Eliminate deferred destruction of AssociatedGroupController

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

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef MOJO_PUBLIC_CPP_BINDINGS_LIB_MULTIPLEX_ROUTER_H_
 #define MOJO_PUBLIC_CPP_BINDINGS_LIB_MULTIPLEX_ROUTER_H_
 
 #include <stdint.h>
 
 #include <deque>
@@ skipping 183 matching lines @@
                                     EndpointStateUpdateType type);
 
   void RaiseErrorInNonTestingMode();
 
   InterfaceEndpoint* FindOrInsertEndpoint(InterfaceId id, bool* inserted);
 
   // Whether to set the namespace bit when generating interface IDs. Please see
   // comments of kInterfaceIdNamespaceMask.
   const bool set_interface_id_namespace_bit_;
 
+  scoped_refptr<base::SingleThreadTaskRunner> task_runner_;
+
   MessageHeaderValidator header_validator_;
   Connector connector_;
 
   base::ThreadChecker thread_checker_;
 
   // Protects the following members.
   mutable base::Lock lock_;
   PipeControlMessageHandler control_message_handler_;
   PipeControlMessageProxy control_message_proxy_;
 
@@ skipping 13 matching lines @@
 
   bool testing_mode_;
 
   DISALLOW_COPY_AND_ASSIGN(MultiplexRouter);
 };
 
 }  // namespace internal
 }  // namespace mojo
 
 #endif  // MOJO_PUBLIC_CPP_BINDINGS_LIB_MULTIPLEX_ROUTER_H_