AppModelBuilder to athena.

athena/home/public/home_card.h

 // Copyright 2014 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 ATHENA_HOME_PUBLIC_HOME_CARD_H_
 #define ATHENA_HOME_PUBLIC_HOME_CARD_H_
 
 #include "athena/athena_export.h"
 
 namespace athena {
+class AppModelBuilder;
 
 class ATHENA_EXPORT HomeCard {
  public:
   // Creates and deletes the singleton object of the HomeCard
-  // implementation.
-  static HomeCard* Create();
+  // implementation. Takes the ownership of |model_builder|.
+  static HomeCard* Create(AppModelBuilder* model_builder);
   static void Shutdown();
 
   virtual ~HomeCard() {}
 };
 
 }  // namespace athena
 
 #endif  // ATHENA_HOME_PUBLIC_HOME_CARD_H_