| Index: components/sync/engine/attachments/in_memory_attachment_store.h
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| diff --git a/components/sync/engine/attachments/in_memory_attachment_store.h b/components/sync/engine/attachments/in_memory_attachment_store.h
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| index 6072096160c778260b98cc1afead3d1176e8dd10..831d647539a2b97698cac8d032fb03845a1b2551 100644
 | 
| --- a/components/sync/engine/attachments/in_memory_attachment_store.h
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| +++ b/components/sync/engine/attachments/in_memory_attachment_store.h
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| @@ -64,7 +64,7 @@ class InMemoryAttachmentStore : public AttachmentStoreBackend,
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|      std::set<AttachmentStore::Component> components;
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|    };
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|  
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| -  typedef std::map<AttachmentId, AttachmentEntry> AttachmentEntryMap;
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| +  using AttachmentEntryMap = std::map<AttachmentId, AttachmentEntry>;
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|    AttachmentEntryMap attachments_;
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|  
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|    DISALLOW_COPY_AND_ASSIGN(InMemoryAttachmentStore);
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| 
 |