Consolidate some more ash tray constants.

ash/common/system/user/user_view.cc

 // Copyright 2014 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/common/system/user/user_view.h"
 
 #include <algorithm>
 #include <utility>
 
 #include "ash/common/multi_profile_uma.h"
@@ skipping 55 matching lines @@
 }
 
 // Creates the view shown in the user switcher popup ("AddUserMenuOption").
 views::View* CreateAddUserView(AddUserSessionPolicy policy,
                                views::ButtonListener* listener) {
   auto view = new views::View;
   const int icon_padding = (kMenuButtonSize - kMenuIconSize) / 2;
   auto layout =
       new views::BoxLayout(views::BoxLayout::kHorizontal, 0, 0,
                            kTrayPopupLabelHorizontalPadding + icon_padding);
-  layout->set_minimum_cross_axis_size(
-      GetTrayConstant(TRAY_POPUP_ITEM_MIN_HEIGHT));
+  layout->set_minimum_cross_axis_size(kTrayPopupItemMinHeight);
   view->SetLayoutManager(layout);
   view->set_background(
       views::Background::CreateSolidBackground(kBackgroundColor));
 
   int message_id = 0;
   switch (policy) {
     case AddUserSessionPolicy::ALLOWED: {
       message_id = IDS_ASH_STATUS_TRAY_SIGN_IN_ANOTHER_ACCOUNT;
 
       auto icon = new views::ImageView();
@@ skipping 312 matching lines @@
     return;
   focus_manager_->RemoveFocusChangeListener(this);
   focus_manager_ = nullptr;
   if (user_card_view_->GetFocusManager())
     user_card_view_->GetFocusManager()->ClearFocus();
   add_menu_option_.reset();
 }
 
 }  // namespace tray
 }  // namespace ash