Work in progress: Adds MessagePumpDispatcher::ShouldExit(). This is used to handle the

ui/aura/monitor_change_observer_x11.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 "ui/aura/monitor_change_observer_x11.h"
 
 #include <algorithm>
 #include <map>
 #include <set>
 #include <vector>
@@ skipping 44 matching lines @@
       WindowDispatcherDestroying(x_root_window_);
 }
 
 bool MonitorChangeObserverX11::Dispatch(const base::NativeEvent& event) {
   if (event->type - xrandr_event_base_ == RRScreenChangeNotify) {
     NotifyMonitorChange();
   }
   return true;
 }
 
+bool MonitorChangeObserverX11::ShouldExit() {
+  return false;
+}
+
 void MonitorChangeObserverX11::NotifyMonitorChange() {
   if (!MonitorManager::use_fullscreen_host_window())
     return;  // Use the default monitor that monitor manager determined.
 
   XRRScreenResources* screen_resources =
       XRRGetScreenResources(xdisplay_, x_root_window_);
   std::map<XID, XRRCrtcInfo*> crtc_info_map;
 
   for (int c = 0; c < screen_resources->ncrtc; c++) {
     XID crtc_id = screen_resources->crtcs[c];
@@ skipping 41 matching lines @@
   // PowerManager lays out the outputs vertically. Sort them by Y
   // coordinates.
   std::sort(monitors.begin(), monitors.end(), CompareMonitorY);
   Env::GetInstance()->monitor_manager()
       ->OnNativeMonitorsChanged(monitors);
   STLDeleteContainerPointers(monitors.begin(), monitors.end());
 }
 
 }  // namespace internal
 }  // namespace aura