Add a full screen virtual keyboard to virtual keyboard root window

ash/shell/keyboard_controller_proxy_stub.h

 // Copyright 2013 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 ASH_KEYBOARD_CONTROLLER_PROXY_STUB_H_
 #define ASH_KEYBOARD_CONTROLLER_PROXY_STUB_H_
 
 #include "ash/ash_export.h"
+#include "ui/aura/test/test_window_delegate.h"
 #include "ui/keyboard/keyboard_controller_proxy.h"
 
+namespace aura {
+class Window;
+}  // namespace aura
+
 namespace ash {
 
 // Stub implementation of KeyboardControllerProxy
 class ASH_EXPORT KeyboardControllerProxyStub
     : public keyboard::KeyboardControllerProxy {
  public:
   KeyboardControllerProxyStub();
   virtual ~KeyboardControllerProxyStub();
 
+  aura::Window* GetKeyboardWindow() OVERRIDE;
+
  private:
   // Overridden from keyboard::KeyboardControllerProxy:
   virtual content::BrowserContext* GetBrowserContext() OVERRIDE;
   virtual ui::InputMethod* GetInputMethod() OVERRIDE;
   virtual void RequestAudioInput(content::WebContents* web_contents,
       const content::MediaStreamRequest& request,
       const content::MediaResponseCallback& callback) OVERRIDE;
 
+  aura::test::TestWindowDelegate delegate_;
   DISALLOW_COPY_AND_ASSIGN(KeyboardControllerProxyStub);
 };
 
 }  // namespace ash
 
 #endif  // ASH_KEYBOARD_CONTROLLER_PROXY_STUB_H_