Converted Observatory timeline-page element

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 7dc9a74bb3801e93cdd8ce62b7349edb9d2ff53c..5531b667a9a5b0a0497c942499aba0b759e130d9 100644
--- a/runtime/observatory/lib/elements.dart
+++ b/runtime/observatory/lib/elements.dart
@@ -10,7 +10,6 @@ export 'package:observatory/src/elements/library_ref_as_value.dart';
 export 'package:observatory/src/elements/metrics.dart';
 export 'package:observatory/src/elements/observatory_element.dart';
 export 'package:observatory/src/elements/service_ref.dart';
-export 'package:observatory/src/elements/timeline_page.dart';
 export 'package:observatory/src/elements/vm_connect.dart';
 
 import 'dart:async';
@@ -117,6 +116,7 @@ import 'package:observatory/src/elements/source_link.dart';
 import 'package:observatory/src/elements/source_link_wrapper.dart';
 import 'package:observatory/src/elements/stack_trace_tree_config.dart';
 import 'package:observatory/src/elements/strongly_reachable_instances.dart';
+import 'package:observatory/src/elements/timeline_page.dart';
 import 'package:observatory/src/elements/type_arguments_ref.dart';
 import 'package:observatory/src/elements/token_stream_ref.dart';
 import 'package:observatory/src/elements/unknown_ref.dart';
@@ -204,6 +204,7 @@ export 'package:observatory/src/elements/source_inset.dart';
 export 'package:observatory/src/elements/source_link.dart';
 export 'package:observatory/src/elements/stack_trace_tree_config.dart';
 export 'package:observatory/src/elements/strongly_reachable_instances.dart';
+export 'package:observatory/src/elements/timeline_page.dart';
 export 'package:observatory/src/elements/type_arguments_ref.dart';
 export 'package:observatory/src/elements/token_stream_ref.dart';
 export 'package:observatory/src/elements/unknown_ref.dart';
@@ -315,6 +316,7 @@ Future initElements() async {
   SourceLinkElementWrapper.tag.ensureRegistration();
   StackTraceTreeConfigElement.tag.ensureRegistration();
   StronglyReachableInstancesElement.tag.ensureRegistration();
+  TimelinePageElement.tag.ensureRegistration();
   TypeArgumentsRefElement.tag.ensureRegistration();
   TokenStreamRefElement.tag.ensureRegistration();
   UnknownObjectRefElement.tag.ensureRegistration();