switch Node.bind to interop

pkg/template_binding/lib/src/input_element.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 template_binding;
-
-/** Extensions to the [InputElement] API. */
-class _InputElementExtension extends _ElementExtension {
-  _InputElementExtension(InputElement node) : super(node);
-
-  InputElement get _node => super._node;
-
-  Bindable bind(String name, value, {bool oneTime: false}) {
-    if (name != 'value' && name != 'checked') {
-      return super.bind(name, value, oneTime: oneTime);
-    }
-
-    _node.attributes.remove(name);
-    if (oneTime) {
-      _InputBinding._updateProperty(_node, value, name);
-      return null;
-    }
-
-    // Note: call _updateBindings to always store binding reflection, because
-    // checkboxes may need to update bindings of other checkboxes.
-    return _updateBindings(name, new _InputBinding(_node, value, name));
-  }
-}