Send QEvent::Tooltip to QSystemTrayIcon

QSystemTrayIcon's window should send QEvent::ToolTip to QSystemTrayIcon
main class under X11. This patch fixes regression inroduced in Qt 5.0.

Change-Id: I81f6d85e13f492e5e7d13dacc44185a511e5085d
Task-number: QTBUG-46130
Reviewed-by: Błażej Szczygieł <spaz16@wp.pl>
Reviewed-by: Laszlo Agocs <laszlo.agocs@theqtcompany.com>

src/widgets/util/qsystemtrayicon.cpp

@@ -284,12 +284,6 @@ bool QSystemTrayIcon::isVisible() const
 */
 bool QSystemTrayIcon::event(QEvent *e)
 {
-#if defined(Q_DEAD_CODE_FROM_QT4_X11)
-    if (e->type() == QEvent::ToolTip) {
-        Q_D(QSystemTrayIcon);
-        return d->sys->deliverToolTipEvent(e);
-    }
-#endif
     return QObject::event(e);
 }
 

src/widgets/util/qsystemtrayicon_x11.cpp

@@ -194,6 +194,9 @@ void QSystemTrayIconSys::mouseDoubleClickEvent(QMouseEvent *ev)
 bool QSystemTrayIconSys::event(QEvent *e)
 {
     switch (e->type()) {
+    case QEvent::ToolTip:
+        QApplication::sendEvent(q, e);
+        break;
 #ifndef QT_NO_WHEELEVENT
     case QEvent::Wheel:
         return QApplication::sendEvent(q, e);