chromeos: Remove AshTestBase::SupportsMultipleDisplays

chrome/browser/ui/ash/launcher/launcher_context_menu_unittest.cc

 // Copyright (c) 2013 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 "chrome/browser/ui/ash/launcher/launcher_context_menu.h"
 
 #include <memory>
 
 #include "ash/common/shelf/shelf_item_types.h"
 #include "ash/common/wm_lookup.h"
@@ skipping 270 matching lines @@
   EXPECT_FALSE(
       IsItemPresentInMenu(menu.get(), LauncherContextMenu::MENU_OPEN_NEW));
   EXPECT_FALSE(IsItemPresentInMenu(menu.get(), LauncherContextMenu::MENU_PIN));
   EXPECT_TRUE(IsItemPresentInMenu(menu.get(), LauncherContextMenu::MENU_CLOSE));
   EXPECT_TRUE(menu->IsCommandIdEnabled(LauncherContextMenu::MENU_CLOSE));
 }
 
 // Tests that fullscreen which makes "Autohide shelf" option disappeared on
 // shelf is a per-display setting (crbug.com/496681).
 TEST_F(LauncherContextMenuTest, AutohideShelfOptionOnExternalDisplay) {
-  if (!SupportsMultipleDisplays())
-    return;
-
   UpdateDisplay("940x550,940x550");
   int64_t primary_id = display::Screen::GetScreen()->GetPrimaryDisplay().id();
   int64_t secondary_id = display_manager()->GetSecondaryDisplay().id();
 
   // Create a normal window on primary display.
   views::Widget* widget = new views::Widget;
   views::Widget::InitParams params(views::Widget::InitParams::TYPE_WINDOW);
   params.context = ash::Shell::GetPrimaryRootWindow();
   widget->Init(params);
   widget->Show();
 
   widget->SetFullscreen(true);
   std::unique_ptr<LauncherContextMenu> primary_menu(CreateLauncherContextMenu(
       ash::TYPE_BROWSER_SHORTCUT, GetWmShelf(primary_id)));
   std::unique_ptr<LauncherContextMenu> secondary_menu(CreateLauncherContextMenu(
       ash::TYPE_BROWSER_SHORTCUT, GetWmShelf(secondary_id)));
   EXPECT_FALSE(IsItemPresentInMenu(primary_menu.get(),
                                    LauncherContextMenu::MENU_AUTO_HIDE));
   EXPECT_TRUE(IsItemPresentInMenu(secondary_menu.get(),
                                   LauncherContextMenu::MENU_AUTO_HIDE));
 }