a8b6f23906
Adds `readableTypeStrings` feature. Configurations where `Type.toString` is expected to show the original type name and original names in function type named parameters will have this feature. Exceptions are dart2js-prod, dart2js-minified, and vm-obfuscated configurations. Change-Id: I5423bc31afd586733c6249519f030f7152ac4fc7 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/349460 Reviewed-by: Sigmund Cherem <sigmund@google.com> Reviewed-by: Bob Nystrom <rnystrom@google.com> Commit-Queue: Kallen Tu <kallentu@google.com> Reviewed-by: Nate Bosch <nbosch@google.com>