Move Indexed DB from dedicated thread to task scheduler

content/browser/indexed_db/indexed_db_dispatcher_host.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CONTENT_BROWSER_INDEXED_DB_INDEXED_DB_DISPATCHER_HOST_H_
 #define CONTENT_BROWSER_INDEXED_DB_INDEXED_DB_DISPATCHER_HOST_H_
 
 #include <stdint.h>
 
 #include <map>
@@ skipping 64 matching lines @@
     return weak_factory_.GetWeakPtr();
   }
 
   // Called by UI thread. Used to kill outstanding bindings and weak pointers
   // in callbacks.
   void RenderProcessExited(RenderProcessHost* host,
                            base::TerminationStatus status,
                            int exit_code) override;
 
  private:
-  class IDBThreadHelper;
+  class IDBSequenceHelper;
   // Friends to enable OnDestruct() delegation.
   friend class BrowserThread;
   friend class IndexedDBDispatcherHostTest;
   friend class base::DeleteHelper<IndexedDBDispatcherHost>;
 
   ~IndexedDBDispatcherHost() override;
 
   // indexed_db::mojom::Factory implementation:
   void GetDatabaseNames(
       ::indexed_db::mojom::CallbacksAssociatedPtrInfo callbacks_info,
@@ skipping 28 matching lines @@
   const int ipc_process_id_;
 
   mojo::AssociatedBindingSet<::indexed_db::mojom::Factory> bindings_;
 
   mojo::StrongAssociatedBindingSet<::indexed_db::mojom::Database>
       database_bindings_;
 
   mojo::StrongAssociatedBindingSet<::indexed_db::mojom::Cursor>
       cursor_bindings_;
 
-  IDBThreadHelper* idb_helper_;
+  IDBSequenceHelper* idb_helper_;
 
   base::WeakPtrFactory<IndexedDBDispatcherHost> weak_factory_;
 
   DISALLOW_IMPLICIT_CONSTRUCTORS(IndexedDBDispatcherHost);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_INDEXED_DB_INDEXED_DB_DISPATCHER_HOST_H_