aura: Fix WidgetFocusChangeListener::OnNativeFocusChange().

ui/aura/test/test_window_delegate.cc

 // 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.
 
 #include "ui/aura/test/test_window_delegate.h"
 
 #include "ui/aura/event.h"
 #include "ui/aura/window.h"
 #include "ui/base/hit_test.h"
 #include "ui/gfx/canvas.h"
@@ skipping 13 matching lines @@
 }
 
 gfx::Size TestWindowDelegate::GetMinimumSize() const {
   return gfx::Size();
 }
 
 void TestWindowDelegate::OnBoundsChanged(const gfx::Rect& old_bounds,
                                          const gfx::Rect& new_bounds) {
 }
 
-void TestWindowDelegate::OnFocus() {
+void TestWindowDelegate::OnFocus(Window* old_focused_window) {
 }
 
 void TestWindowDelegate::OnBlur() {
 }
 
 bool TestWindowDelegate::OnKeyEvent(KeyEvent* event) {
   return false;
 }
 
 gfx::NativeCursor TestWindowDelegate::GetCursor(const gfx::Point& point) {
@@ skipping 83 matching lines @@
 bool MaskedWindowDelegate::HasHitTestMask() const {
   return true;
 }
 
 void MaskedWindowDelegate::GetHitTestMask(gfx::Path* mask) const {
   mask->addRect(RectToSkRect(mask_rect_));
 }
 
 }  // namespace test
 }  // namespace aura