Convert Guest New Tab page from i18n-* (JS) to use $i18n{} (C++)

chrome/browser/ui/webui/ntp/ntp_resource_cache.cc

Index: chrome/browser/ui/webui/ntp/ntp_resource_cache.cc
diff --git a/chrome/browser/ui/webui/ntp/ntp_resource_cache.cc b/chrome/browser/ui/webui/ntp/ntp_resource_cache.cc
index a6ab0c53f09f1ab867d7696471e0fc3676606c53..393ef9d3125bf6149d2d70fafc3ea8e09dde107a 100644
--- a/chrome/browser/ui/webui/ntp/ntp_resource_cache.cc
+++ b/chrome/browser/ui/webui/ntp/ntp_resource_cache.cc
@@ -369,8 +369,17 @@ void NTPResourceCache::CreateNewTabGuestHTML() {
   static const base::StringPiece guest_tab_html(
       ResourceBundle::GetSharedInstance().GetRawDataResource(guest_tab_ids));
 
+#if defined(OS_CHROMEOS)
+  // TODO(dbeam): convert c/b/resources/chromeos/guest_session_tab.html from
+  // i18n-* to $i18n{}.
   std::string full_html = webui::GetI18nTemplateHtml(
       guest_tab_html, &localized_strings);
+#else
+  ui::TemplateReplacements replacements;
+  ui::TemplateReplacementsFromDictionaryValue(localized_strings, &replacements);
+  std::string full_html =
+      ui::ReplaceTemplateExpressions(guest_tab_html, replacements);
+#endif
 
   new_tab_guest_html_ = base::RefCountedString::TakeString(&full_html);
 }