[M57] Enable ARC kiosk mode always when ARC is available

chrome/browser/chromeos/app_mode/arc/arc_kiosk_app_manager_browsertest.cc

 // Copyright 2016 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 <memory>
 #include <string>
 #include <utility>
 #include <vector>
 
 #include "base/command_line.h"
@@ skipping 65 matching lines @@
 
 }  // namespace
 
 class ArcKioskAppManagerTest : public InProcessBrowserTest {
  public:
   ArcKioskAppManagerTest() : settings_helper_(false) {}
   ~ArcKioskAppManagerTest() override {}
 
   void SetUpCommandLine(base::CommandLine* command_line) override {
     InProcessBrowserTest::SetUpCommandLine(command_line);
-    command_line->AppendSwitch(chromeos::switches::kEnableArcKiosk);
+    command_line->AppendSwitch(chromeos::switches::kArcAvailable);
   }
 
   void SetUpOnMainThread() override {
     InProcessBrowserTest::SetUpOnMainThread();
 
     settings_helper_.ReplaceProvider(kAccountsPrefDeviceLocalAccounts);
     owner_settings_service_ =
         settings_helper_.CreateOwnerSettingsService(browser()->profile());
   }
 
@@ skipping 112 matching lines @@
     CleanApps();
     waiter.Wait();
     EXPECT_TRUE(waiter.was_notified());
 
     ASSERT_EQ(0u, manager()->GetAllApps().size());
     EXPECT_FALSE(manager()->GetAutoLaunchAccountId().is_valid());
   }
 }
 
 }  // namespace chromeos