remove bindModel, the same effect can be achieved through createInstance

pkg/mdv/test/template_element_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 template_element_test;
 
 import 'dart:async';
 import 'dart:collection';
 import 'dart:html';
 import 'dart:math' as math;
@@ skipping 1548 matching lines @@
     if (ShadowRoot.supported) {
       var root = createShadowTestHtml(
           '<template bind="{{}}">Hi {{ name }}</template>');
       var model = toSymbolMap({'name': 'Leela'});
       recursivelySetTemplateModel(root, model);
       deliverChanges(model);
       expect(root.nodes[1].text, 'Hi Leela');
     }
   });
 
-  observeTest('BindShadowDOM bindModel', () {
+  observeTest('BindShadowDOM createInstance', () {
     if (ShadowRoot.supported) {
-      var root = createShadowTestHtml('Hi {{ name }}');
       var model = toSymbolMap({'name': 'Leela'});
-      mdv.bindModel(root, model);
+      var template = new Element.html('<template>Hi {{ name }}</template>');
+      var root = createShadowTestHtml('');
+      root.nodes.add(template.createInstance(model));
+
       performMicrotaskCheckpoint();
       expect(root.text, 'Hi Leela');
+
+      model[sym('name')] = 'Fry';
+      performMicrotaskCheckpoint();
+      expect(root.text, 'Hi Fry');
     }
   });
 
-  observeTest('bindModel to polyfilled shadow root', () {
-    var root = createTestHtml('Hi {{ name }}');
-    var model = toSymbolMap({'name': 'Leela'});
-    mdv.bindModel(root, model);
-    performMicrotaskCheckpoint();
-    expect(root.text, 'Hi Leela');
-  });
-
   observeTest('BindShadowDOM Template Ref', () {
     if (ShadowRoot.supported) {
       var root = createShadowTestHtml(
           '<template id=foo>Hi</template><template bind ref=foo></template>');
       recursivelySetTemplateModel(root, toSymbolMap({}));
       performMicrotaskCheckpoint();
       expect(root.nodes.length, 3);
     }
   });
 
@@ skipping 175 matching lines @@
       k = k is String ? sym(k) : _deepToSymbol(k);
       result[k] = _deepToSymbol(v);
     });
     return result;
   }
   if (value is Iterable) {
     return value.map(_deepToSymbol).toList();
   }
   return value;
 }