gtk: Some code cleanup for the message-pump.

base/message_loop/message_pump_aurax11.cc

 // Copyright (c) 2012 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.
 
 #include "base/message_loop/message_pump_aurax11.h"
 
 #include <glib.h>
 #include <X11/X.h>
 #include <X11/extensions/XInput2.h>
 #include <X11/XKBlib.h>
@@ skipping 166 matching lines @@
 void MessagePumpAuraX11::AddDispatcherForRootWindow(
     MessagePumpDispatcher* dispatcher) {
   root_window_dispatchers_.AddObserver(dispatcher);
 }
 
 void MessagePumpAuraX11::RemoveDispatcherForRootWindow(
     MessagePumpDispatcher* dispatcher) {
   root_window_dispatchers_.RemoveObserver(dispatcher);
 }
 
+void MessagePumpAuraX11::AddObserver(MessagePumpObserver* observer) {
+  observers_.AddObserver(observer);
+}
+
+void MessagePumpAuraX11::RemoveObserver(MessagePumpObserver* observer) {
+  observers_.RemoveObserver(observer);
+}
+
 bool MessagePumpAuraX11::DispatchXEvents() {
   Display* display = GetDefaultXDisplay();
   DCHECK(display);
   MessagePumpDispatcher* dispatcher =
       GetDispatcher() ? GetDispatcher() : this;
 
   // In the general case, we want to handle all pending events before running
   // the tasks. This is what happens in the message_pump_glib case.
   while (XPending(display)) {
     XEvent xev;
@@ skipping 101 matching lines @@
   if (FindEventTarget(xev) == x_root_window_) {
     FOR_EACH_OBSERVER(MessagePumpDispatcher, root_window_dispatchers_,
                       Dispatch(xev));
     return true;
   }
   MessagePumpDispatcher* dispatcher = GetDispatcherForXEvent(xev);
   return dispatcher ? dispatcher->Dispatch(xev) : true;
 }
 
 }  // namespace base