Reland: Mojo: add javascript bindings for request/response

mojo/public/bindings/pylib/generate/mojom_generator.py

 # Copyright 2013 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.
 
 """Code shared by the various language-specific code generators."""
 
 import os
 import mojom
 import mojom_pack
 import re
@@ skipping 63 matching lines @@
   # files to stdout.
   def __init__(self, module, output_dir=None):
     self.module = module
     self.output_dir = output_dir
 
   def GetStructsFromMethods(self):
     result = []
     for interface in self.module.interfaces:
       for method in interface.methods:
         result.append(GetStructFromMethod(interface, method))
+        if method.response_parameters != None:
+          result.append(GetResponseStructFromMethod(interface, method))
     return map(partial(GetStructInfo, False), result)
 
   def GetStructs(self):
     return map(partial(GetStructInfo, True), self.module.structs)
 
   def Write(self, contents, filename):
     if self.output_dir is None:
       print contents
       return
     with open(os.path.join(self.output_dir, filename), "w+") as f:
       f.write(contents)
 
   def GenerateFiles(self):
     raise NotImplementedError("Subclasses must override/implement this method")