Rename mdv -> template_binding, remove experiemntal apis from dart:html

tools/dom/templates/html/impl/impl_Element.darttemplate

Index: tools/dom/templates/html/impl/impl_Element.darttemplate
diff --git a/tools/dom/templates/html/impl/impl_Element.darttemplate b/tools/dom/templates/html/impl/impl_Element.darttemplate
index 83555ee93ab689eb610bbd146badae190ea9b3cf..bd703e52a596b31cc64ae4f7c6974b7ad04506cd 100644
--- a/tools/dom/templates/html/impl/impl_Element.darttemplate
+++ b/tools/dom/templates/html/impl/impl_Element.darttemplate
@@ -981,19 +981,6 @@ $endif
   }
 
 $if DART2JS
-  @Creates('Null')  // Set from Dart code; does not instantiate a native type.
-$endif
-  Element _templateInstanceRef;
-
-  // Note: only used if `this is! TemplateElement`
-$if DART2JS
-  @Creates('Null')  // Set from Dart code; does not instantiate a native type.
-$endif
-  DocumentFragment _templateContent;
-
-  bool _templateIsDecorated;
-
-$if DART2JS
   @DomName('Element.createShadowRoot')
   @SupportedBrowser(SupportedBrowser.CHROME, '25')
   @Experimental()
@@ -1010,133 +997,6 @@ $if DART2JS
       JS('ShadowRoot|Null', '#.shadowRoot || #.webkitShadowRoot', this, this);
 $endif
 
-
-  /**
-   * Gets the template this node refers to.
-   * This is only supported if [isTemplate] is true.
-   */
-  @Experimental()
-  Element get ref {
-    _ensureTemplate();
-
-    Element result = null;
-    var refId = attributes['ref'];
-    if (refId != null) {
-      var treeScope = this;
-      while (treeScope.parentNode != null) {
-        treeScope = treeScope.parentNode;
-      }
-
-      // Note: JS code tests that getElementById is present. We can't do that
-      // easily, so instead check for the types known to implement it.
-      if (treeScope is Document ||
-          treeScope is ShadowRoot ||
-          treeScope is svg.SvgSvgElement) {
-
-        result = treeScope.getElementById(refId);
-      }
-    }
-
-    if (result == null) {
-      result = _templateInstanceRef;
-      if (result == null) return this;
-    }
-
-    var nextRef = result.ref;
-    return nextRef != null ? nextRef : result;
-  }
-
-  /**
-   * Gets the content of this template.
-   * This is only supported if [isTemplate] is true.
-   */
-  @Experimental()
-  DocumentFragment get content {
-    _ensureTemplate();
-    return _templateContent;
-  }
-
-  /**
-   * Creates an instance of the template, using the provided model and optional
-   * binding delegate.
-   *
-   * This is only supported if [isTemplate] is true.
-   */
-  @Experimental()
-  DocumentFragment createInstance(model, [BindingDelegate delegate]) {
-    _ensureTemplate();
-    return TemplateElement.mdvPackage(this).createInstance(model, delegate);
-  }
-
-  /**
-   * The data model which is inherited through the tree.
-   * This is only supported if [isTemplate] is true.
-   */
-  @Experimental()
-  get model => TemplateElement.mdvPackage(this).model;
-
-  @Experimental()
-  void set model(value) {
-    _ensureTemplate();
-    TemplateElement.mdvPackage(this).model = value;
-  }
-
-  /**
-   * The binding delegate which is inherited through the tree. It can be used
-   * to configure custom syntax for `{{bindings}}` inside this template.
-   *
-   * This is only supported if [isTemplate] is true.
-   */
-  @Experimental()
-  BindingDelegate get bindingDelegate =>
-      TemplateElement.mdvPackage(this).bindingDelegate;
-
-  @Experimental()
-  void set bindingDelegate(BindingDelegate value) {
-    _ensureTemplate();
-    TemplateElement.mdvPackage(this).bindingDelegate = value;
-  }
-
-  // TODO(jmesserly): const set would be better
-  static const _TABLE_TAGS = const {
-    'caption': null,
-    'col': null,
-    'colgroup': null,
-    'tbody': null,
-    'td': null,
-    'tfoot': null,
-    'th': null,
-    'thead': null,
-    'tr': null,
-  };
-
-  bool get _isAttributeTemplate => attributes.containsKey('template') &&
-      (localName == 'option' || localName == 'optgroup' ||
-       _TABLE_TAGS.containsKey(localName));
-
-  /**
-   * Returns true if this node is a template.
-   *
-   * A node is a template if [tagName] is TEMPLATE, or the node has the
-   * 'template' attribute and this tag supports attribute form for backwards
-   * compatibility with existing HTML parsers. The nodes that can use attribute
-   * form are table elments (THEAD, TBODY, TFOOT, TH, TR, TD, CAPTION, COLGROUP
-   * and COL), OPTION, and OPTGROUP.
-   */
-  // TODO(jmesserly): this is not a public MDV API, but it seems like a useful
-  // place to document which tags our polyfill considers to be templates.
-  // Otherwise I'd be repeating it in several other places.
-  // See if we can replace this with a TemplateMixin.
-  @Experimental()
-  bool get isTemplate => tagName == 'TEMPLATE' || _isAttributeTemplate;
-
-  void _ensureTemplate() {
-    if (!isTemplate) {
-      throw new UnsupportedError('$this is not a template.');
-    }
-    TemplateElement.decorate(this);
-  }
-
   /**
    * Access this element's content position.
    *