remove bindModel, the same effect can be achieved through createInstance

pkg/mdv/test/template_element_test.dart

Index: pkg/mdv/test/template_element_test.dart
diff --git a/pkg/mdv/test/template_element_test.dart b/pkg/mdv/test/template_element_test.dart
index d4cd50101d983eb7bb4066ce1ba66ab535013705..a424e9eb02e3b1d3101ba628193698370a7273b7 100644
--- a/pkg/mdv/test/template_element_test.dart
+++ b/pkg/mdv/test/template_element_test.dart
@@ -1566,22 +1566,20 @@ templateElementTests() {
     }
   });
 
-  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');
-    }
-  });
 
-  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');
+      model[sym('name')] = 'Fry';
+      performMicrotaskCheckpoint();
+      expect(root.text, 'Hi Fry');
+    }
   });
 
   observeTest('BindShadowDOM Template Ref', () {