12c4e22a4d
Handles ExtensionType in inference of MapLiteral, inference of ObjectPattern, and exhaustiveness. TEST=tests/extension_type/* Change-Id: I3284da2c69d875e192cf3f004ee1156e1aedd98b Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/333160 Reviewed-by: Ömer Ağacan <omersa@google.com> Reviewed-by: Chloe Stefantsova <cstefantsova@google.com> Commit-Queue: Johnni Winther <johnniwinther@google.com>