Refer back to Jinja templates from the C++ code generated from IDL files.

third_party/WebKit/Source/bindings/scripts/code_generator_web_module.py

 # Copyright 2016 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.
 
 # pylint: disable=import-error,print-statement,relative-import
 
 """Generates Blink Web Module bindings.
 
 The Blink Web Module bindings provide a stable, IDL-generated interface for the
 Web Modules.
 
 The Web Modules are the high-level services like Autofill,
 Autocomplete, Translate, Distiller, Phishing Detector, and others. Web Modules
 typically want to introspec the document and rendering infromation to implement
 browser features.
 
 The bindings are meant to be as simple and as ephemeral as possible, mostly just
 wrapping existing DOM classes. Their primary goal is to avoid leaking the actual
 DOM classes to the Web Modules layer.
 """
 
 import os
 import posixpath
 
-from code_generator import CodeGeneratorBase
+from code_generator import CodeGeneratorBase, render_template
 # TODO(dglazkov): Move TypedefResolver to code_generator.py
 from code_generator_v8 import TypedefResolver
 
 MODULE_PYNAME = os.path.splitext(os.path.basename(__file__))[0] + '.py'
 
 WEB_MODULE_IDL_ATTRIBUTE = 'WebModuleAPI'
 
 
 def includes_for_type(idl_type):
     # TODO(dglazkov): Make this actually work.
@@ skipping 81 matching lines @@
     def generate_interface_code(self, interface):
         # TODO(dglazkov): Implement callback interfaces.
         # TODO(dglazkov): Make sure partial interfaces are handled.
         if interface.is_callback or interface.is_partial:
             raise ValueError('Partial or callback interfaces are not supported')
 
         template_context = interface_context(interface)
 
         cpp_template = self.get_template('cpp')
         header_template = self.get_template('h')
-        cpp_text = cpp_template.render(template_context)
-        header_text = header_template.render(template_context)
+        cpp_text = render_template(cpp_template, template_context)
+        header_text = render_template(header_template, template_context)
         header_path, cpp_path = self.output_paths(interface.name)
 
         return (
             (header_path, header_text),
             (cpp_path, cpp_text)
         )
 
     def generate_code(self, definitions, definition_name):
         self.typedef_resolver.resolve(definitions, definition_name)
         header_path, cpp_path = self.output_paths(definition_name)
 
         template_context = {}
         # TODO(dglazkov): Implement dictionaries
         if definition_name not in definitions.interfaces:
             return None
 
         interface = definitions.interfaces[definition_name]
         if WEB_MODULE_IDL_ATTRIBUTE not in interface.extended_attributes:
             return None
 
         return self.generate_interface_code(interface)