Clean up public interface of AttachmentBrokerUnprivileged.

ipc/attachment_broker.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 "ipc/attachment_broker.h"
 
 #include <algorithm>
 
 #include "base/bind.h"
 #include "base/location.h"
 #include "base/sequenced_task_runner.h"
 
 namespace {
 IPC::AttachmentBroker* g_attachment_broker = nullptr;
 }
 
 namespace IPC {
 
 // static
 void AttachmentBroker::SetGlobal(AttachmentBroker* broker) {
-  CHECK(!g_attachment_broker || !broker)
-      << "Global attachment broker address: " << broker
-      << ". New attachment broker address: " << broker;
   g_attachment_broker = broker;
 }
 
 // static
 AttachmentBroker* AttachmentBroker::GetGlobal() {
   return g_attachment_broker;
 }
 
 AttachmentBroker::AttachmentBroker() : last_unique_id_(0) {}
 AttachmentBroker::~AttachmentBroker() {}
@@ skipping 41 matching lines @@
 }
 
 void AttachmentBroker::RegisterCommunicationChannel(Endpoint* endpoint) {
   NOTREACHED();
 }
 
 void AttachmentBroker::DeregisterCommunicationChannel(Endpoint* endpoint) {
   NOTREACHED();
 }
 
+void AttachmentBroker::RegisterBrokerCommunicationChannel(Endpoint* endpoint) {
+  NOTREACHED();
+}
+
+void AttachmentBroker::DeregisterBrokerCommunicationChannel(
+    Endpoint* endpoint) {
+  NOTREACHED();
+}
+
+bool AttachmentBroker::IsPrivilegedBroker() {
+  NOTREACHED();
+  return false;
+}
+
 void AttachmentBroker::HandleReceivedAttachment(
     const scoped_refptr<BrokerableAttachment>& attachment) {
   {
     base::AutoLock auto_lock(*get_lock());
     attachments_.push_back(attachment);
   }
   NotifyObservers(attachment->GetIdentifier());
 }
 
 void AttachmentBroker::NotifyObservers(
@@ skipping 28 matching lines @@
     observer = it->observer;
   }
 
   observer->ReceivedBrokerableAttachmentWithId(id);
 }
 
 AttachmentBroker::ObserverInfo::ObserverInfo() {}
 AttachmentBroker::ObserverInfo::~ObserverInfo() {}
 
 }  // namespace IPC