Revert to the old back arrow style with NavigationBar

ios/chrome/browser/ui/settings/settings_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 <UIKit/UIKit.h>
 #import <XCTest/XCTest.h>
 #include <map>
 
 #include "base/bind.h"
@@ skipping 255 matching lines @@
          usingSearchAction:grey_scrollInDirection(kGREYDirectionDown,
                                                   kScrollDisplacement)
       onElementWithMatcher:toolsMenuTableViewMatcher] performAction:grey_tap()];
   [[[EarlGrey selectElementWithMatcher:settingToTap]
          usingSearchAction:grey_scrollInDirection(kGREYDirectionDown,
                                                   kScrollDisplacement)
       onElementWithMatcher:settingsCollectionViewMatcher]
       performAction:grey_tap()];
 }
 
-// Closes the a sub-settings menu, and then the general Settings menu.
+// Closes a sub-settings menu, and then the general Settings menu.
 - (void)closeSubSettingsMenu {
   [[EarlGrey
       selectElementWithMatcher:grey_allOf(
-                                   grey_accessibilityID(@"back_bar_button"),
+                                   grey_accessibilityID(@"ic_arrow_back"),
                                    grey_accessibilityTrait(
                                        UIAccessibilityTraitButton),
                                    nil)] performAction:grey_tap()];
   [[EarlGrey
       selectElementWithMatcher:chrome_test_util::buttonWithAccessibilityLabelId(
                                    IDS_IOS_NAVIGATION_BAR_DONE_BUTTON)]
       performAction:grey_tap()];
 }
 
 // Performs the steps to clear browsing data. Must be called on the
@@ skipping 568 matching lines @@
 }
 
 // Verifies the UI elements are accessible on the Voice Search page.
 - (void)testAccessibilityOnVoiceSearch {
   [self openSubSettingMenu:voiceSearchButton()];
   chrome_test_util::VerifyAccessibilityForCurrentScreen();
   [self closeSubSettingsMenu];
 }
 
 @end