Mojo C++ bindings: introduce public associated-interface-related types.

mojo/public/cpp/bindings/lib/multiplex_router.h

Index: mojo/public/cpp/bindings/lib/multiplex_router.h
diff --git a/mojo/public/cpp/bindings/lib/multiplex_router.h b/mojo/public/cpp/bindings/lib/multiplex_router.h
index d9e7323b31395300f5e4f6dba2fae4ed16d26a68..fc0d27eaaed90eaba6acca11ee0c6a834c459d90 100644
--- a/mojo/public/cpp/bindings/lib/multiplex_router.h
+++ b/mojo/public/cpp/bindings/lib/multiplex_router.h
@@ -27,6 +27,9 @@
 #include "mojo/public/cpp/environment/environment.h"
 
 namespace mojo {
+
+class AssociatedGroup;
+
 namespace internal {
 
 class InterfaceEndpointClient;
@@ -85,6 +88,10 @@ class MultiplexRouter
   // and notifies all interfaces running on this pipe.
   void RaiseError();
 
+  scoped_ptr<AssociatedGroup> CreateAssociatedGroup();
+
+  static MultiplexRouter* GetRouter(AssociatedGroup* associated_group);
+
   // ---------------------------------------------------------------------------
   // The following public methods are called on the creating thread.