[ObjC ARC] Converts ios/chrome/browser/ui/settings:unit_tests to ARC.

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"
@@ skipping 12 matching lines @@
 #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"
 
+#if !defined(__has_feature) || !__has_feature(objc_arc)
+#error "This file requires ARC support."
+#endif
+
 namespace {
 
 NSString* const kSpdyProxyEnabled = @"SpdyProxyEnabled";
 
 class PrivacyCollectionViewControllerTest
     : public CollectionViewControllerTest {
  protected:
   void SetUp() override {
     CollectionViewControllerTest::SetUp();
     TestChromeBrowserState::Builder test_cbs_builder;
     test_cbs_builder.SetPrefService(CreatePrefService());
     chrome_browser_state_ = test_cbs_builder.Build();
 
     NSUserDefaults* defaults = [NSUserDefaults standardUserDefaults];
-    initialValueForSpdyProxyEnabled_.reset(
-        [[defaults valueForKey:kSpdyProxyEnabled] copy]);
+    initialValueForSpdyProxyEnabled_ =
+        [[defaults valueForKey:kSpdyProxyEnabled] copy];
     [defaults setValue:@"Disabled" forKey:kSpdyProxyEnabled];
     CreateController();
   }
 
   void TearDown() override {
     if (initialValueForSpdyProxyEnabled_) {
       [[NSUserDefaults standardUserDefaults]
-          setObject:initialValueForSpdyProxyEnabled_.get()
+          setObject:initialValueForSpdyProxyEnabled_
              forKey:kSpdyProxyEnabled];
     } else {
       [[NSUserDefaults standardUserDefaults]
           removeObjectForKey:kSpdyProxyEnabled];
     }
     CollectionViewControllerTest::TearDown();
   }
 
   // Makes a PrefService to be used by the test.
   std::unique_ptr<sync_preferences::PrefServiceSyncable> CreatePrefService() {
     scoped_refptr<user_prefs::PrefRegistrySyncable> registry(
         new user_prefs::PrefRegistrySyncable);
     RegisterBrowserStatePrefs(registry.get());
     sync_preferences::PrefServiceMockFactory factory;
     return factory.CreateSyncable(registry.get());
   }
 
-  CollectionViewController* NewController() override {
+  CollectionViewController* InstantiateController() 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_;
+  NSString* initialValueForSpdyProxyEnabled_;
 };
 
 // Tests PrivacyCollectionViewController is set up with all appropriate items
 // and sections.
 TEST_F(PrivacyCollectionViewControllerTest, TestModel) {
   CheckController();
   EXPECT_EQ(4, NumberOfSections());
 
   int sectionIndex = 0;
   EXPECT_EQ(1, NumberOfItemsInSection(sectionIndex));
@@ skipping 11 matching lines @@
 
   if ([TouchToSearchPermissionsMediator isTouchToSearchAvailableOnDevice])
     expectedRows++;
   if (web::IsDoNotTrackSupported())
     expectedRows++;
   if (experimental_flags::IsPhysicalWebEnabled())
     expectedRows++;
   EXPECT_EQ(expectedRows, NumberOfItemsInSection(sectionIndex));
 
   CheckSectionHeaderWithId(IDS_IOS_OPTIONS_WEB_SERVICES_LABEL, sectionIndex);
-  base::scoped_nsobject<TouchToSearchPermissionsMediator>
-      touchToSearchPermissions([[TouchToSearchPermissionsMediator alloc]
-          initWithBrowserState:chrome_browser_state_.get()]);
+  TouchToSearchPermissionsMediator* touchToSearchPermissions =
+      [[TouchToSearchPermissionsMediator alloc]
+          initWithBrowserState:chrome_browser_state_.get()];
   NSString* contextualSearchSubtitle =
       ([touchToSearchPermissions preferenceState] == TouchToSearch::DISABLED)
           ? l10n_util::GetNSString(IDS_IOS_SETTING_ON)
           : l10n_util::GetNSString(IDS_IOS_SETTING_OFF);
   int row = 0;
 
   CheckSwitchCellStateAndTitleWithId(
       YES, IDS_IOS_OPTIONS_SEARCH_URL_SUGGESTIONS, sectionIndex, row++);
 
   if ([TouchToSearchPermissionsMediator isTouchToSearchAvailableOnDevice]) {
@@ skipping 33 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