mash: Move system tray cast code into //ash/common

chrome/browser/ui/ash/cast_config_delegate_media_router.h

 // Copyright 2015 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 CHROME_BROWSER_UI_ASH_CAST_CONFIG_DELEGATE_MEDIA_ROUTER_H_
 #define CHROME_BROWSER_UI_ASH_CAST_CONFIG_DELEGATE_MEDIA_ROUTER_H_
 
-#include "ash/cast_config_delegate.h"
+#include "ash/common/cast_config_delegate.h"
 #include "base/macros.h"
 #include "base/observer_list.h"
 
 namespace media_router {
 class MediaRouter;
 }
 
 class CastDeviceCache;
 
 // A class which allows the ash tray to communicate with the media router.
@@ skipping 22 matching lines @@
   // This will return null until the media router is initialized.
   CastDeviceCache* devices();
   std::unique_ptr<CastDeviceCache> devices_;
 
   base::ObserverList<ash::CastConfigDelegate::Observer> observer_list_;
 
   DISALLOW_COPY_AND_ASSIGN(CastConfigDelegateMediaRouter);
 };
 
 #endif  // CHROME_BROWSER_UI_ASH_CAST_CONFIG_DELEGATE_MEDIA_ROUTER_H_