Fix for searching constructor references.

pkg/analysis_server/lib/src/services/index/index_contributor.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.
 
 library services.src.index.index_contributor;
 
 import 'dart:collection' show Queue;
 
 import 'package:analysis_server/src/services/correction/namespace.dart';
 import 'package:analysis_server/src/services/index/index.dart';
@@ skipping 202 matching lines @@
       if (_libraryElement != null) {
         return super.visitCompilationUnit(node);
       }
     }
     return null;
   }
 
   @override
   Object visitConstructorDeclaration(ConstructorDeclaration node) {
     ConstructorElement element = node.element;
-    // define
-    {
-      Location location;
-      if (node.name != null) {
-        int start = node.period.offset;
-        int end = node.name.end;
-        location = _createLocationForOffset(start, end - start);
-      } else {
-        int start = node.returnType.end;
-        location = _createLocationForOffset(start, 0);
-      }
-      recordRelationship(element, IndexConstants.NAME_IS_DEFINED_BY, location);
-    }
-    // visit children
     enterScope(element);
     try {
       return super.visitConstructorDeclaration(node);
     } finally {
       _exitScope();
     }
   }
 
   @override
   Object visitConstructorName(ConstructorName node) {
@@ skipping 566 matching lines @@
   }
 
   /**
    * @return `true` if given "node" is part of [PrefixedIdentifier] "prefix.node".
    */
   static bool _isIdentifierInPrefixedIdentifier(SimpleIdentifier node) {
     AstNode parent = node.parent;
     return parent is PrefixedIdentifier && parent.identifier == node;
   }
 }