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

ios/chrome/browser/ui/toolbar/toolbar_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/ios/ios_util.h"
 #include "components/strings/grit/components_strings.h"
 #import "ios/chrome/browser/ui/commands/generic_chrome_command.h"
 #include "ios/chrome/browser/ui/commands/ios_command_ids.h"
 #import "ios/chrome/browser/ui/ntp/new_tab_page_controller.h"
 #import "ios/chrome/browser/ui/omnibox/omnibox_popup_material_row.h"
 #import "ios/chrome/browser/ui/toolbar/toolbar_controller.h"
 #import "ios/chrome/browser/ui/tools_menu/tools_menu_view_controller.h"
 #include "ios/chrome/browser/ui/ui_util.h"
 #include "ios/chrome/grit/ios_strings.h"
 #import "ios/chrome/test/app/chrome_test_util.h"
 #import "ios/chrome/test/app/tab_test_util.h"
 #import "ios/chrome/test/earl_grey/chrome_assertions.h"
 #import "ios/chrome/test/earl_grey/chrome_earl_grey.h"
 #import "ios/chrome/test/earl_grey/chrome_earl_grey_ui.h"
 #import "ios/chrome/test/earl_grey/chrome_matchers.h"
 #import "ios/chrome/test/earl_grey/chrome_test_case.h"
 #import "ios/testing/earl_grey/disabled_test_macros.h"
 #import "ios/web/public/test/http_server.h"
 #include "ios/web/public/test/http_server_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
+
 using chrome_test_util::ButtonWithAccessibilityLabelId;
 using chrome_test_util::OmniboxText;
 using chrome_test_util::WebViewContainingText;
 
 // Toolbar integration tests for Chrome.
 @interface ToolbarTestCase : ChromeTestCase
 @end
 
 namespace {
 
 // Displays the |panel_type| new tab page.  On a phone this will send a command
 // to display a dialog, on tablet this calls -selectPanel to slide the NTP.
 void SelectNewTabPagePanel(NewTabPage::PanelIdentifier panel_type) {
   NewTabPageController* ntp_controller =
       chrome_test_util::GetCurrentNewTabPageController();
   if (IsIPadIdiom()) {
     [ntp_controller selectPanel:panel_type];
   } else {
     NSUInteger tag = 0;
     if (panel_type == NewTabPage::PanelIdentifier::kBookmarksPanel) {
       tag = IDC_SHOW_BOOKMARK_MANAGER;
     } else if (panel_type == NewTabPage::PanelIdentifier::kOpenTabsPanel) {
       tag = IDC_SHOW_OTHER_DEVICES;
     }
     if (tag) {
-      base::scoped_nsobject<GenericChromeCommand> command(
-          [[GenericChromeCommand alloc] initWithTag:tag]);
+      GenericChromeCommand* command =
+          [[GenericChromeCommand alloc] initWithTag:tag];
       chrome_test_util::RunCommandWithActiveViewController(command);
     }
   }
   [[GREYUIThreadExecutor sharedInstance] drainUntilIdle];
 }
 
 }  // namespace
 
 @implementation ToolbarTestCase
 
@@ skipping 374 matching lines @@
 
     [[EarlGrey selectElementWithMatcher:grey_accessibilityLabel(clearText)]
         performAction:grey_tap()];
     [[EarlGrey selectElementWithMatcher:chrome_test_util::Omnibox()]
         assertWithMatcher:chrome_test_util::OmniboxText("")];
 
     SelectNewTabPagePanel(NewTabPage::kMostVisitedPanel);
   }
 }
 @end