| Index: dart/sdk/lib/_internal/compiler/implementation/use_unused_api.dart
 | 
| diff --git a/dart/sdk/lib/_internal/compiler/implementation/use_unused_api.dart b/dart/sdk/lib/_internal/compiler/implementation/use_unused_api.dart
 | 
| index 4d31f056c90cb7567a2cb3d7ab3541b620ddf92c..ff6b33ce3eec51bc753f8e0fcdbcab9c6b67e2fd 100644
 | 
| --- a/dart/sdk/lib/_internal/compiler/implementation/use_unused_api.dart
 | 
| +++ b/dart/sdk/lib/_internal/compiler/implementation/use_unused_api.dart
 | 
| @@ -249,8 +249,10 @@ useIr(cps_ir_nodes_sexpr.SExpressionStringifier stringifier,
 | 
|  }
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|  
 | 
|  useCompiler(dart2jslib.Compiler compiler) {
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| -  compiler.libraryLoader.reset();
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| -  compiler.libraryLoader.lookupLibrary(null);
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| +  compiler.libraryLoader
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| +      ..reset()
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| +      ..resetAsync(null)
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| +      ..lookupLibrary(null);
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|  }
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|  
 | 
|  useTypes() {
 | 
| 
 |