| Index: runtime/observatory/lib/elements.dart
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| diff --git a/runtime/observatory/lib/elements.dart b/runtime/observatory/lib/elements.dart
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| index b4485494026103206b77ae4ddd9c8b48ea7c1927..adea98084127cb1a6b7bed997bb4aa59510e3b18 100644
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| --- a/runtime/observatory/lib/elements.dart
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| +++ b/runtime/observatory/lib/elements.dart
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| @@ -62,6 +62,8 @@ import 'dart:async';
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|  
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|  import 'package:observatory/src/elements/curly_block.dart';
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|  import 'package:observatory/src/elements/curly_block_wrapper.dart';
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| +import 'package:observatory/src/elements/nav/isolate_menu.dart';
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| +import 'package:observatory/src/elements/nav/isolate_menu_wrapper.dart';
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|  import 'package:observatory/src/elements/nav/menu.dart';
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|  import 'package:observatory/src/elements/nav/menu_wrapper.dart';
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|  import 'package:observatory/src/elements/nav/menu_item.dart';
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| @@ -75,6 +77,7 @@ import 'package:observatory/src/elements/view_footer.dart';
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|  export 'package:observatory/src/elements/helpers/rendering_queue.dart';
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|  
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|  export 'package:observatory/src/elements/curly_block.dart';
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| +export 'package:observatory/src/elements/nav/isolate_menu.dart';
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|  export 'package:observatory/src/elements/nav/menu.dart';
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|  export 'package:observatory/src/elements/nav/menu_item.dart';
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|  export 'package:observatory/src/elements/nav/refresh.dart';
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| @@ -86,6 +89,8 @@ export 'package:observatory/src/elements/view_footer.dart';
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|  Future initElements() async {
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|    CurlyBlockElement.tag.ensureRegistration();
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|    CurlyBlockElementWrapper.tag.ensureRegistration();
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| +  NavIsolateMenuElement.tag.ensureRegistration();
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| +  NavIsolateMenuElementWrapper.tag.ensureRegistration();
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|    NavMenuElement.tag.ensureRegistration();
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|    NavMenuElementWrapper.tag.ensureRegistration();
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|    NavMenuItemElement.tag.ensureRegistration();
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| 
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