sdk/lib/html/dart2js/html_dart2js.dart

Index: sdk/lib/html/dart2js/html_dart2js.dart
diff --git a/sdk/lib/html/dart2js/html_dart2js.dart b/sdk/lib/html/dart2js/html_dart2js.dart
index 25bc27a488919f9a4013b267fcbd201bfd6465a7..3a1e464a3ce902b7ed2fa402ec09a573789d4a18 100644
--- a/sdk/lib/html/dart2js/html_dart2js.dart
+++ b/sdk/lib/html/dart2js/html_dart2js.dart
@@ -23346,20 +23346,39 @@ class ShadowRoot extends DocumentFragment native "ShadowRoot" {
   static bool get supported =>
       JS('bool', '!!(Element.prototype.webkitCreateShadowRoot)');
 
+  static bool _shadowRootDeprecationReported = false;
+  static void _shadowRootDeprecationReport() {
+    if (!_shadowRootDeprecationReported) {
+      window.console.warn('''
+ShadowRoot.resetStyleInheritance and ShadowRoot.applyAuthorStyles now deprecated in dart:html.
+Please remove them from your code.
+''');
+      _shadowRootDeprecationReported = true;
+    }
+  }
+
   @deprecated
-  bool get resetStyleInheritance => this._resetStyleInheritance;
+  bool get resetStyleInheritance {
+    _shadowRootDeprecationReport();
+    // Default value from when it was specified.
+    return false;
+  }
 
   @deprecated
   void set resetStyleInheritance(bool value) {
-    this._resetStyleInheritance = value;
+    _shadowRootDeprecationReport();
   }
 
   @deprecated
-  bool get applyAuthorStyles => this._applyAuthorStyles;
+  bool get applyAuthorStyles {
+    _shadowRootDeprecationReport();
+    // Default value from when it was specified.
+    return false;
+  }
 
   @deprecated
   void set applyAuthorStyles(bool value) {
-    this._applyAuthorStyles = value;
+    _shadowRootDeprecationReport();
   }
 }
 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file