Added Dartium changes onto 45.0.2454.104

LayoutTests/dart/custom/lifecycle-exception.dart

+// Copyright (c) 2014, 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.
+
+import 'dart:html';
+
+class Error extends HtmlElement {
+  Error.created() : super.created();
+    
+  void attached() {
+    print('before attached throw');
+    throw 'attached error';
+    print('after attached throw');
+  }
+
+  void detached() {
+    print('before detached throw');
+    throw 'detached error';
+    print('after detached throw');
+  }
+
+  void attributeChanged() {
+    print('wrong number of arguments - this should never be reached');
+  }
+}
+
+class Error2 extends HtmlElement {
+  Error2.created() : super.created() {
+    throw 'Error2 cannot be created';
+  }
+}
+
+main() {
+  // Test Error.
+  try {
+    document.register('x-error', Error);
+    var element = document.createElement('x-error');
+    document.body.append(element);
+    try {
+      element.attached();
+    } catch(e) {
+      print('Caught direct throw');
+    }
+    element.setAttribute('foo', 'bar');
+    element.remove();
+  } catch (e) {
+    print('No error should be propagated here: $e');
+  }
+
+  // Test Error2.
+  try {
+    document.register('x-error2', Error2);
+    var element = document.createElement('x-error2');
+    print(element is Error2);
+    print(element is Element);
+  } catch (e) {
+    print('No error should be propagated here: $e');
+  }
+}