aura: Fix WidgetFocusChangeListener::OnNativeFocusChange().

ui/aura/test/test_window_delegate.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_TEST_TEST_WINDOW_DELEGATE_H_
 #define UI_AURA_TEST_TEST_WINDOW_DELEGATE_H_
 #pragma once
 
 #include "base/compiler_specific.h"
 #include "third_party/skia/include/core/SkColor.h"
@@ skipping 10 matching lines @@
   virtual ~TestWindowDelegate();
 
   void set_window_component(int window_component) {
     window_component_ = window_component;
   }
 
   // Overridden from WindowDelegate:
   virtual gfx::Size GetMinimumSize() const OVERRIDE;
   virtual void OnBoundsChanged(const gfx::Rect& old_bounds,
                                const gfx::Rect& new_bounds) OVERRIDE;
-  virtual void OnFocus() OVERRIDE;
+  virtual void OnFocus(Window* old_focused_window) OVERRIDE;
   virtual void OnBlur() OVERRIDE;
   virtual bool OnKeyEvent(KeyEvent* event) OVERRIDE;
   virtual gfx::NativeCursor GetCursor(const gfx::Point& point) OVERRIDE;
   virtual int GetNonClientComponent(const gfx::Point& point) const OVERRIDE;
   virtual bool ShouldDescendIntoChildForEventHandling(
       Window* child,
       const gfx::Point& location) OVERRIDE;
   virtual bool OnMouseEvent(MouseEvent* event) OVERRIDE;
   virtual ui::TouchStatus OnTouchEvent(TouchEvent* event) OVERRIDE;
   virtual ui::GestureStatus OnGestureEvent(GestureEvent* event) OVERRIDE;
@@ skipping 46 matching lines @@
  private:
   gfx::Rect mask_rect_;
 
   DISALLOW_COPY_AND_ASSIGN(MaskedWindowDelegate);
 };
 
 }  // namespace test
 }  // namespace aura
 
 #endif  // UI_AURA_TEST_TEST_WINDOW_DELEGATE_H_