Make aura::clients take Window instead of RootWindow

ui/aura/client/activation_client.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_CLIENT_H_
 #define UI_AURA_CLIENT_ACTIVATION_CLIENT_H_
 
 #include "ui/aura/aura_export.h"
-#include "ui/aura/window.h"
 
 namespace ui {
 class Event;
 }
 
 namespace aura {
-class RootWindow;
+class Window;
 
 namespace client {
 class ActivationChangeObserver;
 
 // An interface implemented by an object that manages window activation.
 class AURA_EXPORT ActivationClient {
  public:
   // Adds/Removes ActivationChangeObservers.
   virtual void AddObserver(ActivationChangeObserver* observer) = 0;
   virtual void RemoveObserver(ActivationChangeObserver* observer) = 0;
@@ skipping 23 matching lines @@
   virtual bool OnWillFocusWindow(Window* window, const ui::Event* event) = 0;
 
   // Returns true if |window| can be activated, false otherwise. If |window| has
   // a modal child it can not be activated.
   virtual bool CanActivateWindow(Window* window) const = 0;
 
  protected:
   virtual ~ActivationClient() {}
 };
 
-// Sets/Gets the activation client on the RootWindow.
-AURA_EXPORT void SetActivationClient(RootWindow* root_window,
+// Sets/Gets the activation client on the root Window.
+AURA_EXPORT void SetActivationClient(Window* root_window,
                                      ActivationClient* client);
-AURA_EXPORT ActivationClient* GetActivationClient(RootWindow* root_window);
+AURA_EXPORT ActivationClient* GetActivationClient(Window* root_window);
 
 // Some types of transient window are only visible when active.
 // The transient parents of these windows may have visual appearance properties
 // that differ from transient parents that can be deactivated.
 // The presence of this property implies these traits.
 // TODO(beng): currently the UI framework (views) implements the actual
 //             close-on-deactivate component of this feature but it should be
 //             possible to implement in the aura client.
 AURA_EXPORT void SetHideOnDeactivate(Window* window, bool hide_on_deactivate);
 AURA_EXPORT bool GetHideOnDeactivate(Window* window);
 
 }  // namespace clients
 }  // namespace aura
 
 #endif  // UI_AURA_CLIENT_ACTIVATION_CLIENT_H_