| Index: pkg/compiler/lib/src/commandline_options.dart
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| diff --git a/pkg/compiler/lib/src/commandline_options.dart b/pkg/compiler/lib/src/commandline_options.dart
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| index 4cd99edf084e9189bf4c564ebe3107e7f2556eeb..204bb2a8762b0097782837197d1d47e44a20c450 100644
 | 
| --- a/pkg/compiler/lib/src/commandline_options.dart
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| +++ b/pkg/compiler/lib/src/commandline_options.dart
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| @@ -17,6 +17,7 @@ class Flags {
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|        '--disable-native-live-type-analysis';
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|    static const String disableTypeInference = '--disable-type-inference';
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|    static const String dumpInfo = '--dump-info';
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| +  static const String enableAssertMessage = '--assert-message';
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|    static const String enableCheckedMode = '--enable-checked-mode';
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|    static const String enableConcreteTypeInference =
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|        '--enable-concrete-type-inference';
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| 
 |