sdk/lib/html/dartium/html_dartium.dart

Index: sdk/lib/html/dartium/html_dartium.dart
diff --git a/sdk/lib/html/dartium/html_dartium.dart b/sdk/lib/html/dartium/html_dartium.dart
index 1daeb79db7ec4bb051c88640721d6f1b34cbaa27..801eaa4567f2d2801435ad44702f16d0cc17c7fb 100644
--- a/sdk/lib/html/dartium/html_dartium.dart
+++ b/sdk/lib/html/dartium/html_dartium.dart
@@ -8167,6 +8167,11 @@ class Document extends Node
   ElementList queryAll(String selectors) {
     return new _FrozenElementList._wrap($dom_querySelectorAll(selectors));
   }
+
+  /// Checks if [register] is supported on the current platform.
+  bool get supportsRegister {
+    return true;
+  }
 }
 // Copyright (c) 2011, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
@@ -9046,7 +9051,7 @@ abstract class ElementList<T extends Element> extends ListBase<T> {
   // https://dvcs.w3.org/hg/fullscreen/raw-file/tip/Overview.html
   @Experimental()
   ElementStream<Event> get onFullscreenError;
- 
+
 }
 
 // TODO(jacobr): this is an inefficient implementation but it is hard to see
@@ -10029,6 +10034,8 @@ abstract class Element extends Node implements ParentNode, ChildNode {
     Point p = Element._offsetToHelper(parentOffset, parent);
     return new Point(p.x + current.offsetLeft, p.y + current.offsetTop);
   }
+
+
   // To suppress missing implicit constructor warnings.
   factory Element._() { throw new UnsupportedError("Not supported"); }
 
@@ -32424,6 +32431,14 @@ class Platform {
    * error.
    */
   static final supportsSimd = true;
+
+  /**
+   * Upgrade all custom elements in the subtree which have not been upgraded.
+   *
+   * This is needed to cover timing scenarios which the custom element polyfill
+   * does not cover.
+   */
+  void upgradeCustomElements(Node node) {}
 }
 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a