Fix ios_chrome_unittests to crash on DCHECK failure.

ios/chrome/browser/ui/settings/privacy_collection_view_controller_unittest.mm

 // Copyright 2013 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.
 
 #import "ios/chrome/browser/ui/settings/privacy_collection_view_controller.h"
 
 #include <memory>
 
 #include "base/ios/ios_util.h"
 #include "base/memory/ptr_util.h"
 #include "base/strings/sys_string_conversions.h"
 #include "components/handoff/pref_names_ios.h"
 #include "components/prefs/pref_service.h"
 #include "components/sync_preferences/pref_service_mock_factory.h"
 #include "components/sync_preferences/pref_service_syncable.h"
 #include "ios/chrome/browser/application_context.h"
 #import "ios/chrome/browser/autofill/autofill_controller.h"
 #include "ios/chrome/browser/browser_state/test_chrome_browser_state.h"
 #include "ios/chrome/browser/experimental_flags.h"
 #include "ios/chrome/browser/pref_names.h"
 #include "ios/chrome/browser/prefs/browser_prefs.h"
 #import "ios/chrome/browser/ui/collection_view/collection_view_controller_test.h"
 #import "ios/chrome/browser/ui/contextual_search/touch_to_search_permissions_mediator.h"
 #import "ios/chrome/browser/ui/settings/physical_web_collection_view_controller.h"
 #include "ios/chrome/grit/ios_chromium_strings.h"
 #include "ios/chrome/grit/ios_strings.h"
+#include "ios/chrome/test/ios_chrome_scoped_testing_local_state.h"
 #include "ios/web/public/test/test_web_thread_bundle.h"
 #include "ios/web/public/web_capabilities.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "ui/base/l10n/l10n_util.h"
 
 namespace {
 
 NSString* const kSpdyProxyEnabled = @"SpdyProxyEnabled";
 
 class PrivacyCollectionViewControllerTest
@@ skipping 32 matching lines @@
     sync_preferences::PrefServiceMockFactory factory;
     return factory.CreateSyncable(registry.get());
   }
 
   CollectionViewController* NewController() override {
     return [[PrivacyCollectionViewController alloc]
         initWithBrowserState:chrome_browser_state_.get()];
   }
 
   web::TestWebThreadBundle thread_bundle_;
+  IOSChromeScopedTestingLocalState local_state_;
   std::unique_ptr<TestChromeBrowserState> chrome_browser_state_;
   base::scoped_nsobject<NSString> initialValueForSpdyProxyEnabled_;
 };
 
 // Tests PrivacyCollectionViewController is set up with all appropriate items
 // and sections.
 TEST_F(PrivacyCollectionViewControllerTest, TestModel) {
   CheckController();
   EXPECT_EQ(4, NumberOfSections());
 
@@ skipping 70 matching lines @@
   EXPECT_EQ(1, NumberOfItemsInSection(sectionIndex));
   CheckSectionFooterWithId(IDS_IOS_OPTIONS_PRIVACY_FOOTER, sectionIndex);
 
   sectionIndex++;
   EXPECT_EQ(1, NumberOfItemsInSection(sectionIndex));
   CheckTextCellTitle(l10n_util::GetNSString(IDS_IOS_CLEAR_BROWSING_DATA_TITLE),
                      sectionIndex, 0);
 }
 
 }  // namespace