Revert 28422

runtime/bin/vmservice/client/packages/observatory/src/observatory_elements/error_view.dart

Index: runtime/bin/vmservice/client/packages/observatory/src/observatory_elements/error_view.dart
diff --git a/runtime/bin/vmservice/client/packages/observatory/src/observatory_elements/error_view.dart b/runtime/bin/vmservice/client/packages/observatory/src/observatory_elements/error_view.dart
deleted file mode 100644
index 6dee32afa3f94855f68a85bd65154b8d9a00b08f..0000000000000000000000000000000000000000
--- a/runtime/bin/vmservice/client/packages/observatory/src/observatory_elements/error_view.dart
+++ /dev/null
@@ -1,14 +0,0 @@
-// 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 error_view_element;
-
-import 'package:polymer/polymer.dart';
-import 'observatory_element.dart';
-
-/// Displays an Error response.
-@CustomTag('error-view')
-class ErrorViewElement extends ObservatoryElement {
-  @published String get error => __$error; String __$error = ''; set error(String value) { __$error = notifyPropertyChange(#error, __$error, value); }
-}