Shell related switches -> aura shell switches.

ui/aura/client/activation_client.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 UI_AURA_CLIENT_ACTIVATION_CLIENT_H_
 #define UI_AURA_CLIENT_ACTIVATION_CLIENT_H_
 #pragma once
 
 #include "ui/aura/aura_export.h"
 
 namespace aura {
 class Window;
 namespace client {
 
+// A property key to store a client that handles window activation. The type of
+// the value is |aura::client::ActivationClient*|.
+AURA_EXPORT extern const char kRootWindowActivationClient[];
+
+// A property key to store what the client defines as the active window on the
+// RootWindow. The type of the value is |aura::Window*|.
+AURA_EXPORT extern const char kRootWindowActiveWindow[];
+
 // An interface implemented by an object that manages window activation.
 class AURA_EXPORT ActivationClient {
  public:
   // Activates |window|. If |window| is NULL, nothing happens.
   virtual void ActivateWindow(Window* window) = 0;
 
   // Deactivates |window|. What (if anything) is activated next is up to the
   // client. If |window| is NULL, nothing happens.
   virtual void DeactivateWindow(Window* window) = 0;
 
   // Retrieves the active window, or NULL if there is none.
   virtual aura::Window* GetActiveWindow() = 0;
 
   // Returns true if |window| can be focused. To be focusable, |window| must
   // exist inside an activatable window.
   virtual bool CanFocusWindow(Window* window) const = 0;
 
  protected:
   virtual ~ActivationClient() {}
 };
 
 // Sets/Gets the activation client on the RootWindow.
 AURA_EXPORT void SetActivationClient(ActivationClient* client);
 AURA_EXPORT ActivationClient* GetActivationClient();
 
 }  // namespace clients
 }  // namespace aura
 
 #endif  // UI_AURA_CLIENT_ACTIVATION_CLIENT_H_