ipc: Remove unnecessary attachment broker plumbing.

ipc/sync_socket_unittest.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 "base/sync_socket.h"
 
 #include <stdio.h>
 #include <sstream>
 #include <string>
 
@@ skipping 92 matching lines @@
 
   DISALLOW_COPY_AND_ASSIGN(SyncSocketServerListener);
 };
 
 // Runs the fuzzing server child mode. Returns when the preset number of
 // messages have been received.
 MULTIPROCESS_IPC_TEST_CLIENT_MAIN(SyncSocketServerClient) {
   base::MessageLoopForIO main_message_loop;
   SyncSocketServerListener listener;
   scoped_ptr<IPC::Channel> channel(IPC::Channel::CreateClient(
-      IPCTestBase::GetChannelName("SyncSocketServerClient"), &listener,
-      nullptr));
+      IPCTestBase::GetChannelName("SyncSocketServerClient"), &listener));
   EXPECT_TRUE(channel->Connect());
   listener.Init(channel.get());
   base::MessageLoop::current()->Run();
   return 0;
 }
 
 // The SyncSocket client listener only processes one sort of message,
 // a response from the server.
 class SyncSocketClientListener : public IPC::Listener {
  public:
@@ skipping 186 matching lines @@
 
   // Read from another socket to free some space for a new write.
   char hello[kHelloStringLength] = {0};
   pair[1].Receive(&hello[0], sizeof(hello));
 
   // Should be able to write more data to the buffer now.
   EXPECT_EQ(kHelloStringLength, pair[0].Send(kHelloString, kHelloStringLength));
 }
 
 }  // namespace