Cache --whitelisted-extension-id in SimpleFeature.

chrome/common/extensions/manifest_tests/extension_manifests_initvalue_unittest.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 "base/command_line.h"
 #include "base/i18n/rtl.h"
 #include "base/path_service.h"
 #include "base/strings/utf_string_conversions.h"
 #include "chrome/common/chrome_paths.h"
 #include "chrome/common/extensions/manifest_tests/chrome_manifest_test.h"
 #include "components/crx_file/id_util.h"
 #include "extensions/common/extension.h"
+#include "extensions/common/features/simple_feature.h"
 #include "extensions/common/manifest_constants.h"
 #include "extensions/common/manifest_handlers/options_page_info.h"
 #include "extensions/common/switches.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "ui/base/l10n/l10n_util.h"
 
 namespace extensions {
 
 namespace {
 
 // The ID of test manifests requiring whitelisting.
 const char kWhitelistID[] = "lmadimbbgapmngbiclpjjngmdickadpl";
 
 }  // namespace
 
 namespace errors = manifest_errors;
 namespace keys = manifest_keys;
 
 class InitValueManifestTest : public ChromeManifestTest {
 };
 
 TEST_F(InitValueManifestTest, InitFromValueInvalid) {
-  base::CommandLine::ForCurrentProcess()->AppendSwitchASCII(
-      extensions::switches::kWhitelistedExtensionID, kWhitelistID);
+  extensions::SimpleFeature::ScopedWhitelistForTest whitelist(kWhitelistID);
   Testcase testcases[] = {
       Testcase("init_invalid_version_missing.json", errors::kInvalidVersion),
       Testcase("init_invalid_version_invalid.json", errors::kInvalidVersion),
       Testcase("init_invalid_version_name_invalid.json",
                errors::kInvalidVersionName),
       Testcase("init_invalid_name_missing.json", errors::kInvalidName),
       Testcase("init_invalid_name_invalid.json", errors::kInvalidName),
       Testcase("init_invalid_description_invalid.json",
                errors::kInvalidDescription),
       Testcase("init_invalid_icons_invalid.json", errors::kInvalidIcons),
@@ skipping 125 matching lines @@
 
   localized_name = base::WideToUTF16(L"Dictionary (\x05D1\x05D2" L" Google)");
   base::i18n::AdjustStringForLocaleDirection(&localized_name);
   EXPECT_EQ(localized_name, base::UTF8ToUTF16(extension->name()));
 
   // Reset locale.
   base::i18n::SetICUDefaultLocale(locale);
 }
 
 }  // namespace extensions