[Sync] Fix namespaces for the browser_sync component.

ios/chrome/browser/passwords/ios_chrome_password_manager_client.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/passwords/ios_chrome_password_manager_client.h"
 
 #include <memory>
 #include <utility>
 
 #include "components/autofill/core/common/password_form.h"
@@ skipping 36 matching lines @@
           this,
           base::Bind(&GetSyncService, delegate_.browserState),
           base::Bind(&GetSigninManager, delegate_.browserState)) {
   saving_passwords_enabled_.Init(
       password_manager::prefs::kPasswordManagerSavingEnabled, GetPrefs());
 }
 
 IOSChromePasswordManagerClient::~IOSChromePasswordManagerClient() = default;
 
 PasswordSyncState IOSChromePasswordManagerClient::GetPasswordSyncState() const {
-  ProfileSyncService* sync_service =
+  browser_sync::ProfileSyncService* sync_service =
       IOSChromeProfileSyncServiceFactory::GetForBrowserState(
           delegate_.browserState);
   return password_manager_util::GetPasswordSyncState(sync_service);
 }
 
 bool IOSChromePasswordManagerClient::PromptUserToChooseCredentials(
     ScopedVector<autofill::PasswordForm> local_forms,
     ScopedVector<autofill::PasswordForm> federated_forms,
     const GURL& origin,
     const CredentialsCallback& callback) {
@@ skipping 64 matching lines @@
 }
 
 const GURL& IOSChromePasswordManagerClient::GetLastCommittedEntryURL() const {
   return delegate_.lastCommittedURL;
 }
 
 const password_manager::CredentialsFilter*
 IOSChromePasswordManagerClient::GetStoreResultFilter() const {
   return &credentials_filter_;
 }