| This is a testharness.js-based test. |
| PASS Test that an OffscreenCanvas generated by transferControlToOffscreen gets correct width and height |
| PASS Test that calling getContext on a placeholder canvas that has already transferred its control throws an exception |
| PASS Test that calling transferControlToOffscreen twice throws an exception |
| FAIL Verify that resizing an OffscreenCanvas with a 2d context propagates the new size to its placeholder canvas asynchronously, upon commit. assert_equals: expected 30 but got 10 |
| Harness: the test ran to completion. |
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