For c++, Generate enum classes instead of enum from mojom.

services/http_server/http_server_apptest.cc

 // Copyright 2015 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.
 
 #include "base/bind.h"
 #include "base/run_loop.h"
 #include "base/strings/stringprintf.h"
 #include "mojo/data_pipe_utils/data_pipe_utils.h"
 #include "mojo/public/cpp/application/application_impl.h"
 #include "mojo/public/cpp/application/application_test_base.h"
@@ skipping 97 matching lines @@
   http_server::HttpServerFactoryPtr http_server_factory_;
   mojo::NetworkServicePtr network_service_;
 
  private:
   MOJO_DISALLOW_COPY_AND_ASSIGN(HttpServerApplicationTest);
 };
 
 http_server::HttpServerPtr HttpServerApplicationTest::CreateHttpServer() {
   http_server::HttpServerPtr http_server;
   mojo::NetAddressPtr local_address(mojo::NetAddress::New());
-  local_address->family = mojo::NET_ADDRESS_FAMILY_IPV4;
+  local_address->family = mojo::NetAddressFamily::IPV4;
   local_address->ipv4 = mojo::NetAddressIPv4::New();
   local_address->ipv4->addr.resize(4);
   local_address->ipv4->addr[0] = 127;
   local_address->ipv4->addr[1] = 0;
   local_address->ipv4->addr[2] = 0;
   local_address->ipv4->addr[3] = 1;
   local_address->ipv4->port = 0;
   http_server_factory_->CreateHttpServer(GetProxy(&http_server).Pass(),
                                          local_address.Pass());
   return http_server.Pass();
@@ skipping 59 matching lines @@
   url_request->method = "POST";
   url_request->body.resize(1);
   WriteMessageToDataPipe(kExampleMessage, &url_request->body[0]);
 
   url_loader->Start(url_request.Pass(), base::Bind(&CheckServerResponse));
   base::RunLoop run_loop;
   run_loop.Run();
 }
 
 }  // namespace http_server