Add crash dumps to service protocol and Observatory

runtime/observatory/lib/src/elements/observatory_application.dart

Index: runtime/observatory/lib/src/elements/observatory_application.dart
diff --git a/runtime/observatory/lib/src/elements/observatory_application.dart b/runtime/observatory/lib/src/elements/observatory_application.dart
index 442f4b0791197bbfe42894f02fbe52b59b511501..4acdc6575bcaa90772680166fc826e0e71db29a4 100644
--- a/runtime/observatory/lib/src/elements/observatory_application.dart
+++ b/runtime/observatory/lib/src/elements/observatory_application.dart
@@ -13,13 +13,13 @@ import 'package:polymer/polymer.dart';
 /// elements.
 @CustomTag('observatory-application')
 class ObservatoryApplicationElement extends ObservatoryElement {
-  @reflectable ObservatoryApplication app;
+  ObservatoryApplication app;
 
   ObservatoryApplicationElement.created() : super.created();
 
   @override
-  void attached() {
-    super.attached();
+  void domReady() {
+    super.domReady();
     app = new ObservatoryApplication(this);
   }
 }