1ef944b052
This CL adds `CatchParameterBuilder`, which builds `CatchVariable`. `BodyBuilderIimpl` and `InferenceVisitorImpl` are changed accordingly, to produce and handle `CatchParameterBuider` instead of `FormalParameterBuilder` for the parameters of the catch clause. Closes https://github.com/dart-lang/sdk/issues/62743 Part of https://github.com/dart-lang/sdk/issues/61572 Change-Id: I713b55be7d73cdd221736b4facb85b764380761c Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/484581 Reviewed-by: Johnni Winther <johnniwinther@google.com> Commit-Queue: Chloe Stefantsova <cstefantsova@google.com>