switch Node.bind to interop

pkg/template_binding/lib/src/text.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 [Text] API. */
-class _TextExtension extends NodeBindExtension {
-  _TextExtension(Text node) : super._(node);
-
-  Bindable bind(String name, value, {bool oneTime: false}) {
-    // Dart note: 'text' instead of 'textContent' to match the DOM property.
-    if (name != 'text') {
-      return super.bind(name, value, oneTime: oneTime);
-    }
-    if (oneTime) {
-      _updateText(value);
-      return null;
-    }
-
-    _open(value, _updateText);
-    return _maybeUpdateBindings(name, value);
-  }
-
-  _updateText(value) {
-    _node.text = _sanitizeValue(value);
-  }
-}
-
-/** Called to sanitize the value before it is assigned into the property. */
-_sanitizeValue(value) => value == null ? '' : '$value';