Move scope.dart.

pkg/front_end/lib/src/fasta/builder/mixin_application_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.mixin_application_builder;
 
 import '../errors.dart' show internalError;
 
 import 'builder.dart'
-    show TypeBuilder, TypeDeclarationBuilder, TypeVariableBuilder;
-
-import 'scope.dart' show Scope;
+    show Scope, TypeBuilder, TypeDeclarationBuilder, TypeVariableBuilder;
 
 abstract class MixinApplicationBuilder<T extends TypeBuilder>
     extends TypeBuilder {
   final T supertype;
   final List<T> mixins;
 
   MixinApplicationBuilder(
       this.supertype, this.mixins, int charOffset, Uri fileUri)
       : super(charOffset, fileUri);
 
@@ skipping 27 matching lines @@
     buffer.write(" with ");
     bool first = true;
     for (T t in mixins) {
       if (!first) buffer.write(", ");
       first = false;
       t.printOn(buffer);
     }
     return buffer;
   }
 }