chromeos: Fix shelf appearing at login screen under mash

chrome/browser/chromeos/login/supervised/supervised_user_creation_screen.cc

Index: chrome/browser/chromeos/login/supervised/supervised_user_creation_screen.cc
diff --git a/chrome/browser/chromeos/login/supervised/supervised_user_creation_screen.cc b/chrome/browser/chromeos/login/supervised/supervised_user_creation_screen.cc
index c1ce06f902b9fc780a80790800db36b601955de8..36d99c63ceca44d16c7350ad89b8d88b86115164 100644
--- a/chrome/browser/chromeos/login/supervised/supervised_user_creation_screen.cc
+++ b/chrome/browser/chromeos/login/supervised/supervised_user_creation_screen.cc
@@ -6,7 +6,6 @@
 
 #include <utility>
 
-#include "ash/common/shelf/wm_shelf.h"
 #include "ash/common/wallpaper/wallpaper_controller.h"
 #include "ash/common/wm_shell.h"
 #include "base/memory/ptr_util.h"
@@ -372,8 +371,6 @@ void SupervisedUserCreationScreen::OnManagerFullyAuthenticated(
   // For manager user, move wallpaper to locked container so that windows
   // created during the user image picker step are below it.
   ash::WmShell::Get()->wallpaper_controller()->MoveToLockedContainer();
-  ash::WmShelf::ForWindow(ash::WmShell::Get()->GetPrimaryRootWindow())
-      ->SetAlignment(ash::ShelfAlignment::SHELF_ALIGNMENT_BOTTOM_LOCKED);

[James Cook, 2016/12/16 01:28:27]

This isn't needed anymore. It was added because if the parent user had their
shelf aligned to the left and they did the partial login to create a supervised
user then the system tray would move to the lower-left corner of the screen. We
don't create the shelf anymore so the system tray doesn't move.

 
   controller_->SetManagerProfile(manager_profile);
   if (actor_)