Indexed DB: Hold BlobChangeRecords in maps using smart pointers

content/browser/indexed_db/indexed_db_backing_store.h

Index: content/browser/indexed_db/indexed_db_backing_store.h
diff --git a/content/browser/indexed_db/indexed_db_backing_store.h b/content/browser/indexed_db/indexed_db_backing_store.h
index 58f699c2236c0e347d65b67ba07c68acc80bf93a..2b91cdb7d81e9bc4be7a6a935ac58cff42d11579 100644
--- a/content/browser/indexed_db/indexed_db_backing_store.h
+++ b/content/browser/indexed_db/indexed_db_backing_store.h
@@ -259,8 +259,9 @@ class CONTENT_EXPORT IndexedDBBackingStore
 
     IndexedDBBackingStore* backing_store_;
     scoped_refptr<LevelDBTransaction> transaction_;
-    std::map<std::string, BlobChangeRecord*> blob_change_map_;
-    std::map<std::string, BlobChangeRecord*> incognito_blob_map_;
+    std::map<std::string, std::unique_ptr<BlobChangeRecord>> blob_change_map_;
+    std::map<std::string, std::unique_ptr<BlobChangeRecord>>
+        incognito_blob_map_;
     int64_t database_id_;
 
     // List of blob files being newly written as part of this transaction.
@@ -652,7 +653,7 @@ class CONTENT_EXPORT IndexedDBBackingStore
   net::URLRequestContext* request_context_;
   scoped_refptr<base::SequencedTaskRunner> task_runner_;
   std::set<int> child_process_ids_granted_;
-  std::map<std::string, BlobChangeRecord*> incognito_blob_map_;
+  std::map<std::string, std::unique_ptr<BlobChangeRecord>> incognito_blob_map_;
   base::OneShotTimer journal_cleaning_timer_;
 
   std::unique_ptr<LevelDBDatabase> db_;