Implement Web Restrictions in WebView.

components/supervised_user_error_page/supervised_user_error_page.h

 // 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.
 
 #ifndef COMPONENTS_SUPERVISED_USER_ERROR_PAGE_SUPERVISED_USER_ERROR_PAGE_H_
 #define COMPONENTS_SUPERVISED_USER_ERROR_PAGE_SUPERVISED_USER_ERROR_PAGE_H_
 
 #include <string>
 
-#include "base/strings/string16.h"
-
 namespace supervised_user_error_page {
 
 enum FilteringBehaviorReason {
   DEFAULT,
   ASYNC_CHECKER,
   BLACKLIST,
   MANUAL,
   WHITELIST
 };
 
 int GetBlockMessageID(
     supervised_user_error_page::FilteringBehaviorReason reason,
     bool is_child_account,
     bool single_parent);
 
 std::string BuildHtml(bool allow_access_requests,
                       const std::string& profile_image_url,
                       const std::string& profile_image_url2,
-                      const base::string16& custodian,
-                      const base::string16& custodian_email,
-                      const base::string16& second_custodian,
-                      const base::string16& second_custodian_email,
+                      const std::string& custodian,
+                      const std::string& custodian_email,
+                      const std::string& second_custodian,
+                      const std::string& second_custodian_email,
                       bool is_child_account,
                       FilteringBehaviorReason reason,
                       const std::string& app_locale);
 
 }  //  namespace supervised_user_error_page
 
 #endif // COMPONENTS_SUPERVISED_USER_ERROR_PAGE_SUPERVISED_USER_ERROR_PAGE_H_