IPC: Make ChannelReader inherit from SupportsAttachmentBrokering.

ipc/ipc_test_base.cc

 // Copyright (c) 2012 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 "build/build_config.h"
 
 #include "base/single_thread_task_runner.h"
 #include "ipc/ipc_test_base.h"
 
 #include "base/command_line.h"
@@ skipping 72 matching lines @@
       channel_handle, task_runner().get())->BuildChannel(listener);
 }
 
 void IPCTestBase::CreateChannelProxy(
     IPC::Listener* listener,
     const scoped_refptr<base::SingleThreadTaskRunner>& ipc_task_runner) {
   CHECK(!channel_.get());
   CHECK(!channel_proxy_.get());
   channel_proxy_ = IPC::ChannelProxy::Create(
       CreateChannelFactory(GetTestChannelHandle(), ipc_task_runner.get()),
-      listener,
-      ipc_task_runner);
+      listener, ipc_task_runner);
 }
 
 void IPCTestBase::DestroyChannelProxy() {
   CHECK(channel_proxy_.get());
   channel_proxy_.reset();
 }
 
 std::string IPCTestBase::GetTestMainName() const {
   return test_client_name_ + "TestClientMain";
 }
@@ skipping 49 matching lines @@
   return GetChannelName(test_client_name_);
 }
 
 scoped_refptr<base::SequencedTaskRunner> IPCTestBase::task_runner() {
   return message_loop_->task_runner();
 }
 
 scoped_ptr<IPC::ChannelFactory> IPCTestBase::CreateChannelFactory(
     const IPC::ChannelHandle& handle,
     base::SequencedTaskRunner* runner) {
-  return IPC::ChannelFactory::Create(handle, IPC::Channel::MODE_SERVER);
+  return IPC::ChannelFactory::Create(handle, IPC::Channel::MODE_SERVER,
+                                     nullptr);
 }