PlatformEventDispatcher::DispatchEvent() should return a PostDispatchAction

ui/display/chromeos/x11/native_display_event_dispatcher_x11.h

 // Copyright 2014 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.
 
 #ifndef UI_DISPLAY_CHROMEOS_X11_NATIVE_DISPLAY_EVENT_DISPATCHER_X11_H_
 #define UI_DISPLAY_CHROMEOS_X11_NATIVE_DISPLAY_EVENT_DISPATCHER_X11_H_
 
 #include "base/time/tick_clock.h"
 #include "base/time/time.h"
 #include "ui/display/chromeos/x11/native_display_delegate_x11.h"
 #include "ui/events/platform/platform_event_dispatcher.h"
 
 namespace ui {
 
 // The implementation is interested in the cases of RRNotify events which
 // correspond to output add/remove events. Note that Output add/remove events
 // are sent in response to our own reconfiguration operations so spurious events
 // are common. Spurious events will have no effect.
 class DISPLAY_EXPORT NativeDisplayEventDispatcherX11
     : public ui::PlatformEventDispatcher {
  public:
   NativeDisplayEventDispatcherX11(
       NativeDisplayDelegateX11::HelperDelegate* delegate,
       int xrandr_event_base);
   virtual ~NativeDisplayEventDispatcherX11();
 
   // ui::PlatformEventDispatcher:
   virtual bool CanDispatchEvent(const PlatformEvent& event) override;
-  virtual uint32_t DispatchEvent(const PlatformEvent& event) override;
+  virtual ui::PostDispatchAction DispatchEvent(
+      const PlatformEvent& event) override;
 
   void SetTickClockForTest(scoped_ptr<base::TickClock> tick_clock);
 
   // How long the cached output is valid after startup.
   static const int kUseCacheAfterStartupMs;
 
  private:
   NativeDisplayDelegateX11::HelperDelegate* delegate_;  // Not owned.
 
   // The base of the event numbers used to represent XRandr events used in
   // decoding events regarding output add/remove.
   int xrandr_event_base_;
 
   base::TimeTicks startup_time_;
 
   scoped_ptr<base::TickClock> tick_clock_;
 
   DISALLOW_COPY_AND_ASSIGN(NativeDisplayEventDispatcherX11);
 };
 
 }  // namespace ui
 
 #endif  // UI_DISPLAY_CHROMEOS_X11_NATIVE_DISPLAY_EVENT_DISPATCHER_X11_H_