Fix PasswordsSettingsTestCase.testCopyPasswordToast

ios/chrome/browser/ui/settings/password_details_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/password_details_collection_view_controller.h"
 
 #include "base/mac/foundation_util.h"
 #include "base/strings/sys_string_conversions.h"
 #include "components/autofill/core/common/password_form.h"
 #include "components/password_manager/core/browser/affiliation_utils.h"
@@ skipping 79 matching lines @@
   self = [super initWithStyle:CollectionViewControllerStyleAppBar];
   if (self) {
     _weakDelegate = delegate;
     _weakReauthenticationModule = reauthenticationModule;
     _passwordForm = passwordForm;
     _username = [username copy];
     _password = [password copy];
     _site = base::SysUTF8ToNSString(_passwordForm.origin.spec());
     self.title =
         [PasswordDetailsCollectionViewController simplifyOrigin:origin];
+    self.collectionViewAccessibilityIdentifier =
+        @"PasswordDetailsCollectionViewController";
     NSNotificationCenter* defaultCenter = [NSNotificationCenter defaultCenter];
     [defaultCenter addObserver:self
                       selector:@selector(hidePassword)
                           name:UIApplicationDidEnterBackgroundNotification
                         object:nil];
 
     [self loadModel];
   }
   return self;
 }
@@ skipping 260 matching lines @@
             l10n_util::GetNSString(IDS_IOS_SETTINGS_PASSWORD_REAUTH_REASON_COPY)
                                  handler:copyPasswordHandler];
   }
 }
 
 - (void)showCopyResultToast:(NSString*)message {
   // TODO(crbug.com/159166): Route this through some delegate API to be able
   // to mock it in the unittest, and avoid having an EGTest just for that?
   MDCSnackbarMessage* copyPasswordResultMessage =
       [MDCSnackbarMessage messageWithText:message];
+  copyPasswordResultMessage.category = @"PasswordsSnackbarCategory";
   [MDCSnackbarManager showMessage:copyPasswordResultMessage];
 }
 
 - (void)deletePassword {
   [_weakDelegate deletePassword:_passwordForm];
 }
 
 #pragma mark - UICollectionViewDelegate
 
 - (void)collectionView:(UICollectionView*)collectionView
@@ skipping 44 matching lines @@
 }
 
 #pragma mark - ForTesting
 
 - (void)setReauthenticationModule:
     (id<ReauthenticationProtocol>)reauthenticationModule {
   _weakReauthenticationModule = reauthenticationModule;
 }
 
 @end