Remove InProcessBrowserTest::SetUpOnMainThread() calls.

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 69 matching lines @@
  public:
   ArcKioskAppManagerTest() : settings_helper_(false) {}
   ~ArcKioskAppManagerTest() override {}
 
   void SetUpCommandLine(base::CommandLine* command_line) override {
     InProcessBrowserTest::SetUpCommandLine(command_line);
     arc::SetArcAvailableCommandLineForTesting(command_line);
   }
 
   void SetUpOnMainThread() override {
-    InProcessBrowserTest::SetUpOnMainThread();
-
     settings_helper_.ReplaceProvider(kAccountsPrefDeviceLocalAccounts);
     owner_settings_service_ =
         settings_helper_.CreateOwnerSettingsService(browser()->profile());
   }
 
   void TearDownOnMainThread() override { settings_helper_.RestoreProvider(); }
 
   void SetApps(const std::vector<policy::ArcKioskAppBasicInfo>& apps,
                const std::string& auto_login_account) {
     base::ListValue device_local_accounts;
@@ skipping 122 matching lines @@
     EXPECT_TRUE(waiter.was_notified());
 
     ArcKioskAppManager::Apps apps;
     manager()->GetAllApps(&apps);
     ASSERT_EQ(0u, apps.size());
     EXPECT_FALSE(manager()->GetAutoLaunchAccountId().is_valid());
   }
 }
 
 }  // namespace chromeos