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

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

Index: ios/chrome/browser/ui/settings/password_details_collection_view_controller_unittest.mm
diff --git a/ios/chrome/browser/ui/settings/password_details_collection_view_controller_unittest.mm b/ios/chrome/browser/ui/settings/password_details_collection_view_controller_unittest.mm
index 1b588974ac4ff3670c0542718fb8420d4bad076d..f53bbd87d52cec9569d002f0a86d3cfa40c13d57 100644
--- a/ios/chrome/browser/ui/settings/password_details_collection_view_controller_unittest.mm
+++ b/ios/chrome/browser/ui/settings/password_details_collection_view_controller_unittest.mm
@@ -5,7 +5,6 @@
 #import "ios/chrome/browser/ui/settings/password_details_collection_view_controller.h"
 
 #include "base/mac/foundation_util.h"
-#import "base/mac/scoped_nsobject.h"
 #include "base/strings/sys_string_conversions.h"
 #include "components/autofill/core/common/password_form.h"
 #import "ios/chrome/browser/ui/collection_view/collection_view_controller_test.h"
@@ -18,6 +17,10 @@
 #import "testing/gtest_mac.h"
 #include "ui/base/l10n/l10n_util.h"
 
+#if !defined(__has_feature) || !__has_feature(objc_arc)
+#error "This file requires ARC support."
+#endif
+
 @interface MockReauthenticationModule : NSObject<ReauthenticationProtocol>
 
 @property(nonatomic, copy) NSString* localizedReasonForAuthentication;
@@ -81,11 +84,11 @@ class PasswordDetailsCollectionViewControllerTest
   void SetUp() override {
     CollectionViewControllerTest::SetUp();
     origin_ = @"testorigin.com";
-    delegate_.reset([[MockSavePasswordsCollectionViewController alloc] init]);
-    reauthenticationModule_.reset([[MockReauthenticationModule alloc] init]);
+    delegate_ = [[MockSavePasswordsCollectionViewController alloc] init];
+    reauthenticationModule_ = [[MockReauthenticationModule alloc] init];
   }
 
-  CollectionViewController* NewController() override NS_RETURNS_RETAINED {
+  CollectionViewController* InstantiateController() override {
     return [[PasswordDetailsCollectionViewController alloc]
           initWithPasswordForm:*(new autofill::PasswordForm())
                       delegate:delegate_
@@ -101,8 +104,8 @@ class PasswordDetailsCollectionViewControllerTest
   }
 
   web::TestWebThreadBundle thread_bundle_;
-  base::scoped_nsobject<MockSavePasswordsCollectionViewController> delegate_;
-  base::scoped_nsobject<MockReauthenticationModule> reauthenticationModule_;
+  MockSavePasswordsCollectionViewController* delegate_;
+  MockReauthenticationModule* reauthenticationModule_;
   NSString* origin_;
 };
 
@@ -165,7 +168,7 @@ TEST_F(PasswordDetailsCollectionViewControllerTest, ShowPassword) {
   EXPECT_TRUE(passwordItem.showingText);
   EXPECT_NSEQ(
       l10n_util::GetNSString(IDS_IOS_SETTINGS_PASSWORD_REAUTH_REASON_SHOW),
-      reauthenticationModule_.get().localizedReasonForAuthentication);
+      reauthenticationModule_.localizedReasonForAuthentication);
   CheckTextCellTitleWithId(IDS_IOS_SETTINGS_PASSWORD_HIDE_BUTTON,
                            kPasswordSection, kShowHideButtonItem);
 }
@@ -197,7 +200,7 @@ TEST_F(PasswordDetailsCollectionViewControllerTest, CopyPassword) {
   EXPECT_NSEQ(kPassword, generalPasteboard.string);
   EXPECT_NSEQ(
       l10n_util::GetNSString(IDS_IOS_SETTINGS_PASSWORD_REAUTH_REASON_COPY),
-      reauthenticationModule_.get().localizedReasonForAuthentication);
+      reauthenticationModule_.localizedReasonForAuthentication);
 }
 
 TEST_F(PasswordDetailsCollectionViewControllerTest, DeletePassword) {
@@ -205,7 +208,7 @@ TEST_F(PasswordDetailsCollectionViewControllerTest, DeletePassword) {
   [controller() collectionView:[controller() collectionView]
       didSelectItemAtIndexPath:[NSIndexPath indexPathForRow:kDeleteButtonItem
                                                   inSection:kPasswordSection]];
-  EXPECT_EQ(1, delegate_.get().numberOfCallsToDeletePassword);
+  EXPECT_EQ(1, delegate_.numberOfCallsToDeletePassword);
 }
 
 }  // namespace