Add multiplexing of message pipes in the new EDK.

mojo/edk/test/run_all_perftests.cc

Index: mojo/edk/test/run_all_perftests.cc
diff --git a/mojo/edk/test/run_all_perftests.cc b/mojo/edk/test/run_all_perftests.cc
index d700bc3a6f6719e34f1c287de231d56845e7a121..c277a385ff18406d270b0cfdd50796064acb0559 100644
--- a/mojo/edk/test/run_all_perftests.cc
+++ b/mojo/edk/test/run_all_perftests.cc
@@ -4,17 +4,32 @@
 
 #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.

[yzshen1, 2015/12/04 05:57:05]

where is base::LaunchUnitTests called?

+  new mojo::edk::test::ScopedIPCSupport(test_io_thread.task_runner());
+  mojo::test::TestSupport::Init(new mojo::edk::test::TestSupportImpl());
+
   return test.Run();
 }