ImageBitmap::createImageBuffer has been updated to determine the appropriate GraphicsClient for the thread from the ScriptExecutionContext, and uses that when allocating buffers, so that we get GPUP backed image buffers for workers.
<rdar://problem/102731039>
Pull request: https://github.com/WebKit/WebKit/pull/6880
Committed 257520@main (ec74fcfe2fee): <https://commits.webkit.org/257520@main> Reviewed commits have been landed. Closing PR #6880 and removing active labels.