aura: Fix WidgetFocusChangeListener::OnNativeFocusChange().

ui/aura/focus_manager.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/focus_manager.h"
 
 #include "ui/aura/client/activation_client.h"
 #include "ui/aura/focus_change_observer.h"
 #include "ui/aura/window_delegate.h"
 
@@ skipping 30 matching lines @@
             focused_window, event)) {
       return;
     }
   }
 
   Window* old_focused_window = focused_window_;
   focused_window_ = focused_window;
   if (old_focused_window && old_focused_window->delegate())
     old_focused_window->delegate()->OnBlur();
   if (focused_window_ && focused_window_->delegate())
-    focused_window_->delegate()->OnFocus();
+    focused_window_->delegate()->OnFocus(old_focused_window);
   if (focused_window_) {
     FOR_EACH_OBSERVER(FocusChangeObserver, observers_,
                       OnWindowFocused(focused_window));
   }
 }
 
 Window* FocusManager::GetFocusedWindow() {
   return focused_window_;
 }
 
 bool FocusManager::IsFocusedWindow(const Window* window) const {
   return focused_window_ == window;
 }
 
 }  // namespace ash