[mojo-edk] Add support for transferring mach ports.

mojo/edk/test/multiprocess_test_helper.cc

Index: mojo/edk/test/multiprocess_test_helper.cc
diff --git a/mojo/edk/test/multiprocess_test_helper.cc b/mojo/edk/test/multiprocess_test_helper.cc
index efc4e6b4dbbb261d0987630ec5bcd15de888c52e..7098934faab777137424b63e800b8ebb5f7fa4e8 100644
--- a/mojo/edk/test/multiprocess_test_helper.cc
+++ b/mojo/edk/test/multiprocess_test_helper.cc
@@ -27,6 +27,8 @@
 
 #if defined(OS_WIN)
 #include "base/win/windows_version.h"
+#elif defined(OS_MACOSX) && !defined(OS_IOS)
+#include "base/mac/mach_port_broker.h"
 #endif
 
 namespace mojo {
@@ -148,6 +150,10 @@ void MultiprocessTestHelper::ChildSetup() {
       ->GetSwitchValueASCII(kMojoPrimordialPipeToken);
   CHECK(!primordial_pipe_token.empty());
 
+#if defined(OS_MACOSX) && !defined(OS_IOS)
+  CHECK(base::MachPortBroker::ChildSendTaskPortToParent("mojo_test"));
+#endif
+
   SetParentPipeHandle(
       PlatformChannelPair::PassClientHandleFromParentProcess(
           *base::CommandLine::ForCurrentProcess()));