Added Editor stream and sendObjectToEditor RPC into Service Protocol

runtime/observatory/lib/elements.dart

Index: runtime/observatory/lib/elements.dart
diff --git a/runtime/observatory/lib/elements.dart b/runtime/observatory/lib/elements.dart
index 50badc3efc4946c5da2309d186869296e2b46c85..c7c92df2fbbe9da908581878355b9a198151c8af 100644
--- a/runtime/observatory/lib/elements.dart
+++ b/runtime/observatory/lib/elements.dart
@@ -49,6 +49,7 @@ import 'package:observatory/src/elements/local_var_descriptors_ref.dart';
 import 'package:observatory/src/elements/logging.dart';
 import 'package:observatory/src/elements/megamorphiccache_ref.dart';
 import 'package:observatory/src/elements/megamorphiccache_view.dart';
+import 'package:observatory/src/elements/memory_dashboard.dart';
 import 'package:observatory/src/elements/metric/details.dart';
 import 'package:observatory/src/elements/metric/graph.dart';
 import 'package:observatory/src/elements/metrics.dart';
@@ -146,6 +147,7 @@ export 'package:observatory/src/elements/local_var_descriptors_ref.dart';
 export 'package:observatory/src/elements/logging.dart';
 export 'package:observatory/src/elements/megamorphiccache_ref.dart';
 export 'package:observatory/src/elements/megamorphiccache_view.dart';
+export 'package:observatory/src/elements/memory_dashboard.dart';
 export 'package:observatory/src/elements/metric/details.dart';
 export 'package:observatory/src/elements/metric/graph.dart';
 export 'package:observatory/src/elements/metrics.dart';
@@ -247,6 +249,7 @@ Future initElements() async {
   LoggingPageElement.tag.ensureRegistration();
   MegamorphicCacheRefElement.tag.ensureRegistration();
   MegamorphicCacheViewElement.tag.ensureRegistration();
+  MemoryDashboardElement.tag.ensureRegistration();
   MetricDetailsElement.tag.ensureRegistration();
   MetricGraphElement.tag.ensureRegistration();
   MetricsPageElement.tag.ensureRegistration();