map() iterable objects cannot be converted to json, masp should be converted to list.
Created attachment 387699 [details] Patch
Committed r254543: <https://trac.webkit.org/changeset/254543>
<rdar://problem/58586416>
The commit-queue encountered the following flaky tests while processing attachment 387699 [details]: editing/spelling/spellcheck-attribute.html bug 206178 (authors: g.czajkowski@samsung.com, mark.lam@apple.com, and rniwa@webkit.org) The commit-queue is continuing to process your patch.
The commit-queue encountered the following flaky tests while processing attachment 387699 [details]: media/track/track-cues-sorted-before-dispatch.html bug 206225 (authors: simon.pena@samsung.com and vcarbune@chromium.org) The commit-queue is continuing to process your patch.