Remove old (dead) app list code.

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

 // Copyright 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/chrome_launcher_controller_impl.h"
 
 #include <stddef.h>
 
 #include "ash/aura/wm_window_aura.h"
 #include "ash/common/shelf/app_list_button.h"
@@ skipping 110 matching lines @@
   int icon_updates() { return icon_updates_; }
 
  private:
   Profile* profile_;
   int icon_updates_;
 
   DISALLOW_COPY_AND_ASSIGN(TestAppWindowRegistryObserver);
 };
 
 // Click the "All Apps" button from the app launcher start page. Assumes that
-// the app launcher is open to the start page. On the non-experimental launcher,
-// does nothing.
+// the app launcher is open to the start page.
 // |display_origin| is the top-left corner of the active display, in screen
 // coordinates.
 void ClickAllAppsButtonFromStartPage(ui::test::EventGenerator* generator,
                                      const gfx::Point& display_origin) {
-  if (!app_list::switches::IsExperimentalAppListEnabled())
-    return;
-
   AppListServiceAshTestApi service_test;
 
   app_list::StartPageView* start_page_view = service_test.GetStartPageView();
   DCHECK(start_page_view);
 
   app_list::TileItemView* all_apps_button = start_page_view->all_apps_button();
   gfx::Rect all_apps_rect = all_apps_button->GetBoundsInScreen();
   all_apps_rect.Offset(-display_origin.x(), -display_origin.y());
   generator->MoveMouseTo(all_apps_rect.CenterPoint().x(),
                          all_apps_rect.CenterPoint().y());
@@ skipping 2217 matching lines @@
 
   // Close all windows via the menu item.
   CloseBrowserWindow(browser(), menu1.get(), LauncherContextMenu::MENU_CLOSE);
   EXPECT_EQ(0u, BrowserList::GetInstance()->size());
 
   // Check if "Close" is removed from the context menu.
   std::unique_ptr<LauncherContextMenu> menu2 = CreateBrowserItemContextMenu();
   ASSERT_FALSE(
       IsItemPresentInMenu(menu2.get(), LauncherContextMenu::MENU_CLOSE));
 }