--- a/chrome/browser/media/router/media_router_feature.h	2017-10-11 15:10:22.000000000 -0400
+++ b/chrome/browser/media/router/media_router_feature.h	2017-10-15 10:02:19.671623173 -0400
@@ -16,6 +16,17 @@
 // Returns true if Media Router is enabled for |context|.
 bool MediaRouterEnabled(content::BrowserContext* context);
 
+extern const base::Feature kEnableCastDiscovery;
+
+// Returns true if browser side DIAL discovery is enabled.
+bool DialLocalDiscoveryEnabled();
+
+// Returns true if browser side Cast discovery is enabled.
+bool CastDiscoveryEnabled();
+
+// Returns true if local media casting is enabled.
+bool CastLocalMediaEnabled();
+
 #if !defined(OS_ANDROID)
 
 extern const base::Feature kEnableCastDiscovery;