x11: Remove MessagePumpObserver.

base/message_loop/message_pump_x11.h

Index: base/message_loop/message_pump_x11.h
diff --git a/base/message_loop/message_pump_x11.h b/base/message_loop/message_pump_x11.h
index ee20672e1eb3c646c25e6bcc4079b74e4da058fd..5fdfeeae663605ba0fc2eb8c24b66adeeda841f0 100644
--- a/base/message_loop/message_pump_x11.h
+++ b/base/message_loop/message_pump_x11.h
@@ -10,27 +10,14 @@
 
 #include "base/memory/scoped_ptr.h"
 #include "base/message_loop/message_pump.h"
-#include "base/message_loop/message_pump_dispatcher.h"
 #include "base/message_loop/message_pump_glib.h"
-#include "base/message_loop/message_pump_observer.h"
 #include "base/observer_list.h"
 
-// It would be nice to include the X11 headers here so that we use Window
-// instead of its typedef of unsigned long, but we can't because everything in
-// chrome includes us through base/message_loop/message_loop.h, and X11's crappy
-// #define heavy headers muck up half of chrome.
-
-typedef struct _GPollFD GPollFD;
-typedef struct _GSource GSource;
 typedef struct _XDisplay Display;
 
 namespace base {
 
 // This class implements a message-pump for dispatching X events.
-//
-// If there's a current dispatcher given through RunWithDispatcher(), that
-// dispatcher receives events. Otherwise, we route to messages to dispatchers
-// who have subscribed to messages from a specific X11 window.
 class BASE_EXPORT MessagePumpX11 : public MessagePumpGlib {
  public:
   MessagePumpX11();
@@ -42,21 +29,7 @@ class BASE_EXPORT MessagePumpX11 : public MessagePumpGlib {
   // Returns the UI or GPU message pump.
   static MessagePumpX11* Current();
 
-  // 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);
-
-  // Sends the event to the observers.
-  void WillProcessXEvent(XEvent* xevent);
-  void DidProcessXEvent(XEvent* xevent);
-
  private:
-  // List of observers.
-  ObserverList<MessagePumpObserver> observers_;
-
   DISALLOW_COPY_AND_ASSIGN(MessagePumpX11);
 };