.
<rdar://problem/72319946>
Created attachment 420548 [details] Patch
Created attachment 420796 [details] Patch
Created attachment 420892 [details] Patch
Created attachment 420894 [details] Patch
Comment on attachment 420894 [details] Patch Same as last time, would be good to get an Andy review post-hoc, but the mechanics seem fine and no glaring horrors.
Created attachment 420905 [details] Patch
Created attachment 420920 [details] Patch
Found 30 new test failures: compositing/geometry/fixed-position-composited-page-scale-smaller-than-viewport.html, css3/calc/transforms-translate.html, http/tests/inspector/paymentrequest/payment-request-internal-properties.https.html, http/tests/paymentrequest/page-cache-closed-payment-request.https.html, http/tests/paymentrequest/page-cache-completed-payment-response.https.html, http/tests/paymentrequest/page-cache-created-payment-request.https.html, http/tests/paymentrequest/page-cache-created-payment-response.https.html, http/tests/paymentrequest/page-cache-interactive-payment-request.https.html, http/tests/paymentrequest/page-cache-retried-payment-response.https.html, http/tests/paymentrequest/payment-address-attributes-and-toJSON-method.https.html ...
Committed r273143: <https://commits.webkit.org/r273143> All reviewed patches have been landed. Closing bug and clearing flags on attachment 420920 [details].