Closes https://github.com/dart-lang/sdk/issues/28291

pkg/dev_compiler/lib/src/compiler/code_generator.dart

 // Copyright (c) 2015, 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.
 
 import 'dart:collection' show HashMap, HashSet;
 import 'dart:math' show min, max;
 
 import 'package:analyzer/analyzer.dart' hide ConstantEvaluator;
 import 'package:analyzer/dart/ast/ast.dart';
@@ skipping 1244 matching lines @@
     // the real superclass.
     if (basetypes.any((t) => _deferIfNeeded(t, element))) {
       // Fall back to raw type
       basetypes =
           basetypes.map((t) => fillDynamicTypeArgs(t.element.type)).toList();
       _hasDeferredSupertype.add(element);
     }
 
     // List of "direct" JS superclasses
     var baseclasses =
-        basetypes.map((t) => _emitType(t, nameType: false)).toList();
+        basetypes.map((t) => _emitConstructorAccess(t, nameType: false)).toList();

[vsm, 2017/01/23 20:45:03]

nit: run format.

     assert(baseclasses.isNotEmpty);
     var heritage = (baseclasses.length == 1)
         ? baseclasses.first
         : _callHelper('mixin(#)', [baseclasses]);
 
     _loader.finishTopLevel(element);
 
     return heritage;
   }
 
@@ skipping 4577 matching lines @@
   if (targetIdentifier.staticElement is! PrefixElement) return false;
   var prefix = targetIdentifier.staticElement as PrefixElement;
 
   // The library the prefix is referring to must come from a deferred import.
   var containingLibrary = resolutionMap
       .elementDeclaredByCompilationUnit(target.root as CompilationUnit)
       .library;
   var imports = containingLibrary.getImportsWithPrefix(prefix);
   return imports.length == 1 && imports[0].isDeferred;
 }