Implementation of MessagePump for Mojo.

mojo/common/message_pump_mojo_handler.h

Index: mojo/common/message_pump_mojo_handler.h
diff --git a/mojo/common/message_pump_mojo_handler.h b/mojo/common/message_pump_mojo_handler.h
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+// Copyright 2013 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_COMMON_MESSAGE_PUMP_MOJO_HANDLER_H_
+#define MOJO_COMMON_MESSAGE_PUMP_MOJO_HANDLER_H_
+
+#include "mojo/common/mojo_common_export.h"
+#include "mojo/public/system/core.h"
+
+namespace mojo {
+namespace common {
+
+// Used by MessagePumpMojo to notify when a handle is either ready or has become
+// invalid.
+class MOJO_COMMON_EXPORT MessagePumpMojoHandler {
+ public:
+  virtual void OnHandleReady(MojoHandle handle) = 0;
+
+  virtual void OnHandleError(MojoHandle handle, MojoResult result) = 0;
+
+ protected:
+  virtual ~MessagePumpMojoHandler() {}
+};
+
+}  // namespace common
+}  // namespace mojo
+
+#endif  // MOJO_COMMON_MESSAGE_PUMP_MOJO_HANDLER_H_