Remove pointless InProcessBrowserTest calls.

chrome/browser/extensions/extension_startup_browsertest.cc

 // Copyright (c) 2012 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 <stddef.h>
 #include <stdint.h>
 
 #include <vector>
 
 #include "base/base_switches.h"
@@ skipping 91 matching lines @@
 
       base::CopyFile(src_dir.Append(chrome::kPreferencesFilename),
                      preferences_file_);
       base::CopyDirectory(src_dir.AppendASCII("Extensions"), profile_dir,
                           true);  // recursive
     }
     return true;
   }
 
   void SetUpInProcessBrowserTestFixture() override {
-    InProcessBrowserTest::SetUpInProcessBrowserTestFixture();
-
     // Bots are on a domain, turn off the domain check for settings hardening in
     // order to be able to test all SettingsEnforcement groups.
     chrome_prefs::DisableDomainCheckForTesting();
   }
 
   void TearDown() override {
     EXPECT_TRUE(base::DeleteFile(preferences_file_, false));
 
     // TODO(phajdan.jr): Check return values of the functions below, carefully.
     base::DeleteFile(user_scripts_dir_, true);
@@ skipping 288 matching lines @@
     } else if (extension->name() == "App Test") {
       is_app_test_extension_enabled = true;
     } else {
       EXPECT_TRUE(
           extensions::Manifest::IsComponentLocation(extension->location()));
     }
   }
   EXPECT_TRUE(is_app_dot_com_extension_enabled);
   EXPECT_TRUE(is_app_test_extension_enabled);
 }