Support Using ScopedFeatureList in BrowserTest

chrome/test/base/in_process_browser_test.h

 // 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.
 
 #ifndef CHROME_TEST_BASE_IN_PROCESS_BROWSER_TEST_H_
 #define CHROME_TEST_BASE_IN_PROCESS_BROWSER_TEST_H_
 
 #include <memory>
 
 #include "base/compiler_specific.h"
 #include "base/files/scoped_temp_dir.h"
 #include "base/memory/ref_counted.h"
+#include "base/test/scoped_feature_list.h"
 #include "build/build_config.h"
 #include "content/public/browser/web_contents.h"
 #include "content/public/test/browser_test.h"
 #include "content/public/test/browser_test_base.h"
 #include "storage/browser/quota/quota_settings.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "ui/base/page_transition_types.h"
 
 #if defined(OS_MACOSX)
 #include "ui/base/test/scoped_fake_full_keyboard_access.h"
@@ skipping 236 matching lines @@
   // True if the about:blank tab should be opened when the browser is launched.
   bool open_about_blank_on_browser_launch_;
 
   // True if the accessibility test should run for a particular test case.
   // This is reset for every test case.
   bool run_accessibility_checks_for_test_case_;
 
   // We use hardcoded quota settings to have a consistent testing environment.
   storage::QuotaSettings quota_settings_;
 
+  base::test::ScopedFeatureList scoped_feature_list_;
+
 #if defined(OS_MACOSX)
   base::mac::ScopedNSAutoreleasePool* autorelease_pool_;
   std::unique_ptr<ScopedBundleSwizzlerMac> bundle_swizzler_;
 
   // Enable fake full keyboard access by default, so that tests don't depend on
   // system setting of the test machine. Also, this helps to make tests on Mac
   // more consistent with other platforms, where most views are focusable by
   // default.
   ui::test::ScopedFakeFullKeyboardAccess faked_full_keyboard_access_;
 #endif  // OS_MACOSX
 
 #if defined(OS_WIN)
   std::unique_ptr<base::win::ScopedCOMInitializer> com_initializer_;
 #endif
 };
 
 #endif  // CHROME_TEST_BASE_IN_PROCESS_BROWSER_TEST_H_