[Media Router] Add CastMediaSinkService

chrome/browser/media/router/mojo/media_router_mojo_impl.h

Index: chrome/browser/media/router/mojo/media_router_mojo_impl.h
diff --git a/chrome/browser/media/router/mojo/media_router_mojo_impl.h b/chrome/browser/media/router/mojo/media_router_mojo_impl.h
index 6dbf96e212c0a86d3dd0136e0b8c14a960a66805..f8a74d3957c263d444796dbb5f5c6d3ffa70b8d6 100644
--- a/chrome/browser/media/router/mojo/media_router_mojo_impl.h
+++ b/chrome/browser/media/router/mojo/media_router_mojo_impl.h
@@ -44,6 +44,7 @@ class Extension;
 namespace media_router {
 
 enum class MediaRouteProviderWakeReason;
+class CastMediaSinkService;
 class DialMediaSinkServiceProxy;
 class EventPageRequestManager;
 
@@ -411,6 +412,9 @@ class MediaRouterMojoImpl : public MediaRouterBase,
   // Media sink service for DIAL devices.
   scoped_refptr<DialMediaSinkServiceProxy> dial_media_sink_service_proxy_;
 
+  // Media sink service for CAST devices.
+  scoped_refptr<CastMediaSinkService> cast_media_sink_service_;
+
   content::BrowserContext* const context_;
 
   // Request manager responsible for waking the component extension and calling