Add multiplexing of message pipes in the new EDK.

mojo/edk/system/message_pipe_test_utils.cc

 // Copyright 2014 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/system/message_pipe_test_utils.h"
 
 #include "mojo/edk/system/test_utils.h"
 
 namespace mojo {
 namespace edk {
 namespace test {
 
 #if !defined(OS_IOS)
-MultiprocessMessagePipeTestBase::MultiprocessMessagePipeTestBase()
-    : test_io_thread_(base::TestIOThread::kAutoStart),
-      ipc_support_(test_io_thread_.task_runner()) {
-}
-
-MultiprocessMessagePipeTestBase::MultiprocessMessagePipeTestBase(
-    base::MessageLoop::Type main_message_loop_type)
-    : message_loop_(main_message_loop_type),
-      test_io_thread_(base::TestIOThread::kAutoStart),
-      ipc_support_(test_io_thread_.task_runner()) {
+MultiprocessMessagePipeTestBase::MultiprocessMessagePipeTestBase() {
 }
 
 MultiprocessMessagePipeTestBase::~MultiprocessMessagePipeTestBase() {
 }
 #endif
 
 }  // namespace test
 }  // namespace edk
 }  // namespace mojo