Move aura shared and desktop classes to the views target. Note that the files don't actually move, …

ui/aura/client/activation_change_observer.h

 // 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.
 
 #ifndef UI_AURA_CLIENT_ACTIVATION_CHANGE_OBSERVER_H_
 #define UI_AURA_CLIENT_ACTIVATION_CHANGE_OBSERVER_H_
 
 #include "ui/aura/aura_export.h"
 
 namespace aura {
 class Window;
 
 namespace client {
 
 class AURA_EXPORT ActivationChangeObserver {
  public:
   // Called when |active| gains focus, or there is no active window
   // (|active| is NULL in this case.) |old_active| refers to the
   // previous active window or NULL if there was no previously active
   // window.
   virtual void OnWindowActivated(Window* active, Window* old_active) = 0;
 
  protected:
-  virtual ~ActivationChangeObserver() {}
+  ActivationChangeObserver();
+  virtual ~ActivationChangeObserver();
 };
 
 }  // namespace client
 }  // namespace aura
 
 #endif  // UI_AURA_CLIENT_ACTIVATION_CHANGE_OBSERVER_H_