Change AckEvent into request / response

mojo/examples/view_manager/view_manager.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 <stdio.h>
 
 #include "base/logging.h"
 #include "base/macros.h"
 #include "base/memory/scoped_vector.h"
 #include "base/message_loop/message_loop.h"
@@ skipping 64 matching lines @@
 
   // Overridden from NativeViewportClient:
   virtual void OnCreated() OVERRIDE {
   }
   virtual void OnDestroyed() OVERRIDE {
     base::MessageLoop::current()->Quit();
   }
   virtual void OnBoundsChanged(const Rect& bounds) OVERRIDE {
     // TODO(beng):
   }
-  virtual void OnEvent(const Event& event) OVERRIDE {
-    if (!event.location().is_null())
-      native_viewport_->AckEvent(event);
+  virtual void OnEvent(const Event& event,
+                       const mojo::Callback<void()>& callback) OVERRIDE {
     if (event.action() == ui::ET_KEY_RELEASED) {
       if (event.key_data().key_code() == ui::VKEY_L &&
           (event.flags() & ui::EF_CONTROL_DOWN)) {
         InitLauncher();
         launcher_->Show();
       }
     }
+    callback.Run();
   }
 
   // Overridden from LauncherClient:
   virtual void OnURLEntered(const mojo::String& url) OVERRIDE {
     std::string url_spec = url.To<std::string>();
     printf("Received URL from launcher app: %s\n", url_spec.c_str());
     launcher_->Hide();
   }
 
   void InitNativeViewport() {
@@ skipping 36 matching lines @@
 extern "C" VIEW_MANAGER_EXPORT MojoResult CDECL MojoMain(
     MojoHandle shell_handle) {
   base::MessageLoop loop;
   mojo::Application app(shell_handle);
   app.AddServiceFactory(
       new mojo::ServiceFactory<mojo::examples::ViewManagerImpl>);
   loop.Run();
 
   return MOJO_RESULT_OK;
 }