Mojo: more idiomatic C++ bindings

mojo/public/cpp/shell/application.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_SHELL_APPLICATION_H_
 #define MOJO_PUBLIC_SHELL_APPLICATION_H_
 
 #include <vector>
 
 #include "mojo/public/cpp/shell/connect.h"
@@ skipping 54 matching lines @@
 
   template <typename Interface>
   void ConnectTo(const std::string& url, InterfacePtr<Interface>* ptr) {
     mojo::ConnectTo(shell(), url, ptr);
   }
 
  protected:
   // ShellClient methods.
   // Override this to dispatch to correct service when there's more than one.
   // TODO(davemoore): Augment this with name registration.
-  virtual void AcceptConnection(const mojo::String& url,
+  virtual void AcceptConnection(mojo::String url,
                                 ScopedMessagePipeHandle client_handle)
       MOJO_OVERRIDE;
 
  private:
   // internal::ServiceConnectorBase::Owner methods.
   // Takes ownership of |service_connector|.
   virtual void AddServiceConnector(
       internal::ServiceConnectorBase* service_connector) MOJO_OVERRIDE;
   virtual void RemoveServiceConnector(
       internal::ServiceConnectorBase* service_connector) MOJO_OVERRIDE;
 
   typedef std::vector<internal::ServiceConnectorBase*> ServiceConnectorList;
   ServiceConnectorList service_connectors_;
 };
 
 }  // namespace mojo
 
 #endif  // MOJO_PUBLIC_SHELL_APPLICATION_H_