Port messages sent by WebIDBCursorImpl to Mojo.

content/child/indexed_db/webidbfactory_impl.h

Index: content/child/indexed_db/webidbfactory_impl.h
diff --git a/content/child/indexed_db/webidbfactory_impl.h b/content/child/indexed_db/webidbfactory_impl.h
index 0e4f0ee804311798165da26f8773c54f29662f92..c5e21d5c7b52f732debd8a569883239a9812749a 100644
--- a/content/child/indexed_db/webidbfactory_impl.h
+++ b/content/child/indexed_db/webidbfactory_impl.h
@@ -22,12 +22,10 @@ class SyncMessageFilter;
 }
 
 namespace content {
-class ThreadSafeSender;
 
 class WebIDBFactoryImpl : public blink::WebIDBFactory {
  public:
   WebIDBFactoryImpl(scoped_refptr<IPC::SyncMessageFilter> sync_message_filter,
-                    scoped_refptr<ThreadSafeSender> thread_safe_sender,
                     scoped_refptr<base::SingleThreadTaskRunner> io_runner);
   ~WebIDBFactoryImpl() override;
 
@@ -48,7 +46,6 @@ class WebIDBFactoryImpl : public blink::WebIDBFactory {
   class IOThreadHelper;
 
   IOThreadHelper* io_helper_;
-  scoped_refptr<ThreadSafeSender> thread_safe_sender_;
   scoped_refptr<base::SingleThreadTaskRunner> io_runner_;
 };