| Index: pkg/compiler/lib/src/util/emptyset.dart
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| diff --git a/pkg/compiler/lib/src/util/emptyset.dart b/pkg/compiler/lib/src/util/emptyset.dart
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| index d70376f470bcb42c1488ef39cdf7ab57ce0b49ef..da9942c4ff3cb022df303b766aab4edca1607822 100644
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| --- a/pkg/compiler/lib/src/util/emptyset.dart
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| +++ b/pkg/compiler/lib/src/util/emptyset.dart
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| @@ -15,7 +15,7 @@ class ImmutableEmptySet<E> extends IterableBase<E> implements Set<E> {
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|  
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|    get _immutableError => throw new UnsupportedError("EmptySet is immutable");
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|  
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| -  bool add (E element) => _immutableError;
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| +  bool add(E element) => _immutableError;
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|    void addAll(Iterable<E> elements) => _immutableError;
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|  
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|    E lookup(E element) => null;
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| 
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