Move app_shell specific impl from athena_lib to athena_shell_lib

athena/activity/public/activity_factory.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_ACTIVITY_PUBLIC_ACTIVITY_FACTORY_H_
 #define ATHENA_ACTIVITY_PUBLIC_ACTIVITY_FACTORY_H_
 
 #include "athena/athena_export.h"
 #include "url/gurl.h"
 
+namespace apps {
+class AppWindow;
+}
+
 namespace content {
 class BrowserContext;
 }
 
 namespace extensions {
 class ShellAppWindow;
 }
 
 namespace athena {
 class Activity;
 
 class ATHENA_EXPORT ActivityFactory {
  public:
   // Registers the singleton factory.
   static void RegisterActivityFactory(ActivityFactory* factory);
 
   // Gets the registered singleton factory.
   static ActivityFactory* Get();
 
   // Shutdowns the factory.
   static void Shutdown();
 
   virtual ~ActivityFactory() {}
 
   // Create an activity of a web page.
   virtual Activity* CreateWebActivity(content::BrowserContext* browser_context,
                                       const GURL& url) = 0;
 
-  // Create an activity of an app with |app_window|. The returned activity
-  // should own |app_window|.
+  // Create an activity of an app with |app_window| for app shell environemnt.
+  // The returned activity should own |app_window|.
+  // TODO(oshima): Consolidate these two methods to create AppActivity
+  // once crbug.com/403726 is finished.
   virtual Activity* CreateAppActivity(
       extensions::ShellAppWindow* app_window) = 0;
+
+  // Create an activity of an app with |app_window| for chrome environment.
+  virtual Activity* CreateAppActivity(apps::AppWindow* app_window) = 0;
 };
 
 }  // namespace athena
 
 #endif  // ATHENA_ACTIVITY_PUBLIC_ACTIVITY_FACTORY_H_