Move Indexed DB from dedicated thread to task scheduler

content/browser/indexed_db/indexed_db_dispatcher_host.h

Index: content/browser/indexed_db/indexed_db_dispatcher_host.h
diff --git a/content/browser/indexed_db/indexed_db_dispatcher_host.h b/content/browser/indexed_db/indexed_db_dispatcher_host.h
index b020fe534bb46dfeef602f169ca4efe00c3c972c..c56d8c2bb8736bf092c71c70ffe879a3664b9e9b 100644
--- a/content/browser/indexed_db/indexed_db_dispatcher_host.h
+++ b/content/browser/indexed_db/indexed_db_dispatcher_host.h
@@ -82,7 +82,7 @@ class CONTENT_EXPORT IndexedDBDispatcherHost
                            int exit_code) override;
 
  private:
-  class IDBThreadHelper;
+  class IDBSequenceHelper;
   // Friends to enable OnDestruct() delegation.
   friend class BrowserThread;
   friend class IndexedDBDispatcherHostTest;
@@ -131,7 +131,7 @@ class CONTENT_EXPORT IndexedDBDispatcherHost
   mojo::StrongAssociatedBindingSet<::indexed_db::mojom::Cursor>
       cursor_bindings_;
 
-  IDBThreadHelper* idb_helper_;
+  IDBSequenceHelper* idb_helper_;
 
   base::WeakPtrFactory<IndexedDBDispatcherHost> weak_factory_;