aura: Fix unit_tests on linux

base/message_pump_win.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_WIN_H_
 #define BASE_MESSAGE_PUMP_WIN_H_
 #pragma once
 
 #include <windows.h>
 
@@ skipping 25 matching lines @@
   // from Dispatch.
   class BASE_EXPORT Dispatcher {
    public:
     virtual ~Dispatcher() {}
     // Dispatches the event. If true is returned processing continues as
     // normal. If false is returned, the nested loop exits immediately.
     virtual bool Dispatch(const MSG& msg) = 0;
   };
 
   MessagePumpWin() : have_work_(0), state_(NULL) {}
-  virtual ~MessagePumpWin() {}
+  virtual ~MessagePumpWin();
 
   // Add an Observer, which will start receiving notifications immediately.
   void AddObserver(MessagePumpObserver* observer);
 
   // Remove an Observer.  It is safe to call this method while an Observer is
   // receiving a notification callback.
   void RemoveObserver(MessagePumpObserver* observer);
 
   // Give a chance to code processing additional messages to notify the
   // message loop observers that another message has been processed.
@@ skipping 288 matching lines @@
   // This list will be empty almost always. It stores IO completions that have
   // not been delivered yet because somebody was doing cleanup.
   std::list<IOItem> completed_io_;
 
   ObserverList<IOObserver> io_observers_;
 };
 
 }  // namespace base
 
 #endif  // BASE_MESSAGE_PUMP_WIN_H_