| Index: components/sync/base/progress_marker_map.h
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| diff --git a/components/sync/base/progress_marker_map.h b/components/sync/base/progress_marker_map.h
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| index 68b93dd8f55f651198edb127c8901678c8639d86..f830a2f1daf71f7c0607767802573b33aac448e1 100644
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| --- a/components/sync/base/progress_marker_map.h
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| +++ b/components/sync/base/progress_marker_map.h
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| @@ -19,7 +19,7 @@ namespace syncer {
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|  
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|  // A container that maps ModelType to serialized
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|  // DataTypeProgressMarkers.
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| -typedef std::map<ModelType, std::string> ProgressMarkerMap;
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| +using ProgressMarkerMap = std::map<ModelType, std::string>;
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|  
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|  std::unique_ptr<base::DictionaryValue> ProgressMarkerMapToValue(
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|      const ProgressMarkerMap& marker_map);
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| 
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