| Index: tests/compiler/dart2js/mock_libraries.dart
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| diff --git a/tests/compiler/dart2js/mock_libraries.dart b/tests/compiler/dart2js/mock_libraries.dart
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| index 95bb3fbe5d2d76fd31cf31c013d20b8ae6e6a80f..37135b2274de5de84fbbecc025b6bc147e4c4251 100644
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| --- a/tests/compiler/dart2js/mock_libraries.dart
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| +++ b/tests/compiler/dart2js/mock_libraries.dart
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| @@ -381,8 +381,10 @@ const Map<String, String> DEFAULT_INTERCEPTORS_LIBRARY = const <String, String>{
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|    'JSUInt31': 'class JSUInt31 extends JSUInt32 {}',
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|    'JSUInt32': 'class JSUInt32 extends JSPositiveInt {}',
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|    'ObjectInterceptor': 'class ObjectInterceptor {}',
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| +  'JavaScriptObject': 'class JavaScriptObject {}',
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|    'PlainJavaScriptObject': 'class PlainJavaScriptObject {}',
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|    'UnknownJavaScriptObject': 'class UnknownJavaScriptObject {}',
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| +  'JavaScriptFunction': 'class JavaScriptFunction {}',
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|  };
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|  
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|  const Map<String, String> DEFAULT_ISOLATE_HELPER_LIBRARY =
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| 
 |