Media Remoting: Add mojo interfaces between browser and extension.

chrome/browser/media/router/media_router_base.cc

Index: chrome/browser/media/router/media_router_base.cc
diff --git a/chrome/browser/media/router/media_router_base.cc b/chrome/browser/media/router/media_router_base.cc
index d3ec5e6aeb2ed135af64e4a82f992a7bad4fc4f1..5abacf8b284e2ffdf8e3e142fc651715030b120e 100644
--- a/chrome/browser/media/router/media_router_base.cc
+++ b/chrome/browser/media/router/media_router_base.cc
@@ -155,4 +155,12 @@ void MediaRouterBase::Shutdown() {
 void MediaRouterBase::DetachRouteController(const MediaRoute::Id& route_id,
                                             MediaRouteController* controller) {}
 
+void MediaRouterBase::RegisterRemotingSource(
+    int32_t tab_id,
+    CastRemotingConnector* remoting_source) {}
+
+void MediaRouterBase::UnRegisterRemotingSource(
+    int32_t tab_id,
+    CastRemotingConnector* remoting_source) {}
+
 }  // namespace media_router