im: add send button

Refs #74825

Change-Id: I955ff044e8e1f05e2b0a4050f133641138281620
diff --git a/instantmessagingwidget.h b/instantmessagingwidget.h
index f659f13..ed95a73 100644
--- a/instantmessagingwidget.h
+++ b/instantmessagingwidget.h
@@ -41,6 +41,10 @@
 protected:
     virtual void keyPressEvent(QKeyEvent *event);
 
+//UI SLOTS
+private slots:
+    void on_sendButton_clicked();
+
 private slots:
     void mediaAdd(Media::Media *media);