switch ntp to jstemplate v2

chrome/common/jstemplate_builder.cc

 // Copyright (c) 2012 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 "chrome/common/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/string_util.h"
 #include "grit/common_resources.h"
 #include "ui/base/resource/resource_bundle.h"
 
+namespace {
+
+// True when building version 2 templates. See UseVersion2 class.
+bool g_version2 = false;
+
+}  // namespace
+
 namespace jstemplate_builder {
 
+UseVersion2::UseVersion2() : previous_value_(g_version2) {
+  g_version2 = true;
+}
+
+UseVersion2::~UseVersion2() {
+  g_version2 = previous_value_;
+}
+
 std::string GetTemplateHtml(const base::StringPiece& html_template,
                             const DictionaryValue* json,
                             const base::StringPiece& template_id) {
   std::string output(html_template.data(), html_template.size());
   AppendJsonHtml(json, &output);
   AppendJsTemplateSourceHtml(&output);
   AppendJsTemplateProcessHtml(template_id, &output);
   return output;
 }
 
@@ skipping 13 matching lines @@
   AppendI18nTemplateSourceHtml(&output);
   AppendJsTemplateSourceHtml(&output);
   AppendJsonHtml(json, &output);
   AppendI18nTemplateProcessHtml(&output);
   AppendJsTemplateProcessHtml(template_id, &output);
   return output;
 }
 
 void AppendJsonHtml(const DictionaryValue* json, std::string* output) {
   std::string javascript_string;
-  AppendJsonJS(json, &javascript_string);
+  jstemplate_builder::AppendJsonJS(json, &javascript_string);
 
   // </ confuses the HTML parser because it could be a </script> tag.  So we
   // replace </ with <\/.  The extra \ will be ignored by the JS engine.
   ReplaceSubstringsAfterOffset(&javascript_string, 0, "</", "<\\/");
 
   output->append("<script>");
   output->append(javascript_string);
   output->append("</script>");
 }
 
 void AppendJsonJS(const 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("var templateData = ");
+  output->append(g_version2 ? "loadTimeData.data = " : "var templateData = ");
   output->append(jstext);
   output->append(";");
 }
-
-void AppendJsonJS2(const 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(";");
-}
 
 void AppendJsTemplateSourceHtml(std::string* output) {
   // fetch and cache the pointer of the jstemplate resource source text.
   static const base::StringPiece jstemplate_src(
       ResourceBundle::GetSharedInstance().GetRawDataResource(
           IDR_JSTEMPLATE_JS));
 
   if (jstemplate_src.empty()) {
     NOTREACHED() << "Unable to get jstemplate src";
     return;
@@ skipping 11 matching lines @@
   output->append(template_id.data(), template_id.size());
   output->append("');");
   output->append("jstProcess(new JsEvalContext(templateData), tp);");
   output->append("</script>");
 }
 
 void AppendI18nTemplateSourceHtml(std::string* output) {
   // fetch and cache the pointer of the jstemplate resource source text.
   static const base::StringPiece i18n_template_src(
       ResourceBundle::GetSharedInstance().GetRawDataResource(
-          IDR_I18N_TEMPLATE_JS));
+          g_version2 ? IDR_I18N_TEMPLATE2_JS : IDR_I18N_TEMPLATE_JS));
 
   if (i18n_template_src.empty()) {
     NOTREACHED() << "Unable to get i18n template src";
     return;
   }
 
   output->append("<script>");
   output->append(i18n_template_src.data(), i18n_template_src.size());
   output->append("</script>");
 }
 
 void AppendI18nTemplateProcessHtml(std::string* output) {
+  if (g_version2)
+    return;
+
   static const base::StringPiece i18n_process_src(
       ResourceBundle::GetSharedInstance().GetRawDataResource(
           IDR_I18N_PROCESS_JS));
 
   if (i18n_process_src.empty()) {
     NOTREACHED() << "Unable to get i18n process src";
     return;
   }
 
   output->append("<script>");
   output->append(i18n_process_src.data(), i18n_process_src.size());
   output->append("</script>");
 }
 
 }  // namespace jstemplate_builder