IDL parser: Drop support of 'implements'

'implements' keyword is no longer usable in Blink IDL.


Bug: 781257
Change-Id: If3e5fa4cfb7ca87072c18f9b4e8be20fd897f1ce
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1556854
Commit-Queue: Hitoshi Yoshida <peria@chromium.org>
Reviewed-by: Kentaro Hara <haraken@chromium.org>
Reviewed-by: Kenichi Ishibashi <bashi@chromium.org>
Reviewed-by: Yuki Shiino <yukishiino@chromium.org>
Cr-Original-Commit-Position: refs/heads/master@{#648866}
Cr-Mirrored-From: https://chromium.googlesource.com/chromium/src
Cr-Mirrored-Commit: b7ba8f52be85b27c0a4fc42845a8ac5859623acf
5 files changed