Embed a simple Mojo shell in content

content/public/common/service_registry.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 CONTENT_PUBLIC_COMMON_SERVICE_REGISTRY_H_
 #define CONTENT_PUBLIC_COMMON_SERVICE_REGISTRY_H_
 
 #include <string>
 
 #include "base/bind.h"
@@ skipping 33 matching lines @@
           service_factory) = 0;
 
   // Remove future access to the service implementing Interface. Existing
   // connections to the service are unaffected.
   template <typename Interface>
   void RemoveService() {
     RemoveService(Interface::Name_);
   }
   virtual void RemoveService(const std::string& service_name) = 0;
 
-  // Connect to an interface provided by the remote service provider.
+  // Connect to an interface provided by the remote service provider. Creates a
+  // new message pipe for this connection.
   template <typename Interface>
   void ConnectToRemoteService(mojo::InterfacePtr<Interface>* ptr) {
     mojo::MessagePipe pipe;
     ptr->Bind(pipe.handle0.Pass());
     ConnectToRemoteService(Interface::Name_, pipe.handle1.Pass());
   }
+
+  // Connect to an interface provided by the remote service provider, using an
+  // existing message pipe.
+  template <typename Interface>
+  void ConnectToRemoteService(mojo::InterfaceRequest<Interface> request) {
+    ConnectToRemoteService(Interface::Name_, request.PassMessagePipe());
+  }
+
   virtual void ConnectToRemoteService(const base::StringPiece& name,
                                       mojo::ScopedMessagePipeHandle handle) = 0;
 
  private:
   template <typename Interface>
   static void ForwardToServiceFactory(
       const base::Callback<void(mojo::InterfaceRequest<Interface>)>
           service_factory,
       mojo::ScopedMessagePipeHandle handle) {
     service_factory.Run(mojo::MakeRequest<Interface>(handle.Pass()));
   }
 };
 
 }  // namespace content
 
 #endif  // CONTENT_PUBLIC_COMMON_SERVICE_REGISTRY_H_