Version 1.2.0-dev.5.7

tools/dom/src/native_DOMImplementation.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.
 
 part of html;
 
 class _ConsoleVariables {
   Map<String, Object> _data = new Map<String, Object>();
 
   /**
@@ skipping 388 matching lines @@
     LibraryMirror lib = cls.owner;
     String libName = lib.uri.toString();
     return libName.startsWith('dart:');
   }
 
   static void register(Document document, String tag, Type type,
       String extendsTagName) {
     // TODO(vsm): Move these checks into native code.
     ClassMirror cls = reflectClass(type);
     if (_isBuiltinType(cls)) {
-      throw new UnsupportedError("Invalid custom element from ${cls.owner.uri}.");
+      throw new UnsupportedError("Invalid custom element from ${(cls.owner as LibraryMirror).uri}.");
     }
     var className = MirrorSystem.getName(cls.simpleName);
     var createdConstructor = cls.declarations[new Symbol('$className.created')];
     if (createdConstructor == null ||
         createdConstructor is! MethodMirror ||
         !createdConstructor.isConstructor) {
       throw new UnsupportedError(
           'Class is missing constructor $className.created');
     }
 
@@ skipping 195 matching lines @@
   _scheduleImmediateHelper._schedule(callback);
 };
 
 get _pureIsolateScheduleImmediateClosure => ((void callback()) =>
   throw new UnimplementedError("scheduleMicrotask in background isolates "
                                "are not supported in the browser"));
 
 void _initializeCustomElement(Element e) {
   _Utils.initializeCustomElement(e);
 }