cros: Fix shelf overlaps bottom of maximized window in guest session

ash/common/shelf/shelf_controller.cc

Index: ash/common/shelf/shelf_controller.cc
diff --git a/ash/common/shelf/shelf_controller.cc b/ash/common/shelf/shelf_controller.cc
index 7137d23af26e4421de51501e073cbba13f73743c..fa475934c2faad3351559f20758d98f2c2d8a1fb 100644
--- a/ash/common/shelf/shelf_controller.cc
+++ b/ash/common/shelf/shelf_controller.cc
@@ -93,9 +93,6 @@ void ShelfController::AddObserver(
 
 void ShelfController::SetAlignment(ShelfAlignment alignment,
                                    int64_t display_id) {
-  if (!ash::WmShelf::CanChangeShelfAlignment())
-    return;
-
   WmShelf* shelf = GetShelfForDisplay(display_id);
   // TODO(jamescook): The initialization check should not be necessary, but
   // otherwise this wrongly tries to set the alignment on a secondary display