Mojo C++ bindings: Generate InterfaceHandle<> instead of InterfacePtr<>.

mojo/public/cpp/application/connect.h

 // 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.
 
 #ifndef MOJO_PUBLIC_CPP_APPLICATION_CONNECT_H_
 #define MOJO_PUBLIC_CPP_APPLICATION_CONNECT_H_
 
 #include "mojo/public/interfaces/application/application_connector.mojom.h"
 #include "mojo/public/interfaces/application/service_provider.mojom.h"
 #include "mojo/public/interfaces/application/shell.mojom.h"
 
 namespace mojo {
 
 // Binds |ptr| to a remote implementation of Interface from |service_provider|.
 template <typename Interface>
 inline void ConnectToService(ServiceProvider* service_provider,

[viettrungluu, 2016/02/10 01:04:08]

What I said about GetProxy applies to the various ConnectToService()s too (maybe
there should be overloads?).

[vardhan, 2016/02/11 22:47:53]

longer term, should we completely replace these InterfacePtr with
InterfaceHandle when calling ConnectToService()? and let mojo apps convert
InterfaceHandle<> to InterfacePtr<> instead?

I'll add the overloads for now, but I don't think I want to track down consumers
of ConnectToService() in this CL and convert them.. there are a lot of
consumers, so I'll add a TODO here instead.

                              InterfacePtr<Interface>* ptr) {
   MessagePipe pipe;
   ptr->Bind(InterfaceHandle<Interface>(pipe.handle0.Pass(), 0u));
   service_provider->ConnectToService(Interface::Name_, pipe.handle1.Pass());
 }
 
 // Binds |ptr| to a remote implementation of Interface from |application_url|.
 template <typename Interface>
 inline void ConnectToService(Shell* shell,
                              const std::string& application_url,
                              InterfacePtr<Interface>* ptr) {
   ServiceProviderPtr service_provider;
-  shell->ConnectToApplication(application_url,
-                              GetProxy(&service_provider), nullptr);
+  shell->ConnectToApplication(application_url, GetProxy(&service_provider),
+                              InterfaceHandle<ServiceProvider>());
   ConnectToService(service_provider.get(), ptr);
 }
 
 // Binds |ptr| to a remote implementation of Interface from |application_url|.
 template <typename Interface>
 inline void ConnectToService(ApplicationConnector* application_connector,
                              const std::string& application_url,
                              InterfacePtr<Interface>* ptr) {
   ServiceProviderPtr service_provider;
   application_connector->ConnectToApplication(
-      application_url, GetProxy(&service_provider), nullptr);
+      application_url, GetProxy(&service_provider),
+      InterfaceHandle<ServiceProvider>());
   ConnectToService(service_provider.get(), ptr);
 }
 
 }  // namespace mojo
 
 #endif  // MOJO_PUBLIC_CPP_APPLICATION_CONNECT_H_