| Index: pkg/compiler/lib/src/js_emitter/full_emitter/emitter.dart
 | 
| diff --git a/pkg/compiler/lib/src/js_emitter/full_emitter/emitter.dart b/pkg/compiler/lib/src/js_emitter/full_emitter/emitter.dart
 | 
| index 6301e77d964edfdc6892b7164203d504f29968fb..d903f99942dbe52db2635abc188e13bfca35c335 100644
 | 
| --- a/pkg/compiler/lib/src/js_emitter/full_emitter/emitter.dart
 | 
| +++ b/pkg/compiler/lib/src/js_emitter/full_emitter/emitter.dart
 | 
| @@ -2112,7 +2112,7 @@ function(originalDescriptor, name, holder, isStatic, globalFunctionsAccess) {
 | 
|  
 | 
|    jsAst.Comment buildGeneratedBy() {
 | 
|      List<String> options = [];
 | 
| -    if (compiler.mirrorsLibrary != null) options.add('mirrors');
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| +    if (compiler.commonElements.mirrorsLibrary != null) options.add('mirrors');
 | 
|      if (compiler.options.useContentSecurityPolicy) options.add("CSP");
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|      return new jsAst.Comment(generatedBy(compiler, flavor: options.join(", ")));
 | 
|    }
 | 
| 
 |