Add multiplexing of message pipes in the new EDK.

mojo/edk/test/run_all_perftests.cc

 // Copyright 2013 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/command_line.h"
 #include "base/test/perf_test_suite.h"
+#include "base/test/test_io_thread.h"
 #include "mojo/edk/embedder/embedder.h"
+#include "mojo/edk/test/multiprocess_test_helper.h"
+#include "mojo/edk/test/scoped_ipc_support.h"
 #include "mojo/edk/test/test_support_impl.h"
 #include "mojo/public/tests/test_support_private.h"
 
 int main(int argc, char** argv) {
-  mojo::edk::Init();
-  mojo::test::TestSupport::Init(new mojo::edk::test::TestSupportImpl());
+  base::PerfTestSuite test(argc, argv);
+
+  // Must be run before mojo::edk::Init.
+  if (base::CommandLine::ForCurrentProcess()->HasSwitch(
+          mojo::edk::test::kBrokerHandleSwitch)) {
+    mojo::edk::PreInitializeChildProcess();
+  }
 
   // TODO(use_chrome_edk): temporary to force new EDK.
-  base::PerfTestSuite test(argc, argv);
   base::CommandLine::ForCurrentProcess()->AppendSwitch("--use-new-edk");
 
+  mojo::edk::Init();
+  base::TestIOThread test_io_thread(base::TestIOThread::kAutoStart);
+  // Leak this because its destructor calls mojo::edk::ShutdownIPCSupport which
+  // really does nothing in the new EDK but does depend on the current message
+  // loop, which is destructed inside base::LaunchUnitTests.
+  new mojo::edk::test::ScopedIPCSupport(test_io_thread.task_runner());
+  mojo::test::TestSupport::Init(new mojo::edk::test::TestSupportImpl());
+
   return test.Run();
 }