Revert "Library functions can never be constructors."

sdk/lib/_internal/compiler/implementation/js_emitter/reflection_data_parser.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.
 
 part of dart2js.js_emitter;
 
 // TODO(ahe): Share these with js_helper.dart.
 const FUNCTION_INDEX = 0;
 const NAME_INDEX = 1;
 const CALL_NAME_INDEX = 2;
 const REQUIRED_PARAMETER_INDEX = 3;
 const OPTIONAL_PARAMETER_INDEX = 4;
 const DEFAULT_ARGUMENTS_INDEX = 5;
 
 const bool VALIDATE_DATA = false;
 
 // TODO(ahe): This code should be integrated in CodeEmitterTask.finishClasses.
 jsAst.Expression getReflectionDataParser(String classesCollector,
                                         JavaScriptBackend backend) {
   Namer namer = backend.namer;
   Compiler compiler = backend.compiler;
 
   String metadataField = '"${namer.metadataField}"';
   String reflectableField = namer.reflectableField;
 
   // TODO(ahe): Move this string constants to namer.
   String reflectionInfoField = r'$reflectionInfo';
   String reflectionNameField = r'$reflectionName';
   String metadataIndexField = r'$metadataIndex';
-  String redirectionTargetNameIndex = r'$redirectionTargetIndex';
 
   String defaultValuesField = namer.defaultValuesField;
   String methodsWithOptionalArgumentsField =
       namer.methodsWithOptionalArgumentsField;
 
   String unmangledNameIndex = backend.mustRetainMetadata
       ? ' 3 * optionalParameterCount + 2 * requiredParameterCount + 3'
       : ' 2 * optionalParameterCount + requiredParameterCount + 3';
 
 
@@ skipping 134 matching lines @@
       f.\$callName = null;
       if (isIntercepted) init.interceptedNames[getterStubName] = true;
     }
     if (isReflectable) {
       for (var i = 0; i < funcs.length; i++) {
         funcs[i].$reflectableField = 1;
         funcs[i].$reflectionInfoField = array;
       }
       var mangledNames = isStatic ? init.mangledGlobalNames : init.mangledNames;
       var unmangledName = ${readString("array", "unmangledNameIndex")};
-      var metadataIndex = unmangledNameIndex + 1;
-
-      if (unmangledName.substring(0, 6) == "new-> ") {
-        // Redirecting constructor.
-        funcs[0].$redirectionTargetNameIndex = metadataIndex;
-        metadataIndex++;
-        unmangledName = "new " + unmangledName.substring(6);
-      }
       // The function is either a getter, a setter, or a method.
       // If it is a method, it might also have a tear-off closure.
       // The unmangledName is the same as the getter-name.
       var reflectionName = unmangledName;
       if (getterStubName) mangledNames[getterStubName] = reflectionName;
       if (isSetter) {
         reflectionName += "=";
       } else if (!isGetter) {
         reflectionName += ":" + requiredParameterCount +
           ":" + optionalParameterCount;
       }
       mangledNames[name] = reflectionName;
       funcs[0].$reflectionNameField = reflectionName;
-      funcs[0].$metadataIndexField = metadataIndex;
+      funcs[0].$metadataIndexField = unmangledNameIndex + 1;
       if (optionalParameterCount) descriptor[unmangledName + "*"] = funcs[0];
     }
   }
 ''';
 
   List<jsAst.Statement> tearOffCode = buildTearOffCode(backend);
 
   String init = '''
   var functionCounter = 0;
   var tearOffGetter = (typeof dart_precompiled == "function")
@@ skipping 166 matching lines @@
 (function() {
   var result = $array[$index];
   if ($check) {
     throw new Error(
         name + ": expected value of type \'$type\' at index " + ($index) +
         " but got " + (typeof result));
   }
   return result;
 })()''';
 }