Add some perf tests to compare Mojo overhead.

ipc/run_all_perftests.cc

Index: ipc/run_all_perftests.cc
diff --git a/ipc/run_all_perftests.cc b/ipc/run_all_perftests.cc
index a942b8b57496f6401f833bbea96b52168ceb8138..1e3d91fab49af9c0d3e014273523fbc75cc06516 100644
--- a/ipc/run_all_perftests.cc
+++ b/ipc/run_all_perftests.cc
@@ -6,12 +6,18 @@
 
 #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/scoped_ipc_support.h"
+#include "mojo/edk/test/test_support_impl.h"
 
 int main(int argc, char** argv) {
   base::PerfTestSuite test(argc, argv);
 
   mojo::edk::Init();
+  base::TestIOThread test_io_thread(base::TestIOThread::kAutoStart);
+  mojo::edk::test::ScopedIPCSupport ipc_support(test_io_thread.task_runner());
+  mojo::test::TestSupport::Init(new mojo::edk::test::TestSupportImpl());
 
   return test.Run();
 }