Clean up many generated constructors

pkg/analyzer/test/generated/incremental_resolver_test.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 engine.incremental_resolver_test;
 
 import 'package:analyzer/src/generated/ast.dart';
 import 'package:analyzer/src/generated/element.dart';
 import 'package:analyzer/src/generated/engine.dart';
 import 'package:analyzer/src/generated/error.dart';
@@ skipping 2782 matching lines @@
 
   void _runTasks() {
     AnalysisResult result = analysisContext.performAnalysisTask();
     while (result.changeNotices != null) {
       result = analysisContext.performAnalysisTask();
     }
   }
 
   static AstNode _findNodeAt(
       CompilationUnit oldUnit, int offset, Predicate<AstNode> predicate) {
-    NodeLocator locator = new NodeLocator.con1(offset);
+    NodeLocator locator = new NodeLocator(offset);
     AstNode node = locator.searchWithin(oldUnit);
     return node.getAncestor(predicate);
   }
 
   static bool _isBlock(AstNode node) => node is Block;
 
   static bool _isClassMember(AstNode node) => node is ClassMember;
 
   static bool _isDeclaration(AstNode node) => node is Declaration;
 
@@ skipping 1285 matching lines @@
     return ResolutionContextBuilder.contextFor(node, listener).scope;
   }
 }
 
 class _Edit {
   final int offset;
   final int length;
   final String replacement;
   _Edit(this.offset, this.length, this.replacement);
 }