Automatically replace delete statements for private class fields
Automatically replace delete statements for private class fields

Delete statements are disallowed for private class fields. Previously, I
used regexes to replace these, but we can implement it safely in the
migration script itself.

R=993fcadce4d04090da2fefd557a0995e7966c8d5@chromium.org

Bug: 1222126
Change-Id: Icab2cdaca290d40ea7d50710209cc84ea27208ba
Reviewed-on: https://chromium-review.googlesource.com/c/devtools/devtools-frontend/+/3219231
Commit-Queue: Tim van der Lippe <dba8716ee7f8d16236046f74d2167cb94410f6ed@chromium.org>
Commit-Queue: Jack Franklin <993fcadce4d04090da2fefd557a0995e7966c8d5@chromium.org>
Auto-Submit: Tim van der Lippe <dba8716ee7f8d16236046f74d2167cb94410f6ed@chromium.org>
Reviewed-by: Jack Franklin <993fcadce4d04090da2fefd557a0995e7966c8d5@chromium.org>

ChromeDevTools/devtools-frontend,ChromeDevTools/devtools-frontend,ChromeDevTools/devtools-frontend,ChromeDevTools/devtools-frontend,ChromeDevTools/devtools-frontend,ChromeDevTools/devtools-frontend