Fix DCHECK in ipc_perftests

ipc/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 <stddef.h>
 #include <memory>
 
 #include "base/memory/ptr_util.h"
 #include "base/process/process_metrics.h"
 #include "base/run_loop.h"
@@ skipping 441 matching lines @@
  private:
   base::MessageLoopForIO main_message_loop_;
   std::unique_ptr<ChannelReflectorListener> listener_;
   std::unique_ptr<Channel> channel_;
   mojo::ScopedMessagePipeHandle handle_;
 };
 
 MULTIPROCESS_TEST_MAIN(MojoPerfTestClientTestChildMain) {
   MojoPerfTestClient client;
   int rv = mojo::edk::test::MultiprocessTestHelper::RunClientMain(
-      base::Bind(&MojoPerfTestClient::Run, base::Unretained(&client)));
+      base::Bind(&MojoPerfTestClient::Run, base::Unretained(&client)),
+      true /* pass_pipe_ownership_to_main */);
 
   base::RunLoop run_loop;
   run_loop.RunUntilIdle();
 
   return rv;
 }
 
 class ReflectorImpl : public IPC::mojom::Reflector {
  public:
   explicit ReflectorImpl(mojo::ScopedMessagePipeHandle handle)
@@ skipping 298 matching lines @@
   RunSingleThreadPostTaskPingPongServer();
 }
 
 // Sends the same data as above without using PostTask to the same thread.
 TEST_F(CallbackPerfTest, SingleThreadNoPostTaskPingPong) {
   RunSingleThreadNoPostTaskPingPongServer();
 }
 
 }  // namespace
 }  // namespace IPC