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

examples/embedded_app/embedded_app.cc

 // Copyright 2014 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/logging.h"
 #include "base/macros.h"
 #include "base/message_loop/message_loop.h"
 #include "base/strings/string_number_conversions.h"
 #include "examples/bitmap_uploader/bitmap_uploader.h"
@@ skipping 68 matching lines @@
   void OnViewManagerDisconnected(ViewManager* view_manager) override {
     base::MessageLoop::current()->Quit();
   }
 
   // Overridden from ViewObserver:
   void OnViewDestroyed(View* view) override {
     DCHECK(windows_.find(view->id()) != windows_.end());
     windows_.erase(view->id());
   }
   void OnViewInputEvent(View* view, const EventPtr& event) override {
-    if (event->action == EVENT_TYPE_POINTER_UP &&
+    if (event->action == EventType::POINTER_UP &&
         (static_cast<uint32_t>(event->flags) &
-         static_cast<uint32_t>(EVENT_FLAGS_LEFT_MOUSE_BUTTON))) {
+         static_cast<uint32_t>(EventFlags::LEFT_MOUSE_BUTTON))) {
       URLRequestPtr request(URLRequest::New());
       request->url = "http://www.aaronboodman.com/z_dropbox/test.html";
       NavigatorHostPtr navigator_host;
       ConnectToService(windows_[view->id()]->embedder_service_provider.get(),
                        &navigator_host);
-      navigator_host->RequestNavigate(TARGET_SOURCE_NODE, request.Pass());
+      navigator_host->RequestNavigate(Target::SOURCE_NODE, request.Pass());
     }
   }
 
   Shell* shell_;
   scoped_ptr<ViewManagerClientFactory> view_manager_client_factory_;
 
   typedef std::map<Id, Window*> WindowMap;
   WindowMap windows_;
 
   int next_color_;
 
   DISALLOW_COPY_AND_ASSIGN(EmbeddedApp);
 };
 
 }  // namespace examples
 }  // namespace mojo
 
 MojoResult MojoMain(MojoHandle application_request) {
   mojo::ApplicationRunnerChromium runner(new mojo::examples::EmbeddedApp);
   return runner.Run(application_request);
 }