Merge "Enable PiP for top task before calling WCT#reorder," into main

                throw new RuntimeException("Reparenting leaf Tasks is not supported now. " + task);

            }

        } else {

            if (hop.getToTop() && task.isRootTask()) {

                final ActivityRecord pipCandidate = task.findEnterPipOnTaskSwitchCandidate(

                        task.getDisplayArea().getTopRootTask());

                task.enableEnterPipOnTaskSwitch(pipCandidate, task, null /* toFrontActivity */,

                        null /* options */);

            }

            task.getParent().positionChildAt(

                    hop.getToTop() ? POSITION_TOP : POSITION_BOTTOM,

                    task, false /* includingParents */);