ShadowRealm: Implement ShadowRealm global object in Blink (6/N)

Supports [Exposed=*] in idl_parser.py.
c.f. https://webidl.spec.whatwg.org/#prod-ExtendedAttributeWildcard

Bug: 1281880
Change-Id: I98c87b846ef33c38f584651a0326edcef8818e7a
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/4066959
Commit-Queue: Yuki Shiino <yukishiino@chromium.org>
Reviewed-by: Kentaro Hara <haraken@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1077451}
NOKEYCHECK=True
GitOrigin-RevId: 926c027c6545f3b23228af7a215d7f12aa54cf0c
2 files changed