Mojo C++ bindings: remove some usage of AssociatedGroup from user code.

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

 // 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.
 
 #include "mojo/public/cpp/bindings/lib/multiplex_router.h"
 
 #include <stdint.h>
 
 #include <utility>
 
 #include "base/bind.h"
 #include "base/location.h"
 #include "base/macros.h"
 #include "base/memory/ptr_util.h"
 #include "base/single_thread_task_runner.h"
 #include "base/stl_util.h"
 #include "base/threading/thread_task_runner_handle.h"
-#include "mojo/public/cpp/bindings/associated_group.h"
 #include "mojo/public/cpp/bindings/interface_endpoint_client.h"
 #include "mojo/public/cpp/bindings/interface_endpoint_controller.h"
 #include "mojo/public/cpp/bindings/lib/may_auto_lock.h"
 #include "mojo/public/cpp/bindings/sync_handle_watcher.h"
 
 namespace mojo {
 namespace internal {
 
 // InterfaceEndpoint stores the information of an interface endpoint registered
 // with the router.
@@ skipping 945 matching lines @@
 
 void MultiplexRouter::AssertLockAcquired() {
 #if DCHECK_IS_ON()
   if (lock_)
     lock_->AssertAcquired();
 #endif
 }
 
 }  // namespace internal
 }  // namespace mojo