[MD settings] i18n template replacements in shared HTML resources

ui/base/webui/jstemplate_builder.cc

 // Copyright 2013 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.
 
 // A helper function for using JsTemplate. See jstemplate_builder.h for more
 // info.
 
 #include "ui/base/webui/jstemplate_builder.h"
 
 #include "base/json/json_file_value_serializer.h"
 #include "base/json/json_string_value_serializer.h"
 #include "base/logging.h"
 #include "base/strings/string_util.h"
 #include "ui/base/layout.h"
 #include "ui/base/resource/resource_bundle.h"
+#include "ui/base/template_expressions.h"
 #include "ui/resources/grit/webui_resources.h"
 
 namespace webui {
 
 namespace {
 
 // Appends a script tag with a variable name |templateData| that has the JSON
 // assigned to it.
 void AppendJsonHtml(const base::DictionaryValue* json, std::string* output) {
   std::string javascript_string;
@@ skipping 68 matching lines @@
 
   output->append("<script>");
   i18n_template_src.AppendToString(output);
   output->append("</script>");
 }
 
 }  // namespace
 
 std::string GetI18nTemplateHtml(const base::StringPiece& html_template,
                                 const base::DictionaryValue* json) {
-  std::string output(html_template.data(), html_template.size());
+  ui::TemplateReplacements replacements;
+  ui::TemplateReplacementsFromDictionaryValue(*json, &replacements);
+  std::string output =
+      ui::ReplaceTemplateExpressions(html_template, replacements);
+
+  // TODO(dschuyler): After the i18n-content and i18n-values are replaced with
+  // $i18n{} replacements, we will be able to return output at this point.
+  // Remove Append*() lines that builds up the i18n replacement work to be done
+  // in JavaScript.
   AppendLoadTimeData(&output);
   AppendJsonHtml(json, &output);
   AppendI18nTemplateSourceHtml(&output);
+
   return output;
 }
 
 std::string GetTemplatesHtml(const base::StringPiece& html_template,
                              const base::DictionaryValue* json,
                              const base::StringPiece& template_id) {
   std::string output(html_template.data(), html_template.size());
   AppendLoadTimeData(&output);
   AppendJsonHtml(json, &output);
   AppendI18nTemplateSourceHtml(&output);
   AppendJsTemplateSourceHtml(&output);
   AppendJsTemplateProcessHtml(template_id, &output);
   return output;
 }
 
 void AppendJsonJS(const base::DictionaryValue* json, std::string* output) {
   // Convert the template data to a json string.
   DCHECK(json) << "must include json data structure";
 
   std::string jstext;
   JSONStringValueSerializer serializer(&jstext);
   serializer.Serialize(*json);
   output->append("loadTimeData.data = ");
   output->append(jstext);
   output->append(";");
 }
 
 }  // namespace webui