Relanding "Multiprocess test client: Android child process launcher rework."

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 f426a2a5b199843607aeb1bebfb2696ee26b168b..8f2511f1c4af42b932ebdc879b2ca6a4a2b7f02a 100644
--- a/mojo/edk/test/run_all_perftests.cc
+++ b/mojo/edk/test/run_all_perftests.cc
@@ -13,10 +13,6 @@
 #include "mojo/public/tests/test_support_private.h"
 
 int main(int argc, char** argv) {
-#if defined(OS_ANDROID)
-  base::InitAndroidMultiProcessTestHelper(main);
-#endif
-
   base::PerfTestSuite test(argc, argv);
 
   mojo::edk::Init();