ipc: Remove unnecessary attachment broker plumbing.

ipc/mojo/ipc_mojo_perftest.cc

 // Copyright 2014 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/lazy_instance.h"
 #include "base/run_loop.h"
 #include "ipc/ipc_perftest_support.h"
 #include "ipc/mojo/ipc_channel_mojo.h"
 #include "third_party/mojo/src/mojo/edk/embedder/test_embedder.h"
 
@@ skipping 18 matching lines @@
 
   MojoChannelPerfTest();
 
   void TearDown() override {
     IPC::test::IPCChannelPerfTestBase::TearDown();
   }
 
   scoped_ptr<IPC::ChannelFactory> CreateChannelFactory(
       const IPC::ChannelHandle& handle,
       base::SequencedTaskRunner* runner) override {
-    return IPC::ChannelMojo::CreateServerFactory(runner, handle, nullptr);
+    return IPC::ChannelMojo::CreateServerFactory(runner, handle);
   }
 
   bool DidStartClient() override {
     bool ok = IPCTestBase::DidStartClient();
     DCHECK(ok);
     return ok;
   }
 };
 
 MojoChannelPerfTest::MojoChannelPerfTest() {
@@ skipping 25 matching lines @@
 };
 
 MojoTestClient::MojoTestClient() {
   g_mojo_initializer.Get();
 }
 
 scoped_ptr<IPC::Channel> MojoTestClient::CreateChannel(
     IPC::Listener* listener) {
   return scoped_ptr<IPC::Channel>(IPC::ChannelMojo::Create(
       task_runner(), IPCTestBase::GetChannelName("PerformanceClient"),
-      IPC::Channel::MODE_CLIENT, listener, nullptr));
+      IPC::Channel::MODE_CLIENT, listener));
 }
 
 MULTIPROCESS_IPC_TEST_CLIENT_MAIN(PerformanceClient) {
   MojoTestClient client;
   int rv = client.RunMain();
 
   base::RunLoop run_loop;
   run_loop.RunUntilIdle();
 
   return rv;
 }
 
 }  // namespace