xdg_activation_v1: Improve internal API

Be explicit about how we only request privileged tokens internally in
KWin.

src/plugins/windowsystem/windowsystem.cpp

@@ -324,7 +324,7 @@ void WindowSystem::requestToken(QWindow *win, uint32_t serial, const QString &ap
     Q_UNUSED(win); // it's coming from within kwin, it doesn't matter the window
 
     auto seat = KWin::waylandServer()->seat();
-    auto token = KWin::waylandServer()->xdgActivationIntegration()->requestToken(true, nullptr, seat->display()->serial(), seat, appId);
+    auto token = KWin::waylandServer()->xdgActivationIntegration()->requestPrivilegedToken(nullptr, seat->display()->serial(), seat, appId);
     // Ensure that xdgActivationTokenArrived is always emitted asynchronously
     QTimer::singleShot(0, [serial, token] {
         Q_EMIT KWindowSystem::self()->xdgActivationTokenArrived(serial, token);

src/xdgactivationv1.h

@@ -44,10 +44,14 @@ public:
         QSharedPointer<KWaylandServer::PlasmaWindowActivationInterface> activation;
     };
 
-    QString requestToken(bool isPrivileged, KWaylandServer::SurfaceInterface *surface, uint serial, KWaylandServer::SeatInterface *seat, const QString &appId);
+    QString requestPrivilegedToken(KWaylandServer::SurfaceInterface *surface, uint serial, KWaylandServer::SeatInterface *seat, const QString &appId)
+    {
+        return requestToken(true, surface, serial, seat, appId);
+    }
     void activateSurface(KWaylandServer::SurfaceInterface *surface, const QString &token);
 
 private:
+    QString requestToken(bool isPrivileged, KWaylandServer::SurfaceInterface *surface, uint serial, KWaylandServer::SeatInterface *seat, const QString &appId);
     void clear();
 
     QScopedPointer<ActivationToken> m_currentActivationToken;