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

mojo/public/cpp/application/connect.h

Index: mojo/public/cpp/application/connect.h
diff --git a/mojo/public/cpp/application/connect.h b/mojo/public/cpp/application/connect.h
index 06b79e7e4e0cf0e085024bc759774d1b848d73ad..16efc2d98b5f8b761a923c1e4e747c8d310c4dc8 100644
--- a/mojo/public/cpp/application/connect.h
+++ b/mojo/public/cpp/application/connect.h
@@ -11,6 +11,10 @@
 
 namespace mojo {
 
+// TODO(vardhan): Replaces uses of ConnectToService(.., InterfacePtr<>) with the
+// ConnectToService(.., InterfaceHandle<>) alternative instead, and get
+// rid of following 3 functions.
+
 // Binds |ptr| to a remote implementation of Interface from |service_provider|.
 template <typename Interface>
 inline void ConnectToService(ServiceProvider* service_provider,
@@ -26,8 +30,8 @@ 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),
+                              nullptr);
   ConnectToService(service_provider.get(), ptr);
 }
 
@@ -42,6 +46,37 @@ inline void ConnectToService(ApplicationConnector* application_connector,
   ConnectToService(service_provider.get(), ptr);
 }
 
+// Binds |ptr| to a remote implementation of Interface from |service_provider|.
+template <typename Interface>
+inline void ConnectToService(ServiceProvider* service_provider,
+                             InterfaceHandle<Interface>* ptr) {
+  MessagePipe pipe;
+  *ptr = 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,
+                             InterfaceHandle<Interface>* ptr) {
+  ServiceProviderPtr service_provider;
+  shell->ConnectToApplication(application_url, GetProxy(&service_provider),
+                              nullptr);
+  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,
+                             InterfaceHandle<Interface>* ptr) {
+  ServiceProviderPtr service_provider;
+  application_connector->ConnectToApplication(
+      application_url, GetProxy(&service_provider), nullptr);
+  ConnectToService(service_provider.get(), ptr);
+}
+
 }  // namespace mojo
 
 #endif  // MOJO_PUBLIC_CPP_APPLICATION_CONNECT_H_