Pay some naming debt.

pkg/front_end/lib/src/fasta/builder/builder.dart

 // Copyright (c) 2016, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 library fasta.builder;
 
 import '../errors.dart' show
     internalError;
 
 export 'class_builder.dart' show
@@ skipping 28 matching lines @@
 
 export 'mixin_application_builder.dart' show
     MixinApplicationBuilder;
 
 export 'enum_builder.dart' show
     EnumBuilder;
 
 export 'type_declaration_builder.dart' show
     TypeDeclarationBuilder;
 
-export 'interface_type_builder.dart' show
-    InterfaceTypeBuilder;
+export 'named_type_builder.dart' show
+    NamedTypeBuilder;
 
 export 'constructor_reference_builder.dart' show
     ConstructorReferenceBuilder;
 
 export '../source/unhandled_listener.dart' show
     Unhandled;
 
 export 'member_builder.dart' show
     MemberBuilder;
 
@@ skipping 108 matching lines @@
 
   static Uri getUri(Builder builder) {
     if (builder == null) return internalError("Builder is null.");
     while (builder != null) {
       if (builder is LibraryBuilder) return builder.uri;
       builder = builder.parent;
     }
     return internalError("No library parent.");
   }
 }