Revert "Redo "Make dart2js typed_data implementation classes private""

sdk/lib/_internal/compiler/implementation/elements/elements.dart

 // Copyright (c) 2012, 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;
 
 
 import '../tree/tree.dart';
 import '../util/util.dart';
 import '../resolution/resolution.dart';
@@ skipping 548 matching lines @@
                                           Compiler compiler) {
     return element == compiler.filledListConstructor
         && node.isCall
         && !node.arguments.isEmpty
         && !node.arguments.tail.isEmpty
         && node.arguments.tail.tail.isEmpty;
   }
 
   static bool isConstructorOfTypedArraySubclass(Element element,
                                                 Compiler compiler) {
-    if (compiler.typedDataLibrary == null) return false;
-    if (!element.isConstructor()) return false;
-    FunctionElement constructor = element;
-    constructor = constructor.redirectionTarget;
-    ClassElement cls = constructor.getEnclosingClass();
-    return cls.getLibrary() == compiler.typedDataLibrary
-        && cls.isNative()
-        && compiler.world.isSubtype(compiler.typedDataClass, cls)
-        && compiler.world.isSubtype(compiler.listClass, cls)
-        && constructor.name == '';
+    if (compiler.typedDataClass == null) return false;
+    ClassElement cls = element.getEnclosingClass();
+    if (cls == null || !element.isConstructor()) return false;
+    return compiler.world.isSubclass(compiler.typedDataClass, cls)
+        && cls.getLibrary() == compiler.typedDataLibrary
+        && element.name == '';
   }
 
   static bool switchStatementHasContinue(SwitchStatement node,
                                          TreeElements elements) {
     for (SwitchCase switchCase in node.cases) {
       for (Node labelOrCase in switchCase.labelsAndCases) {
         Node label = labelOrCase.asLabel();
         if (label != null) {
           LabelElement labelElement = elements[label];
           if (labelElement != null && labelElement.isContinueTarget) {
@@ skipping 418 matching lines @@
   Token get endToken;
 
   // TODO(kasperl): Try to get rid of these.
   void set annotatedElement(Element value);
   void set resolutionState(int value);
 
   MetadataAnnotation ensureResolved(Compiler compiler);
 }
 
 abstract class VoidElement extends Element {}