PlatformEventDispatcher::DispatchEvent() should return a PostDispatchAction

ui/views/widget/desktop_aura/desktop_screen_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/views/widget/desktop_aura/desktop_screen_x11.h"
 
 #include <X11/extensions/Xrandr.h>
 #include <X11/Xlib.h>
 
 // It clashes with out RootWindow.
@@ skipping 207 matching lines @@
 
 void DesktopScreenX11::RemoveObserver(gfx::DisplayObserver* observer) {
   change_notifier_.RemoveObserver(observer);
 }
 
 bool DesktopScreenX11::CanDispatchEvent(const ui::PlatformEvent& event) {
   return event->type - xrandr_event_base_ == RRScreenChangeNotify ||
          event->type - xrandr_event_base_ == RRNotify;
 }
 
-uint32_t DesktopScreenX11::DispatchEvent(const ui::PlatformEvent& event) {
+ui::PostDispatchAction DesktopScreenX11::DispatchEvent(
+    const ui::PlatformEvent& event) {
   if (event->type - xrandr_event_base_ == RRScreenChangeNotify) {
     // Pass the event through to xlib.
     XRRUpdateConfiguration(event);
   } else if (event->type - xrandr_event_base_ == RRNotify) {
     // There's some sort of observer dispatch going on here, but I don't think
     // it's the screen's?
     if (configure_timer_.get() && configure_timer_->IsRunning()) {
       configure_timer_->Reset();
     } else {
       configure_timer_.reset(new base::OneShotTimer<DesktopScreenX11>());
@@ skipping 123 matching lines @@
   change_notifier_.NotifyDisplaysChanged(old_displays, displays_);
 }
 
 ////////////////////////////////////////////////////////////////////////////////
 
 gfx::Screen* CreateDesktopScreen() {
   return new DesktopScreenX11;
 }
 
 }  // namespace views