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

mojo/public/cpp/bindings/lib/interface_endpoint_client.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/interface_endpoint_client.h"
 
 #include "base/bind.h"
 #include "base/message_loop/message_loop.h"
 #include "base/stl_util.h"
+#include "mojo/public/cpp/bindings/associated_group.h"
 #include "mojo/public/cpp/bindings/lib/multiplex_router.h"
 
 namespace mojo {
 namespace internal {
 
 // ----------------------------------------------------------------------------
 
 namespace {
 
 // When receiving an incoming message which expects a repsonse,
@@ skipping 90 matching lines @@
 }
 
 InterfaceEndpointClient::~InterfaceEndpointClient() {
   DCHECK(thread_checker_.CalledOnValidThread());
 
   STLDeleteValues(&responders_);
 
   handle_.router()->DetachEndpointClient(handle_);
 }
 
+AssociatedGroup* InterfaceEndpointClient::associated_group() {
+  if (!associated_group_)
+    associated_group_ = handle_.router()->CreateAssociatedGroup();
+  return associated_group_.get();
+}
+
 ScopedInterfaceEndpointHandle InterfaceEndpointClient::PassHandle() {
   DCHECK(thread_checker_.CalledOnValidThread());
   DCHECK(!has_pending_responders());
 
   if (!handle_.is_valid())
     return ScopedInterfaceEndpointHandle();
 
   handle_.router()->DetachEndpointClient(handle_);
 
   return handle_.Pass();
@@ skipping 79 matching lines @@
   } else {
     if (!incoming_receiver_)
       return false;
 
     return incoming_receiver_->Accept(message);
   }
 }
 
 }  // namespace internal
 }  // namespace mojo