gtk: Some code cleanup for the message-pump.

base/message_loop/message_pump_glib.h

Index: base/message_loop/message_pump_glib.h
diff --git a/base/message_loop/message_pump_glib.h b/base/message_loop/message_pump_glib.h
index 33690d08586a667c6bfe999d3e7033ffc578badf..174bd051f5764dea5c8b26df6b12bce912dfb3c8 100644
--- a/base/message_loop/message_pump_glib.h
+++ b/base/message_loop/message_pump_glib.h
@@ -51,13 +51,6 @@ class BASE_EXPORT MessagePumpGlib : public MessagePump {
   bool HandleCheck();
   void HandleDispatch();
 
-  // Adds an Observer, which will start receiving notifications immediately.
-  void AddObserver(MessagePumpObserver* observer);
-
-  // Removes an Observer.  It is safe to call this method while an Observer is
-  // receiving a notification callback.
-  void RemoveObserver(MessagePumpObserver* observer);
-
   // Overridden from MessagePump:
   virtual void Run(Delegate* delegate) OVERRIDE;
   virtual void Quit() OVERRIDE;
@@ -68,8 +61,6 @@ class BASE_EXPORT MessagePumpGlib : public MessagePump {
   // Returns the dispatcher for the current run state (|state_->dispatcher|).
   MessagePumpDispatcher* GetDispatcher();
 
-  ObserverList<MessagePumpObserver>& observers() { return observers_; }
-
  private:
   // We may make recursive calls to Run, so we save state that needs to be
   // separate between them in this structure type.
@@ -98,9 +89,6 @@ class BASE_EXPORT MessagePumpGlib : public MessagePump {
   // Use a scoped_ptr to avoid needing the definition of GPollFD in the header.
   scoped_ptr<GPollFD> wakeup_gpollfd_;
 
-  // List of observers.
-  ObserverList<MessagePumpObserver> observers_;
-
   DISALLOW_COPY_AND_ASSIGN(MessagePumpGlib);
 };