Tray elements behave appropriately on the multiple signin screen (more like lock screen)

ash/system/tray_accessibility.cc

 // Copyright (c) 2012 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 "ash/system/tray_accessibility.h"
 
 #include "ash/accessibility_delegate.h"
 #include "ash/metrics/user_metrics_recorder.h"
+#include "ash/session/session_state_delegate.h"
 #include "ash/shell.h"
 #include "ash/system/tray/hover_highlight_view.h"
 #include "ash/system/tray/system_tray.h"
 #include "ash/system/tray/system_tray_delegate.h"
 #include "ash/system/tray/system_tray_notifier.h"
 #include "ash/system/tray/tray_constants.h"
 #include "ash/system/tray/tray_details_view.h"
 #include "ash/system/tray/tray_item_more.h"
 #include "ash/system/tray/tray_popup_label_button.h"
 #include "base/strings/utf_string_conversions.h"
@@ skipping 182 matching lines @@
   virtual_keyboard_view_ =  AddScrollListItem(
       bundle.GetLocalizedString(
           IDS_ASH_STATUS_TRAY_ACCESSIBILITY_VIRTUAL_KEYBOARD),
       virtual_keyboard_enabled_ ? gfx::Font::BOLD : gfx::Font::NORMAL,
       virtual_keyboard_enabled_);
 }
 
 void AccessibilityDetailedView::AppendHelpEntries() {
   // Currently the help page requires a browser window.
   // TODO(yoshiki): show this even on login/lock screen. crbug.com/158286
+  bool userAddingRunning =
+      (ash::Shell::GetInstance()->session_state_delegate()->GetSessionState() ==
+       ash::SessionStateDelegate::SESSION_STATE_LOGIN_SECONDARY);
+
   if (login_ == user::LOGGED_IN_NONE ||
-      login_ == user::LOGGED_IN_LOCKED)
+      login_ == user::LOGGED_IN_LOCKED || userAddingRunning)
     return;
 
   views::View* bottom_row = new View();
   views::BoxLayout* layout = new
       views::BoxLayout(views::BoxLayout::kHorizontal,
                        kTrayMenuBottomRowPadding,
                        kTrayMenuBottomRowPadding,
                        kTrayMenuBottomRowPaddingBetweenItems);
   layout->set_main_axis_alignment(views::BoxLayout::MAIN_AXIS_ALIGNMENT_FILL);
   bottom_row->SetLayoutManager(layout);
@@ skipping 204 matching lines @@
     if (detailed_popup_)
       detailed_popup_->GetWidget()->Close();
     if (detailed_menu_)
       detailed_menu_->GetWidget()->Close();
   }
 
   previous_accessibility_state_ = accessibility_state;
 }
 
 }  // namespace ash