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This is a reland of e1dce34f

Original change's description:
> bind-gen: Switch to the new IDL interface implementation
>
> Blink-V8 bindings team has been developing the new improved
> Web IDL bindings system, and this patch enables the new
> bindings implementation of Web IDL interfaces at build time.
>
> Note that other IDL definitions (buffer source types,
> dictionaries, callback functions, etc.) are not affected and
> the old bindings are still used for them.
>
> The new IDL interface implementation is not 100% compatible
> with the old one, and we see the following changes/improvement
> that are visible from author script.
>
> Behavioral changes:
> - Cross origin attributes become accessor properties.
> - Indexed/named properties' behaviors change.
> - Legacy platform objects with indexed properties support
>   @@iterator property.
> - Maplike supports size() operation.
> - [NoInterfaceObject] removes 'constructor' property.
> - Some of error messages change.
> For these changes, new behaviors are better conforming to
> Web IDL specification.
>
> Non-behavioral changes:
> - Keep-alive-GC optimization is removed.
>
> For performance, there is no major difference in speed perf
> and -17KB improvement in APK binary size.
>
> Pinpoint results
> https://pinpoint-dot-chromeperf.appspot.com/job/1230bdd8920000
> https://pinpoint-dot-chromeperf.appspot.com/job/14b5b5d0920000
> https://pinpoint-dot-chromeperf.appspot.com/job/12ca6424920000
> https://pinpoint-dot-chromeperf.appspot.com/job/14e3aa48920000
>
> Bug: 839389
> Change-Id: I9de8de3cc9e37b4ee46333c9270fe49bbdd69534
> Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2081633
> Commit-Queue: Yuki Shiino <yukishiino@chromium.org>
> Reviewed-by: Kent Tamura <tkent@chromium.org>
> Reviewed-by: Kentaro Hara <haraken@chromium.org>
> Reviewed-by: Hitoshi Yoshida <peria@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#793165}

About perf:
APK size +7KB
https://pinpoint-dot-chromeperf.appspot.com/job/143264c6920000
https://pinpoint-dot-chromeperf.appspot.com/job/174ee7a9920000
https://pinpoint-dot-chromeperf.appspot.com/job/175f8f66920000

Bug: 839389
Change-Id: Ib5a486eba6627d3dcb40efc3a617c90511645b1b
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2335713
Commit-Queue: Yuki Shiino <yukishiino@chromium.org>
Reviewed-by: Kent Tamura <tkent@chromium.org>
Reviewed-by: Kentaro Hara <haraken@chromium.org>
Reviewed-by: Hitoshi Yoshida <peria@chromium.org>
Cr-Commit-Position: refs/heads/master@{#798235}