Add the boilerplate for actions to File System Provider API.

tools/json_schema_compiler/cc_generator.py

 # 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.
 
 from code import Code
 from model import PropertyType
 import cpp_util
 import schema_util
 import util_cc_helper
 from cpp_namespace_environment import CppNamespaceEnvironment
@@ skipping 402 matching lines @@
 
   def _GenerateChoiceTypeToValue(self, cpp_namespace, type_):
     """Generates a function that serializes a choice-representing type
     into a base::Value.
     """
     c = Code()
     c.Sblock('scoped_ptr<base::Value> %s::ToValue() const {' % cpp_namespace)
     c.Append('scoped_ptr<base::Value> result;')
     for choice in type_.choices:
       choice_var = 'as_%s' % choice.unix_name
+      # Enums cannot be wrapped with scoped_ptr, but the XXX_NONE enum value
+      # is equal to 0.
       (c.Sblock('if (%s) {' % choice_var)
           .Append('DCHECK(!result) << "Cannot set multiple choices for %s";' %
                       type_.unix_name)
           .Cblock(self._CreateValueFromType('result.reset(%s);',
                                             choice.name,
                                             choice,
-                                            '*%s' % choice_var))
+                                            choice_var,
+                                            True))
         .Eblock('}')
       )
     (c.Append('DCHECK(result) << "Must set at least one choice for %s";' %
                   type_.unix_name)
       .Append('return result.Pass();')
       .Eblock('}')
     )
     return c
 
   def _GenerateFunction(self, function):
@@ skipping 630 matching lines @@
     if self._generate_error_messages:
       params = list(params) + ['base::string16* error']
     return ', '.join(str(p) for p in params)
 
   def _GenerateArgs(self, args):
     """Builds the argument list for a function, given an array of arguments.
     """
     if self._generate_error_messages:
       args = list(args) + ['error']
     return ', '.join(str(a) for a in args)