switch Node.bind to interop

pkg/polymer_expressions/test/bindings_test.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.
 
 library bindings_test;
 
 import 'dart:async';
 import 'dart:html';
 
 import 'package:observe/observe.dart';
@@ skipping 139 matching lines @@
         map.remove('b');
         map['c'] = 3;
       }).then(_nextMicrotask).then((_) {
         expect(testDiv.text, 'a:1,c:3,');
         map['a'] = 4;
       }).then(_nextMicrotask).then((_) {
         expect(testDiv.text, 'a:4,c:3,');
       });
     });
 
-    // TODO(sigmund): enable this test (issue 19105)
-    // _cursorPositionTest(false);
-    _cursorPositionTest(true);
-
     // Regression tests for issue 18792.
     for (var usePolymer in [true, false]) {
       // We run these tests both with PolymerExpressions and with the default
       // delegate to ensure the results are consistent. The expressions on these
       // tests use syntax common to both delegates.
       var name = usePolymer ? 'polymer-expressions' : 'default';
       group('$name delegate', () {
         // Use <option template repeat="{{y}}" value="{{}}">item {{}}
         _initialSelectTest('{{y}}', '{{}}', usePolymer);
         _updateSelectTest('{{y}}', '{{}}', usePolymer);
+
+        // TODO(jmesserly): this is broken with polymer-expressions, see
+        // http://dartbug.com/19105
+        if (!usePolymer) _cursorPositionTest(usePolymer);
       });
     }
 
     group('polymer-expressions delegate, polymer syntax', () {
         // Use <option template repeat="{{i in y}}" value="{{i}}">item {{i}}
       _initialSelectTest('{{i in y}}', '{{i}}', true);
       _updateSelectTest('{{i in y}}', '{{i}}', true);
     });
   });
 });
@@ skipping 19 matching lines @@
 
       expect(el.value, 'abcde');
       expect(model.x, 'abcde');
 
       el.selectionStart = 3;
       el.selectionEnd = 3;
       expect(el.selectionStart, 3);
       expect(el.selectionEnd, 3);
 
       el.value = 'abc de';
-      // Updating the input value programatically (even to the same value in
+      // Updating the input value programmatically (even to the same value in
       // Chrome) loses the selection position.
       expect(el.selectionStart, 6);
       expect(el.selectionEnd, 6);
 
       el.selectionStart = 4;
       el.selectionEnd = 4;
 
       expect(model.x, 'abcde');
       el.dispatchEvent(new Event('input'));
       expect(model.x, 'abc de');
@@ skipping 87 matching lines @@
   get y => _y;
   set y(value) {
     _y = notifyPropertyChange(#y, _y, value);
   }
 }
 
 class _NullTreeSanitizer implements NodeTreeSanitizer {
   void sanitizeTree(Node node) {}
 }
 final _nullTreeSanitizer = new _NullTreeSanitizer();