wayland: define base:NativeEvent for Wayland

base/message_pump_wayland.h

 // Copyright (c) 2011 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 BASE_MESSAGE_PUMP_WAYLAND_H_
 #define BASE_MESSAGE_PUMP_WAYLAND_H_
 #pragma once
 
 #include "base/memory/scoped_ptr.h"
 #include "base/message_pump_glib.h"
 
 typedef struct _GMainContext GMainContext;
 typedef struct _GPollFD GPollFD;
 typedef struct _GSource GSource;
 
-namespace ui {
+namespace base {
+
+namespace wayland {
 union WaylandEvent;
-}  // namespace ui
-
-namespace base {
+}
 
 // The documentation for this class is in message_pump_glib.h
 class BASE_EXPORT MessagePumpObserver {
  public:
    enum EventStatus {
      EVENT_CONTINUE,    // The event should be dispatched as normal.
      EVENT_HANDLED      // The event should not be processed any farther.
    };
 
   // This method is called before processing an Event. If the method returns
   // EVENT_HANDLED, it indicates the event has already been handled, so the
   // event is not processed any farther. If the method returns EVENT_CONTINUE,
   // the event dispatching proceeds as normal.
-  virtual EventStatus WillProcessEvent(ui::WaylandEvent* event);
+  virtual EventStatus WillProcessEvent(wayland::WaylandEvent* event);
 
  protected:
   virtual ~MessagePumpObserver() {}
 };
 
 // The documentation for this class is in message_pump_glib.h
 //
 // The nested loop is exited by either posting a quit, or returning false
 // from Dispatch.
 class MessagePumpDispatcher {
  public:
   enum DispatchStatus {
     EVENT_IGNORED,    // The event was not processed.
     EVENT_PROCESSED,  // The event has been processed.
     EVENT_QUIT        // The event was processed and the message-loop should
                       // terminate.
   };
 
   // Dispatches the event. If true is returned processing continues as
   // normal. If false is returned, the nested loop exits immediately.
-  virtual DispatchStatus Dispatch(ui::WaylandEvent* event) = 0;
+  virtual DispatchStatus Dispatch(wayland::WaylandEvent* event) = 0;
 
  protected:
   virtual ~MessagePumpDispatcher() {}
 };
 
 class BASE_EXPORT MessagePumpWayland : public MessagePumpGlib {
 
  public:
   MessagePumpWayland();
   virtual ~MessagePumpWayland();
 
   // Overridden from MessagePumpGlib
   virtual bool RunOnce(GMainContext* context, bool block) OVERRIDE;
  private:
 
   // This is a GLib structure that we can add event sources to.
   GMainContext* context_;
 
   DISALLOW_COPY_AND_ASSIGN(MessagePumpWayland);
 };
 
 typedef MessagePumpWayland MessagePumpForUI;
 
 }  // namespace base
 
 #endif  // BASE_MESSAGE_PUMP_WAYLAND_H_