| Index: components/sync/model_impl/model_type_store_backend.h
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| diff --git a/components/sync/model_impl/model_type_store_backend.h b/components/sync/model_impl/model_type_store_backend.h
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| index 4c99ad24bea51e434282809279e14fe4c1eefd83..193c51ad7c94efede100e8faa4475f5fbd7faea3 100644
 | 
| --- a/components/sync/model_impl/model_type_store_backend.h
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| +++ b/components/sync/model_impl/model_type_store_backend.h
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| @@ -28,7 +28,7 @@ namespace syncer {
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|  class ModelTypeStoreBackend
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|      : public base::RefCountedThreadSafe<ModelTypeStoreBackend> {
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|   public:
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| -  typedef std::unordered_map<std::string, ModelTypeStoreBackend*> BackendMap;
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| +  using BackendMap = std::unordered_map<std::string, ModelTypeStoreBackend*>;
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|  
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|    // Helper function to create in memory environment for leveldb.
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|    static std::unique_ptr<leveldb::Env> CreateInMemoryEnv();
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| 
 |