Pay some naming debt.

pkg/front_end/lib/src/fasta/kernel/kernel_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.kernel_builder;
 
 export 'kernel_class_builder.dart' show
     KernelClassBuilder;
 
 export 'kernel_enum_builder.dart' show
     KernelEnumBuilder;
 
 export 'kernel_field_builder.dart' show
     KernelFieldBuilder;
 
 export 'kernel_formal_parameter_builder.dart' show
     KernelFormalParameterBuilder;
 
 export 'kernel_function_type_alias_builder.dart' show
     KernelFunctionTypeAliasBuilder;
 
-export 'kernel_interface_type_builder.dart' show
-    KernelInterfaceTypeBuilder;
+export 'kernel_named_type_builder.dart' show
+    KernelNamedTypeBuilder;
 
 export 'kernel_library_builder.dart' show
     KernelLibraryBuilder;
 
 export 'kernel_mixin_application_builder.dart' show
     KernelMixinApplicationBuilder;
 
 export 'kernel_named_mixin_application_builder.dart' show
     KernelNamedMixinApplicationBuilder;
 
@@ skipping 69 matching lines @@
   charOffset ??= -1;
   if (charOffset == -1) {
     charOffset = member.fileOffset ?? -1;
   }
   if (charOffset == -1) {
     charOffset = cls?.fileOffset ?? -1;
   }
   name = (cls == null ? "" : "${cls.name}::") + name;
   return inputError(uri, charOffset, "Error in $name: $error");
 }