RefCounted types should not have public destructors, Linux fixes

base/message_pump_gtk.h

Index: base/message_pump_gtk.h
diff --git a/base/message_pump_gtk.h b/base/message_pump_gtk.h
index ea1630f06f2659dd1baae6f05ea938dc4934708d..206c8e8cc98413924c26f32b48932a7995620f08 100644
--- a/base/message_pump_gtk.h
+++ b/base/message_pump_gtk.h
@@ -44,7 +44,6 @@ class MessagePumpDispatcher {
 class BASE_EXPORT MessagePumpGtk : public MessagePumpGlib {
  public:
   MessagePumpGtk();
-  virtual ~MessagePumpGtk();
 
   // Dispatch an available GdkEvent. Essentially this allows a subclass to do
   // some task before/after calling the default handler (EventDispatcher).
@@ -53,6 +52,9 @@ class BASE_EXPORT MessagePumpGtk : public MessagePumpGlib {
   // Returns default X Display.
   static Display* GetDefaultXDisplay();
 
+ protected:
+  virtual ~MessagePumpGtk();
+
  private:
   // Invoked from EventDispatcher. Notifies all observers we're about to
   // process an event.