938d9c0dc8
This moves the creation of class builders for anonymous mixin application to after the creation of the normal class builders. A ClassDeclaration interface is added to support class builders from different fragments. This is also a step towards creating class builders fully through fragments. TEST=existing Change-Id: Ia6b4a17648bdc89b89fd3cfdfe39d24d347b6341 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/407420 Reviewed-by: Chloe Stefantsova <cstefantsova@google.com> Commit-Queue: Johnni Winther <johnniwinther@google.com> Reviewed-by: Alexander Markov <alexmarkov@google.com>