https://www.w3.org/TR/appmanifest/#the-display-mode-media-feature
<rdar://problem/35837993>
Created attachment 328398 [details] Patch Patch for review
Created attachment 328534 [details] Patch v2 Rebased, updated the way ApplicationManifestParser parses the JSON.
Comment on attachment 328534 [details] Patch v2 r=me
Created attachment 328676 [details] Patch for landing
Created attachment 328696 [details] Patch for landing (v2) Attempt to fix the EWS errors.
Comment on attachment 328696 [details] Patch for landing (v2) Clearing flags on attachment: 328696 Committed r225639: <https://trac.webkit.org/changeset/225639>
All reviewed patches have been landed. Closing bug.