| TEST COMPLETE |
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