GitLab

Intent to Deprecate and Remove:
https://groups.google.com/a/chromium.org/d/msg/blink-dev/m4DNZbLMkRo/9fzhqNwqBQAJ

Because this is also supported in Edge 15 and exists in WebKit's IDL,
add an historical.html test covering this and other non-standard
features that existed or still exist in Blink, but are no longer in the
spec, annotated here:
https://chromium.googlesource.com/chromium/src/+/e70c6e15ba896a2e88d0dc05f1a20fb3d4befabf

Bug: 698163
TBR: timvolodine@chromium.org
Change-Id: If8eac7005a652c000d34f12c48bd04194e1e215e
Reviewed-on: https://chromium-review.googlesource.com/597668
Commit-Queue: Philip Jägenstedt <foolip@chromium.org>
Reviewed-by: Guido Urdaneta <guidou@chromium.org>
Cr-Commit-Position: refs/heads/master@{#491997}