Introduce Promise mapping to the IDL generator

Source/bindings/scripts/code_generator_v8.py

 # Copyright (C) 2013 Google Inc. All rights reserved.
 #
 # Redistribution and use in source and binary forms, with or without
 # modification, are permitted provided that the following conditions are
 # met:
 #
 #     * Redistributions of source code must retain the above copyright
 # notice, this list of conditions and the following disclaimer.
 #     * Redistributions in binary form must reproduce the above
 # copyright notice, this list of conditions and the following disclaimer
@@ skipping 66 matching lines @@
 CPP_TYPE_SPECIAL_CONVERSION_RULES = {
     'float': 'float',
     'double': 'double',
     'long long': 'long long',
     'unsigned long long': 'unsigned long long',
     'long': 'int',
     'short': 'int',
     'byte': 'int',
     'boolean': 'bool',
     'DOMString': 'const String&',
+    'Promise': 'ScriptPromise',
 }
 CPP_UNSIGNED_TYPES = set([
     'octet',
     'unsigned int',
     'unsigned long',
     'unsigned short',
 ])
+# Promise is not yet in the Web IDL spec but is going to be speced
+# as primitive types in the future.
 PRIMITIVE_TYPES = set([
     'boolean',
     'void',
     'Date',
+    'Promise',
     'byte',
     'octet',
     'short',
     'long',
     'long long',
     'unsigned short',
     'unsigned long',
     'unsigned long long',
     'float',
     'double',
@@ skipping 96 matching lines @@
     for acronym in ACRONYMS:
         if name.startswith(acronym):
             name.replace(acronym, acronym.lower())
             return name
     return name[0].lower() + name[1:]
 
 
 def includes_for_type(data_type):
     if primitive_type(data_type) or data_type == 'DOMString':
         return set()
+    if data_type == 'Promise':
+        return set(['ScriptPromise.h'])
     if array_or_sequence_type(data_type):
         return includes_for_type(array_or_sequence_type(data_type))
     return set(['V8%s.h' % data_type])
 
 
 def includes_for_cpp_class(class_name, relative_dir_posix):
     return set([posixpath.join(relative_dir_posix, class_name + '.h')])
 
 
 def includes_for_operation(operation):
@@ skipping 211 matching lines @@
 
         methods = [generate_method(operation) for operation in self.interface.operations]
         template_contents = {
             'cpp_class_name': self.interface.name,
             'v8_class_name': v8_class_name(self.interface),
             'cpp_includes': sorted(list(self.cpp_includes)),
             'header_includes': sorted(list(self.header_includes)),
             'methods': methods,
         }
         return template_contents