| Index: components/sync_sessions/tab_node_pool.h
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| diff --git a/components/sync_sessions/tab_node_pool.h b/components/sync_sessions/tab_node_pool.h
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| index caadc4e5f2ee97964b3646e73828dacb62286e28..82175d5efd976d7f2557d831ea5abcd28ec34014 100644
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| --- a/components/sync_sessions/tab_node_pool.h
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| +++ b/components/sync_sessions/tab_node_pool.h
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| @@ -125,7 +125,7 @@ class TabNodePool {
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|  
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|   private:
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|    friend class SyncTabNodePoolTest;
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| -  typedef std::map<int, SessionID::id_type> TabNodeIDToTabIDMap;
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| +  using TabNodeIDToTabIDMap = std::map<int, SessionID::id_type>;
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|  
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|    // Adds |tab_node_id| to free node pool.
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|    // |change_output| *must* be provided. It is the TabNodePool's link to
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| 
 |