Split surface id and simplify connecting to surfaces service

services/surfaces/surfaces_service_application.h

Index: services/surfaces/surfaces_service_application.h
diff --git a/services/surfaces/surfaces_service_application.h b/services/surfaces/surfaces_service_application.h
index 04b33dd6484887e3e0011b47f9a7c0caf71320a2..e1ff43562a7ec09f22dd2f03398ad7901ace02af 100644
--- a/services/surfaces/surfaces_service_application.h
+++ b/services/surfaces/surfaces_service_application.h
@@ -23,6 +23,7 @@ namespace surfaces {
 class SurfacesServiceApplication
     : public mojo::ApplicationDelegate,
       public mojo::InterfaceFactory<mojo::SurfacesService>,
+      public mojo::InterfaceFactory<mojo::Surface>,
       public SurfacesImpl::Client,
       public SurfacesScheduler::Client {
  public:
@@ -34,10 +35,14 @@ class SurfacesServiceApplication
   bool ConfigureIncomingConnection(
       mojo::ApplicationConnection* connection) override;
 
-  // InterfaceFactory<SurfacsServicee> implementation.
+  // InterfaceFactory<SurfacesServicee> implementation.
   void Create(mojo::ApplicationConnection* connection,
               mojo::InterfaceRequest<mojo::SurfacesService> request) override;
 
+  // InterfaceFactory<Surface> implementation.
+  void Create(mojo::ApplicationConnection* connection,
+              mojo::InterfaceRequest<mojo::Surface> request) override;
+
   // SurfacesImpl::Client implementation.
   void OnVSyncParametersUpdated(base::TimeTicks timebase,
                                 base::TimeDelta interval) override;