[ObjC ARC] Converts ios/chrome/app/safe_mode:eg_tests to ARC.

ios/chrome/app/safe_mode/safe_mode_egtest.mm

 // Copyright 2016 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 <EarlGrey/EarlGrey.h>
 #import <XCTest/XCTest.h>
 
 #include "base/logging.h"
 #include "base/mac/foundation_util.h"
-#include "base/mac/scoped_nsobject.h"
 #import "ios/chrome/app/chrome_overlay_window.h"
 #import "ios/chrome/app/safe_mode/safe_mode_view_controller.h"
 #import "ios/chrome/browser/ui/main/main_view_controller.h"
 #include "ios/chrome/grit/ios_chromium_strings.h"
 #import "ios/chrome/test/base/scoped_block_swizzler.h"
 #import "ios/chrome/test/earl_grey/chrome_test_case.h"
 
+#if !defined(__has_feature) || !__has_feature(objc_arc)
+#error "This file requires ARC support."
+#endif
+
 namespace {
 
 // Returns the top view controller for rendering the Safe Mode Controller.
 UIViewController* GetActiveViewController() {
   UIWindow* mainWindow = [[UIApplication sharedApplication] keyWindow];
   DCHECK([mainWindow isKindOfClass:[ChromeOverlayWindow class]]);
   MainViewController* main_view_controller =
       base::mac::ObjCCast<MainViewController>([mainWindow rootViewController]);
   return main_view_controller.activeViewController;
 }
@@ skipping 45 matching lines @@
 // reports to upload.
 - (void)testSafeModeSendingCrashReport {
   // Mocks the +hasReportToUpload method by swizzling to return positively that
   // there are crash reports to upload.
   ScopedBlockSwizzler hasReport([SafeModeViewController class],
                                 @selector(hasReportToUpload), ^{
                                   return YES;
                                 });
 
   // Instantiates a Safe Mode controller and displays it.
-  base::scoped_nsobject<SafeModeViewController> safeModeController(
-      [[SafeModeViewController alloc] initWithDelegate:nil]);
+  SafeModeViewController* safeModeController =
+      [[SafeModeViewController alloc] initWithDelegate:nil];
   [GetActiveViewController() presentViewController:safeModeController
                                           animated:NO
                                         completion:nil];
   // Verifies screen content that shows that crash report is being uploaded.
   AssertMessageOnPage(NSLocalizedString(@"IDS_IOS_SAFE_MODE_AW_SNAP", @""));
   AssertMessageOnPage(
       NSLocalizedString(@"IDS_IOS_SAFE_MODE_UNKNOWN_CAUSE", @""));
   AssertTryAgainButtonOnPage();
   AssertMessageOnPage(
       NSLocalizedString(@"IDS_IOS_SAFE_MODE_SENDING_CRASH_REPORT", @""));
 }
 
 // Tests that Safe Mode screen is displayed with a message that there are
 // jailbroken mods that caused a crash. Crash reports are not sent.
 - (void)testSafeModeDetectedThirdPartyMods {
   // Mocks the +detectedThirdPartyMods method by swizzling to return positively
   // that device appears to be jailbroken and contains third party mods.
   ScopedBlockSwizzler thirdParty([SafeModeViewController class],
                                  @selector(detectedThirdPartyMods), ^{
                                    return YES;
                                  });
   // Returns an empty list to simulate no known mods detected.
   ScopedBlockSwizzler badModules([SafeModeViewController class],
                                  @selector(startupCrashModules), ^{
                                    return @[];
                                  });
 
   // Instantiates a Safe Mode controller and displays it.
-  base::scoped_nsobject<SafeModeViewController> safeModeController(
-      [[SafeModeViewController alloc] initWithDelegate:nil]);
+  SafeModeViewController* safeModeController =
+      [[SafeModeViewController alloc] initWithDelegate:nil];
   [GetActiveViewController() presentViewController:safeModeController
                                           animated:NO
                                         completion:nil];
   // Verifies screen content that does not show crash report being uploaded.
   // When devices are jailbroken, the crash reports are not very useful.
   AssertMessageOnPage(NSLocalizedString(@"IDS_IOS_SAFE_MODE_AW_SNAP", @""));
   AssertMessageOnPage(
       NSLocalizedString(@"IDS_IOS_SAFE_MODE_TWEAKS_FOUND", @""));
   AssertTryAgainButtonOnPage();
   AssertMessageNotOnPage(
@@ skipping 14 matching lines @@
   NSArray* badModulesList = @[ @"iAmBad", @"MJackson" ];
   ScopedBlockSwizzler badModules([SafeModeViewController class],
                                  @selector(startupCrashModules), ^{
                                    return badModulesList;
                                  });
   ScopedBlockSwizzler hasReport([SafeModeViewController class],
                                 @selector(hasReportToUpload), ^{
                                   return YES;
                                 });
   // Instantiates a Safe Mode controller and displays it.
-  base::scoped_nsobject<SafeModeViewController> safeModeController(
-      [[SafeModeViewController alloc] initWithDelegate:nil]);
+  SafeModeViewController* safeModeController =
+      [[SafeModeViewController alloc] initWithDelegate:nil];
   [GetActiveViewController() presentViewController:safeModeController
                                           animated:NO
                                         completion:nil];
   // Verifies screen content that does not show crash report being uploaded.
   // When devices are jailbroken, the crash reports are not very useful.
   AssertMessageOnPage(NSLocalizedString(@"IDS_IOS_SAFE_MODE_AW_SNAP", @""));
   // Constructs the list of bad mods based on |badModulesList| above.
   NSString* message =
       [NSLocalizedString(@"IDS_IOS_SAFE_MODE_NAMED_TWEAKS_FOUND", @"")
           stringByAppendingString:@"\n\n    iAmBad\n    MJackson"];
   AssertMessageOnPage(message);
   AssertTryAgainButtonOnPage();
   AssertMessageNotOnPage(
       NSLocalizedString(@"IDS_IOS_SAFE_MODE_SENDING_CRASH_REPORT", @""));
 }
 
 @end