| Index: sdk/lib/_internal/lib/js_names.dart
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| diff --git a/sdk/lib/_internal/lib/js_names.dart b/sdk/lib/_internal/lib/js_names.dart
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| index 5cd89e262d9686943a8516724d852866f54d79ff..90ad3cf871f9cb5c54cf0beb5b90c28d5e5d0fde 100644
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| --- a/sdk/lib/_internal/lib/js_names.dart
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| +++ b/sdk/lib/_internal/lib/js_names.dart
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| @@ -8,8 +8,7 @@ import 'dart:_foreign_helper' show JS, JS_GET_NAME;
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|  
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|  import 'dart:_js_helper' show JsCache;
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|  
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| -import 'dart:_js_primitives' show
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| -    markFixedList;
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| +import 'dart:_interceptors' show JSArray;
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|  
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|  /// No-op method that is called to inform the compiler that unmangled named
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|  /// must be preserved.
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| @@ -75,7 +74,7 @@ List extractKeys(victim) {
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|    }
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|    return result;
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|  })(#, Object.prototype.hasOwnProperty)''', victim);
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| -  return markFixedList(result);
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| +  return new JSArray.markFixed(result);
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|  }
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|  
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|  /**
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| 
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