[gnome-system-monitor] Define a helper NonCopyable base class.

[Robert Roth <robertroth src gnome org>]

commit 65cf01faef9a2a8682387751509a7d56051c16e4
Author: Benoît Dejean <bdejean gmail com>
Date:   Wed Apr 23 12:30:56 2014 +0200

    Define a helper NonCopyable base class.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=742070

 src/util.h |   11 +++++++++++
 1 files changed, 11 insertions(+), 0 deletions(-)
---
diff --git a/src/util.h b/src/util.h
index 6d32808..4c6c8bb 100644
--- a/src/util.h
+++ b/src/util.h
@@ -127,6 +127,17 @@ namespace procman
 
     std::string format_network(guint64 rate, guint64 max_rate = 0);
     std::string format_network_rate(guint64 rate, guint64 max_rate = 0);
+
+    class NonCopyable
+    {
+    protected:
+        NonCopyable() {}  // = default
+        ~NonCopyable() {} // = default
+    private:
+        NonCopyable(const NonCopyable&)            /* = delete */;
+        NonCopyable& operator=(const NonCopyable&) /* = delete */;
+    };
+
 }
 
 #endif /* _GSM_UTIL_H_ */