[mojo] Ports EDK

mojo/edk/system/ports/port_ref.h

Index: mojo/edk/system/ports/port_ref.h
diff --git a/mojo/edk/system/ports/port_ref.h b/mojo/edk/system/ports/port_ref.h
new file mode 100644
index 0000000000000000000000000000000000000000..9af4a8de1d710bb9423bc4eb86d17e8715b75807
--- /dev/null
+++ b/mojo/edk/system/ports/port_ref.h
@@ -0,0 +1,41 @@
+// Copyright 2016 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_EDK_SYSTEM_PORTS_PORT_REF_H_
+#define MOJO_EDK_SYSTEM_PORTS_PORT_REF_H_
+
+#include "base/memory/ref_counted.h"
+#include "mojo/edk/system/ports/name.h"
+
+namespace mojo {
+namespace edk {
+namespace ports {
+
+class Port;
+class Node;
+
+class PortRef {
+ public:
+  ~PortRef();
+  PortRef();
+  PortRef(const PortName& name, const scoped_refptr<Port>& port);
+
+  PortRef(const PortRef& other);
+  PortRef& operator=(const PortRef& other);
+
+  const PortName& name() const { return name_; }
+
+ private:
+  friend class Node;
+  Port* port() const { return port_.get(); }
+
+  PortName name_;
+  scoped_refptr<Port> port_;
+};
+
+}  // namespace ports
+}  // namespace edk
+}  // namespace mojo
+
+#endif  // MOJO_EDK_SYSTEM_PORTS_PORT_REF_H_