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a5b02047f9
The structured cloning with transfer list https://html.spec.whatwg.org/multipage/#structuredserializewithtransfer throws a "DataCloneError" DOM expection by default if serialization/transferral is not possible, but a platform object can throw a custom excepton on its serialization/transfer steps. One example is OffscreenCanvas, which can throw an "InvalidStateError" exception if the context mode is not none on transfer steps. https://html.spec.whatwg.org/multipage/#the-offscreencanvas-interface:transfer-steps Testing: Improvements in the following tests - html/canvas/offscreen/manual/the-offscreen-canvas/offscreencanvas.transferrable* Fixes: #37919 Signed-off-by: Andrei Volykhin <andrei.volykhin@gmail.com>