[Media Router] Clean up issues related code.

chrome/browser/ui/webui/media_router/media_router_ui.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_MEDIA_ROUTER_UI_H_
 #define CHROME_BROWSER_UI_WEBUI_MEDIA_ROUTER_MEDIA_ROUTER_UI_H_
 
 #include <memory>
 #include <set>
 #include <string>
@@ skipping 95 matching lines @@
   bool CreateRoute(const MediaSink::Id& sink_id, MediaCastMode cast_mode);
 
   // Calls MediaRouter to join the given route.
   bool ConnectRoute(const MediaSink::Id& sink_id,
                     const MediaRoute::Id& route_id);
 
   // Calls MediaRouter to close the given route.
   void CloseRoute(const MediaRoute::Id& route_id);
 
   // Calls MediaRouter to add the given issue.
-  void AddIssue(const Issue& issue);
+  void AddIssue(const IssueInfo& issue);
 
   // Calls MediaRouter to clear the given issue.
   void ClearIssue(const Issue::Id& issue_id);
 
   // Calls MediaRouter to search route providers for sinks matching
   // |search_criteria| with the source that is currently associated with
   // |cast_mode|. The user's domain |domain| is also used.
   void SearchSinksAndCreateRoute(const MediaSink::Id& sink_id,
                                  const std::string& search_criteria,
                                  const std::string& domain,
@@ skipping 86 matching lines @@
   static std::string GetExtensionName(const GURL& url,
                                       extensions::ExtensionRegistry* registry);
 
   // QueryResultManager::Observer
   void OnResultsUpdated(
       const std::vector<MediaSinkWithCastModes>& sinks) override;
 
   // Called by |issues_observer_| when the top issue has changed.
   // If the UI is already initialized, notifies |handler_| to update the UI.
   // Ignored if the UI is not yet initialized.
-  void SetIssue(const Issue* issue);
+  void SetIssue(const Issue& issue);
+  void ClearIssue();
 
   // Called by |routes_observer_| when the set of active routes has changed.
   void OnRoutesUpdated(const std::vector<MediaRoute>& routes,
                        const std::vector<MediaRoute::Id>& joinable_route_ids);
 
   // Callback passed to MediaRouter to receive response to route creation
   // requests.
   void OnRouteResponseReceived(
       int route_request_id,
       const MediaSink::Id& sink_id,
@@ skipping 114 matching lines @@
   // NOTE: Weak pointers must be invalidated before all other member variables.
   // Therefore |weak_factory_| must be placed at the end.
   base::WeakPtrFactory<MediaRouterUI> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(MediaRouterUI);
 };
 
 }  // namespace media_router
 
 #endif  // CHROME_BROWSER_UI_WEBUI_MEDIA_ROUTER_MEDIA_ROUTER_UI_H_