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

mojo/edk/test/multiprocess_test_helper.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 "mojo/edk/test/multiprocess_test_helper.h"
 
 #include <functional>
 #include <set>
 #include <utility>
 
 #include "base/base_switches.h"
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/files/file_path.h"
 #include "base/logging.h"
 #include "base/memory/ref_counted.h"
 #include "base/process/kill.h"
 #include "base/process/process_handle.h"
 #include "base/run_loop.h"
 #include "base/strings/stringprintf.h"
 #include "base/task_runner.h"
 #include "base/thread_task_runner_handle.h"
 #include "build/build_config.h"
 #include "mojo/edk/embedder/embedder.h"
 #include "mojo/edk/embedder/platform_channel_pair.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 #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 {
 namespace edk {
 namespace test {
 
 namespace {
 
 const char kMojoPrimordialPipeToken[] = "mojo-primordial-pipe-token";
 
@@ skipping 101 matching lines @@
 }
 
 // static
 void MultiprocessTestHelper::ChildSetup() {
   CHECK(base::CommandLine::InitializedForCurrentProcess());
 
   primordial_pipe_token = base::CommandLine::ForCurrentProcess()
       ->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()));
 }
 
 // static
 int MultiprocessTestHelper::RunClientMain(
     const base::Callback<int(MojoHandle)>& main) {
   return RunClientFunction([main](MojoHandle handle){
     return main.Run(handle);
   });
 }
 
 // static
 int MultiprocessTestHelper::RunClientTestMain(
     const base::Callback<void(MojoHandle)>& main) {
   return RunClientFunction([main](MojoHandle handle) {
     main.Run(handle);
     return (::testing::Test::HasFatalFailure() ||
             ::testing::Test::HasNonfatalFailure()) ? 1 : 0;
   });
 }
 
 // static
 std::string MultiprocessTestHelper::primordial_pipe_token;
 
 }  // namespace test
 }  // namespace edk
 }  // namespace mojo