Move Indexed DB from dedicated thread to task scheduler

content/browser/indexed_db/database_impl.h

Index: content/browser/indexed_db/database_impl.h
diff --git a/content/browser/indexed_db/database_impl.h b/content/browser/indexed_db/database_impl.h
index e0bb02978bc66ecd1b4bd16a571e610898a9aefd..27313be7d0d5be82fb98bdf2b6b6bd6a689b5f7a 100644
--- a/content/browser/indexed_db/database_impl.h
+++ b/content/browser/indexed_db/database_impl.h
@@ -121,9 +121,9 @@ class DatabaseImpl : public ::indexed_db::mojom::Database {
   void AckReceivedBlobs(const std::vector<std::string>& uuids) override;
 
  private:
-  class IDBThreadHelper;
+  class IDBSequenceHelper;
 
-  IDBThreadHelper* helper_;
+  IDBSequenceHelper* helper_;
   // This raw pointer is safe because all DatabaseImpl instances are owned by
   // an IndexedDBDispatcherHost.
   IndexedDBDispatcherHost* dispatcher_host_;