Add ElementKind for factory constructors.

pkg/compiler/lib/src/elements/modelx.dart

 // Copyright (c) 2013, 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 elements.modelx;
 
 import '../common.dart';
 import '../common/resolution.dart' show
     Resolution,
     Parsing;
@@ skipping 82 matching lines @@
   }
 
   bool get isClosure => false;
   bool get isClassMember {
     // Check that this element is defined in the scope of a Class.
     return enclosingElement != null && enclosingElement.isClass;
   }
   bool get isInstanceMember => false;
   bool get isDeferredLoaderGetter => false;
 
-  bool get isFactoryConstructor => modifiers.isFactory;
   bool get isConst => modifiers.isConst;
   bool get isFinal => modifiers.isFinal;
   bool get isStatic => modifiers.isStatic;
   bool get isOperator => Elements.isOperatorName(name);
 
   bool get isSynthesized => false;
 
   bool get isMixinApplication => false;
 
   bool get isLocal => false;
 
   // TODO(johnniwinther): This breaks for libraries (for which enclosing
   // elements are null) and is invalid for top level variable declarations for
   // which the enclosing element is a VariableDeclarations and not a compilation
   // unit.
   bool get isTopLevel {
     return enclosingElement != null && enclosingElement.isCompilationUnit;
   }
 
   bool get isAssignable {
     if (isFinal || isConst) return false;
-    if (isFunction || isGenerativeConstructor) return false;
+    if (isFunction || isConstructor) return false;
     return true;
   }
 
   Token get position => null;
 
   SourceSpan get sourcePosition {
     if (position == null) return null;
     Uri uri = compilationUnit.script.resourceUri;
     return new SourceSpan(
         uri, position.charOffset, position.charOffset + position.charCount);
@@ skipping 3047 matching lines @@
   AstElement get definingElement;
 
   bool get hasResolvedAst => definingElement.hasTreeElements;
 
   ResolvedAst get resolvedAst {
     return new ResolvedAst(declaration,
         definingElement.node, definingElement.treeElements);
   }
 
 }