3d52fcd250
Closes https://github.com/dart-lang/sdk/issues/45676 `FontFaceSet.add` can return null on Firefox, which leads to a crash due to native null assertions. The scripts are modified to treat the `add` return type as nullable. Change-Id: I8fcff8ef716e8620f04c44f5fb8b3a5884b3d1db Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/195167 Reviewed-by: Stephen Adams <sra@google.com> Commit-Queue: Srujan Gaddam <srujzs@google.com>