| Index: runtime/lib/core_patch.dart
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| diff --git a/runtime/lib/core_patch.dart b/runtime/lib/core_patch.dart
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| index 29357aec4d8fe7c873d5323cb5646c592c3cf382..f06c98b29efde22412d8961601237525e931603c 100644
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| --- a/runtime/lib/core_patch.dart
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| +++ b/runtime/lib/core_patch.dart
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| @@ -2,13 +2,8 @@
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|  // for details. All rights reserved. Use of this source code is governed by a
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|  // BSD-style license that can be found in the LICENSE file.
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|  
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| -import "dart:async";
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| -import "dart:collection" show LinkedList, LinkedListEntry;
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| -import 'dart:convert' show ASCII, JSON;
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| -import "dart:isolate";
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|  import "dart:math";
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|  import "dart:typed_data";
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| -import 'dart:_internal' as internal;
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|  
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|  // Equivalent of calling FATAL from C++ code.
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|  _fatal(msg) native "DartCore_fatal";
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| 
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