b0d35855d8
Closes https://github.com/dart-lang/sdk/issues/41616 When merging interfaces, nullable and non-nullable types should not be treated as the same. This also fixes some nullability information that was not included in dart.idl but is part of the Chromium IDL. Change-Id: I6e94176d905b63364bc93dc2120d194452cf05f2 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/144464 Reviewed-by: Stephen Adams <sra@google.com> Commit-Queue: Srujan Gaddam <srujzs@google.com>