Unify parsing of constructor references.

dart/lib/compiler/implementation/scanner/class_element_parser.dart

 // Copyright (c) 2011, 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.
 
 class ClassElementParser extends PartialParser {
   ClassElementParser(Listener listener) : super(listener);
 
   Token parseClassBody(Token token) => fullParseClassBody(token);
 }
 
@@ skipping 112 matching lines @@
     } else if (getOrSet != null) {
       kind = (identical(getOrSet.stringValue, 'get'))
              ? ElementKind.GETTER : ElementKind.SETTER;
     }
     Element memberElement =
         new PartialFunctionElement(name, beginToken, getOrSet, endToken,
                                    kind, method.modifiers, enclosingElement);
     addMember(memberElement);
   }
 
-  void endFactoryMethod(Token factoryKeyword, Token periodBeforeName,
-                        Token endToken) {
-    super.endFactoryMethod(factoryKeyword, periodBeforeName, endToken);
+  void endFactoryMethod(Token beginToken, Token endToken) {
+    super.endFactoryMethod(beginToken, endToken);
     FunctionExpression method = popNode();
     pushNode(null);
     SourceString name = getMethodNameHack(method.name);
     ElementKind kind = ElementKind.FUNCTION;
     Element memberElement =
-        new PartialFunctionElement(name, factoryKeyword, null, endToken,
+        new PartialFunctionElement(name, beginToken, null, endToken,
                                    kind, method.modifiers, enclosingElement);
     addMember(memberElement);
   }
 
   void endFields(int count, Token beginToken, Token endToken) {
     super.endFields(count, beginToken, endToken);
     VariableDefinitions variableDefinitions = popNode();
     Modifiers modifiers = variableDefinitions.modifiers;
     pushNode(null);
     void buildFieldElement(SourceString name, Element fields) {
@@ skipping 17 matching lines @@
   }
 
   void addMember(Element memberElement) {
     for (Link link = metadata; !link.isEmpty(); link = link.tail) {
       memberElement.addMetadata(link.head);
     }
     metadata = const Link<MetadataAnnotation>();
     enclosingElement.addMember(memberElement, listener);
   }
 }