[Media Router] Convert MediaRouter to use GURL for presentation URLs.

chrome/browser/ui/webui/media_router/query_result_manager.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_WEBUI_MEDIA_ROUTER_QUERY_RESULT_MANAGER_H_
 #define CHROME_BROWSER_UI_WEBUI_MEDIA_ROUTER_QUERY_RESULT_MANAGER_H_
 
 #include <map>
 #include <memory>
 #include <set>
 #include <unordered_set>
 #include <vector>
 
 #include "base/gtest_prod_util.h"
 #include "base/macros.h"
 #include "base/observer_list.h"
 #include "chrome/browser/media/router/media_routes_observer.h"
 #include "chrome/browser/media/router/media_sink.h"
 #include "chrome/browser/media/router/media_source.h"
 #include "chrome/browser/ui/webui/media_router/cast_modes_with_media_sources.h"
 #include "chrome/browser/ui/webui/media_router/media_cast_mode.h"
 #include "chrome/browser/ui/webui/media_router/media_sink_with_cast_modes.h"
 
+class GURL;
+
 namespace media_router {
 
 class MediaRouter;
 class MediaSinksObserver;
 struct RoutesQueryResult;
 struct SinksQueryResult;
 
 // The Media Router dialog allows the user to initiate casting using one of
 // several actions (each represented by a cast mode).  Each cast mode is
 // associated with a vector of media sources.  This class allows the dialog to
@@ skipping 136 matching lines @@
 
   // Not owned by this object.
   MediaRouter* const router_;
 
   DISALLOW_COPY_AND_ASSIGN(QueryResultManager);
 };
 
 }  // namespace media_router
 
 #endif  // CHROME_BROWSER_UI_WEBUI_MEDIA_ROUTER_QUERY_RESULT_MANAGER_H_