Settings People Sync: Add 'Reset Sync' message for forgotten passphrase.

chrome/browser/ui/webui/settings/md_settings_localized_strings_provider.cc

 // 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.
 
 #include "chrome/browser/ui/webui/settings/md_settings_localized_strings_provider.h"
 
 #include <string>
 
 #include "base/command_line.h"
 #include "base/i18n/number_formatting.h"
@@ skipping 945 matching lines @@
 
   // Format numbers to be used on the pin keyboard.
   for (int j = 0; j <= 9; j++) {
     html_source->AddString("pinKeyboard" + base::IntToString(j),
                            base::FormatNumber(int64_t{j}));
   }
 
   html_source->AddString("autofillHelpURL", autofill::kHelpURL);
   html_source->AddString("supervisedUsersUrl",
                          chrome::kLegacySupervisedUserManagementURL);
+
   std::string sync_dashboard_url =
       google_util::AppendGoogleLocaleParam(
           GURL(chrome::kSyncGoogleDashboardURL),
           g_browser_process->GetApplicationLocale())
           .spec();
   html_source->AddString("syncDashboardUrl", sync_dashboard_url);
   html_source->AddString(
-      "activityControlsUrl",
-      base::ASCIIToUTF16(chrome::kGoogleAccountActivityControlsURL));
+      "passphraseRecover",
+      l10n_util::GetStringFUTF8(IDS_SETTINGS_PASSPHRASE_RECOVER,
+                                base::ASCIIToUTF16(sync_dashboard_url)));
+
+  html_source->AddString("activityControlsUrl",
+                         chrome::kGoogleAccountActivityControlsURL);
 }
 
 void AddPrintingStrings(content::WebUIDataSource* html_source) {
   LocalizedString localized_strings[] = {
     {"printingPageTitle", IDS_SETTINGS_PRINTING},
     {"printingCloudPrintLearnMoreLabel",
      IDS_SETTINGS_PRINTING_CLOUD_PRINT_LEARN_MORE_LABEL},
     {"printingNotificationsLabel", IDS_SETTINGS_PRINTING_NOTIFICATIONS_LABEL},
     {"printingManageCloudPrintDevices",
      IDS_SETTINGS_PRINTING_MANAGE_CLOUD_PRINT_DEVICES},
@@ skipping 443 matching lines @@
 #endif
   AddUsersStrings(html_source);
   AddWebContentStrings(html_source);
 
   policy_indicator::AddLocalizedStrings(html_source);
 
   html_source->SetJsonPath(kLocalizedStringsFile);
 }
 
 }  // namespace settings