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

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

 // Copyright 2015 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/voicesearch_collection_view_controller.h"
 
-#import "base/ios/weak_nsobject.h"
 #include "base/logging.h"
 #include "base/mac/foundation_util.h"
-#import "base/mac/scoped_nsobject.h"
 #include "base/strings/sys_string_conversions.h"
 #include "components/prefs/pref_member.h"
 #include "components/prefs/pref_service.h"
 #import "ios/chrome/browser/ui/collection_view/cells/collection_view_switch_item.h"
 #import "ios/chrome/browser/ui/collection_view/cells/collection_view_text_item.h"
 #import "ios/chrome/browser/ui/collection_view/collection_view_model.h"
 #include "ios/chrome/browser/voice/speech_input_locale_config.h"
 #include "ios/chrome/grit/ios_strings.h"
 #include "ios/public/provider/chrome/browser/voice/voice_search_prefs.h"
 #import "ios/third_party/material_components_ios/src/components/CollectionCells/src/MaterialCollectionCells.h"
 #include "ui/base/l10n/l10n_util.h"
 #include "ui/base/l10n/l10n_util_mac.h"
 
+#if !defined(__has_feature) || !__has_feature(objc_arc)
+#error "This file requires ARC support."
+#endif
+
 namespace {
 
 typedef NS_ENUM(NSInteger, SectionIdentifier) {
   SectionIdentifierTTS = kSectionIdentifierEnumZero,
   SectionIdentifierLanguages,
 };
 
 typedef NS_ENUM(NSInteger, ItemType) {
   ItemTypeTTSEnabled = kItemTypeEnumZero,
   ItemTypeLanguagesLanguageOption,
@@ skipping 28 matching lines @@
   }
   return self;
 }
 
 - (void)loadModel {
   [super loadModel];
   CollectionViewModel* model = self.collectionViewModel;
 
   // TTS section.
   [model addSectionWithIdentifier:SectionIdentifierTTS];
-  CollectionViewSwitchItem* tts = [[[CollectionViewSwitchItem alloc]
-      initWithType:ItemTypeTTSEnabled] autorelease];
+  CollectionViewSwitchItem* tts =
+      [[CollectionViewSwitchItem alloc] initWithType:ItemTypeTTSEnabled];
   tts.text = l10n_util::GetNSString(IDS_IOS_VOICE_SEARCH_SETTING_TTS);
   tts.on = _ttsEnabled.GetValue();
   tts.enabled = [self currentLanguageSupportsTTS];
   [model addItem:tts toSectionWithIdentifier:SectionIdentifierTTS];
 
   // Variables used to populate the languages section.
   voice::SpeechInputLocaleConfig* localeConfig =
       voice::SpeechInputLocaleConfig::GetInstance();
   const std::vector<voice::SpeechInputLocale>& locales =
       localeConfig->GetAvailableLocales();
   std::string selectedLocaleCode = _selectedLanguage.GetValue();
 
   // Section with the list of voice search languages.
   [model addSectionWithIdentifier:SectionIdentifierLanguages];
   // Add default locale option.  Using an empty string for the voice search
   // locale pref indicates using the default locale.
-  CollectionViewTextItem* defaultItem = [[[CollectionViewTextItem alloc]
-      initWithType:ItemTypeLanguagesLanguageOption] autorelease];
+  CollectionViewTextItem* defaultItem = [[CollectionViewTextItem alloc]
+      initWithType:ItemTypeLanguagesLanguageOption];
   defaultItem.text =
       l10n_util::GetNSStringF(IDS_IOS_VOICE_SEARCH_SETTINGS_DEFAULT_LOCALE,
                               localeConfig->GetDefaultLocale().display_name);
   defaultItem.accessoryType = selectedLocaleCode.empty()
                                   ? MDCCollectionViewCellAccessoryCheckmark
                                   : MDCCollectionViewCellAccessoryNone;
   [model addItem:defaultItem
       toSectionWithIdentifier:SectionIdentifierLanguages];
   // Add locale list.
   for (NSUInteger ii = 0; ii < locales.size(); ii++) {
     voice::SpeechInputLocale locale = locales[ii];
     NSString* languageName = base::SysUTF16ToNSString(locale.display_name);
     BOOL checked = (locale.code == selectedLocaleCode);
 
-    CollectionViewTextItem* languageItem = [[[CollectionViewTextItem alloc]
-        initWithType:ItemTypeLanguagesLanguageOption] autorelease];
+    CollectionViewTextItem* languageItem = [[CollectionViewTextItem alloc]
+        initWithType:ItemTypeLanguagesLanguageOption];
     languageItem.text = languageName;
     languageItem.accessoryType = checked
                                      ? MDCCollectionViewCellAccessoryCheckmark
                                      : MDCCollectionViewCellAccessoryNone;
     [model addItem:languageItem
         toSectionWithIdentifier:SectionIdentifierLanguages];
   }
 }
 
 #pragma mark - UICollectionViewDelegate
@@ skipping 132 matching lines @@
 - (BOOL)currentLanguageSupportsTTS {
   voice::SpeechInputLocaleConfig* localeConfig =
       voice::SpeechInputLocaleConfig::GetInstance();
   std::string localeCode = _selectedLanguage.GetValue().empty()
                                ? localeConfig->GetDefaultLocale().code
                                : _selectedLanguage.GetValue();
   return localeConfig->IsTextToSpeechEnabledForCode(localeCode);
 }
 
 @end