switch ntp to jstemplate v2

chrome/common/jstemplate_builder.h

 // 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.
 
 // This provides some helper methods for building and rendering an
 // internal html page.  The flow is as follows:
 // - instantiate a builder given a webframe that we're going to render content
 //   into
 // - load the template html and load the jstemplate javascript into the frame
 // - given a json data object, run the jstemplate javascript which fills in
 //   template values
 
 #ifndef CHROME_COMMON_JSTEMPLATE_BUILDER_H_
 #define CHROME_COMMON_JSTEMPLATE_BUILDER_H_
 #pragma once
 
 #include <string>
 
 #include "base/string_piece.h"
 
 namespace base {
 class DictionaryValue;
 }
 
 namespace jstemplate_builder {
 
+// While an object of this class is in scope, the template builder will output
+// version 2 html. Version 2 uses load_time_data.js and i18n_template2.js, and
+// should soon become the default.
+class UseVersion2 {
+ public:
+  UseVersion2();
+  ~UseVersion2();
+
+ private:
+  bool previous_value_;
+
+  DISALLOW_COPY_AND_ASSIGN(UseVersion2);
+};
+
 // A helper function that generates a string of HTML to be loaded.  The
 // string includes the HTML and the javascript code necessary to generate the
 // full page with support for JsTemplates.
 std::string GetTemplateHtml(const base::StringPiece& html_template,
                             const base::DictionaryValue* json,
                             const base::StringPiece& template_id);
 
 // A helper function that generates a string of HTML to be loaded.  The
 // string includes the HTML and the javascript code necessary to generate the
 // full page with support for i18n Templates.
@@ skipping 10 matching lines @@
 // The following functions build up the different parts that the above
 // templates use.
 
 // 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);
 
 // Same as AppendJsonHtml(), except does not include the <script></script>
 // tag wrappers.
 void AppendJsonJS(const base::DictionaryValue* json, std::string* output);
-// Same as above, but uses a slightly different format which should some day
-// become the default.
-void AppendJsonJS2(const base::DictionaryValue* json, std::string* output);
 
 // Appends the source for JsTemplates in a script tag.
 void AppendJsTemplateSourceHtml(std::string* output);
 
 // Appends the code that processes the JsTemplate with the JSON. You should
 // call AppendJsTemplateSourceHtml and AppendJsonHtml before calling this.
 void AppendJsTemplateProcessHtml(const base::StringPiece& template_id,
                                  std::string* output);
 
 // Appends the source for i18n Templates in a script tag.
 void AppendI18nTemplateSourceHtml(std::string* output);
 
 // Appends the code that processes the i18n Template with the JSON. You
 // should call AppendJsTemplateSourceHtml and AppendJsonHtml before calling
 // this.
 void AppendI18nTemplateProcessHtml(std::string* output);
 
 }  // namespace jstemplate_builder
 #endif  // CHROME_COMMON_JSTEMPLATE_BUILDER_H_