ProjectExplorer: Remove RunControl::bringApplicationToForeground

... and replace it by direct uses of ProcessHandle::activate().

Change-Id: I7beffba7bfbeff72a81b8699ff54a311a74ce1a3
Reviewed-by: Christian Stenger <christian.stenger@qt.io>

src/plugins/debugger/qml/qmlengine.cpp

@@ -377,7 +377,7 @@ void QmlEngine::handleLauncherStarted()
 {
     // FIXME: The QmlEngine never calls notifyInferiorPid() triggering the
     // raising, so do it here manually for now.
-    runControl()->bringApplicationToForeground();
+    runControl()->applicationProcessHandle().activate();
     d->noDebugOutputTimer.start();
 }