Rewrite ImplicitConstructorBuilder to use only element model.

pkg/analyzer/lib/src/generated/testing/element_factory.dart

 // Copyright (c) 2014, 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.
 
 // This code was auto-generated, is not intended to be edited, and is subject to
 // significant change. Please see the README file for more information.
 
 library engine.testing.element_factory;
 
 import 'dart:collection';
@@ skipping 52 matching lines @@
         type.typeArguments = typeParameterTypes;
       }
     }
     return element;
   }
 
   static ClassElementImpl classElement2(String typeName,
           [List<String> parameterNames]) =>
       classElement(typeName, objectType, parameterNames);
 
+  static ClassElementImpl classTypeAlias2(String typeName,
+          [List<String> parameterNames]) =>
+      classTypeAlias(typeName, objectType, parameterNames);
+
+  static classTypeAlias(String typeName, InterfaceType superclassType,
+      [List<String> parameterNames]) {
+    ClassElementImpl element =
+        classElement(typeName, superclassType, parameterNames);
+    element.typedef = true;
+    return element;
+  }
+
   static CompilationUnitElementImpl compilationUnit(String fileName) {
     Source source = new NonExistingSource(fileName, UriKind.FILE_URI);
     CompilationUnitElementImpl unit = new CompilationUnitElementImpl(fileName);
     unit.source = source;
     return unit;
   }
 
   static ConstructorElementImpl constructorElement(
       ClassElement definingClass, String name, bool isConst,
       [List<DartType> argumentTypes]) {
@@ skipping 112 matching lines @@
     getter.returnType = type;
     field.getter = getter;
     FunctionTypeImpl getterType = new FunctionTypeImpl.con1(getter);
     getter.type = getterType;
     if (!isConst && !isFinal) {
       PropertyAccessorElementImpl setter =
           new PropertyAccessorElementImpl.forVariable(field);
       setter.setter = true;
       setter.synthetic = true;
       setter.variable = field;
-      setter.parameters = <ParameterElement>[
-        requiredParameter2("_$name", type)
-      ];
+      setter.parameters =
+          <ParameterElement>[requiredParameter2("_$name", type)];
       setter.returnType = VoidTypeImpl.instance;
       setter.type = new FunctionTypeImpl.con1(setter);
       field.setter = setter;
     }
     return field;
   }
 
   static FieldFormalParameterElementImpl fieldFormalParameter(
       Identifier name) => new FieldFormalParameterElementImpl(name);
 
@@ skipping 282 matching lines @@
     variable.getter = getter;
     FunctionTypeImpl getterType = new FunctionTypeImpl.con1(getter);
     getter.type = getterType;
     if (!isConst && !isFinal) {
       PropertyAccessorElementImpl setter =
           new PropertyAccessorElementImpl.forVariable(variable);
       setter.setter = true;
       setter.static = true;
       setter.synthetic = true;
       setter.variable = variable;
-      setter.parameters = <ParameterElement>[
-        requiredParameter2("_$name", type)
-      ];
+      setter.parameters =
+          <ParameterElement>[requiredParameter2("_$name", type)];
       setter.returnType = VoidTypeImpl.instance;
       setter.type = new FunctionTypeImpl.con1(setter);
       variable.setter = setter;
     }
     return variable;
   }
 }