Changes container names and adds a couple of more

mash/wm/window_manager.cc

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "mash/wm/window_manager.h"
 
 #include <stdint.h>
 
 #include <utility>
 
@@ skipping 157 matching lines @@
 mus::Window* WindowManager::OnWmCreateTopLevelWindow(
     std::map<std::string, std::vector<uint8_t>>* properties) {
   return NewTopLevelWindow(properties);
 }
 
 void WindowManager::OnAccelerator(uint32_t id, const ui::Event& event) {
   root_controller_->OnAccelerator(id, std::move(event));
 }
 
 void WindowManager::ScreenlockStateChanged(bool locked) {
-  // Hide USER_PRIVATE windows when the screen is locked.
+  // Hide USER_PRIVATE_CONTAINER windows when the screen is locked.
   mus::Window* window = root_controller_->GetWindowForContainer(
       mash::wm::mojom::Container::USER_PRIVATE);
   window->SetVisible(!locked);
 }
 
 }  // namespace wm
 }  // namespace mash