Roll kernel to latest and add baseline test.

pkg/compiler/lib/src/serialization/modelz.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.
 
 /// Implementation of the element model used for deserialiation.
 ///
 /// These classes are created by [ElementDeserializer] triggered by the
 /// [Deserializer].
 
 library dart2js.serialization.modelz;
@@ skipping 1224 matching lines @@
   accept(ElementVisitor visitor, arg) {
     return visitor.visitConstructorElement(this, arg);
   }
 
   @override
   bool get isConst => _decoder.getBool(Key.IS_CONST);
 
   @override
   bool get isExternal => _decoder.getBool(Key.IS_EXTERNAL);
 
+  @override
+  bool get isDefaultConstructor => false;
+
   ConstantConstructor get constantConstructor {
     if (isConst && _constantConstructor == null) {
       ObjectDecoder data =
           _decoder.getObject(Key.CONSTRUCTOR, isOptional: true);
       if (data == null) {
         assert(isFromEnvironmentConstructor || isExternal);
         return null;
       }
       _constantConstructor = ConstantConstructorDeserializer.deserialize(data);
     }
@@ skipping 58 matching lines @@
 class DefaultConstructorElementZ extends ConstructorElementZ {
   DefaultConstructorElementZ(ObjectDecoder decoder) : super(decoder);
 
   @override
   ElementKind get kind => ElementKind.GENERATIVE_CONSTRUCTOR;
 
   @override
   bool get isSynthesized => true;
 
   @override
+  bool get isDefaultConstructor => true;
+
+  @override
   ConstructorElement get definingConstructor {
     return enclosingClass.superclass.lookupConstructor('');
   }
 }
 
 class FactoryConstructorElementZ extends ConstructorElementZ {
   FactoryConstructorElementZ(ObjectDecoder decoder) : super(decoder);
 
   @override
   ElementKind get kind => ElementKind.FACTORY_CONSTRUCTOR;
@@ skipping 100 matching lines @@
   @override
   DartType computeType(Resolution resolution) => type;
 
   @override
   bool get isConst => false;
 
   @override
   bool get isClassMember => true;
 
   @override
+  bool get isDefaultConstructor => false;
+
+  @override
   ConstantConstructor get constantConstructor => null;
 
   @override
   bool get hasEffectiveTarget => true;
 
   @override
   ConstructorElement get effectiveTarget => this;
 
   @override
   Element get enclosingElement => enclosingClass;
@@ skipping 936 matching lines @@
   }
 
   @override
   Node get node => throw new UnsupportedError('${this}.node');
 
   @override
   bool get hasNode => false;
 
   String toString() => 'MetadataAnnotationZ(${constant.toDartText()})';
 }