Revert "Move mojo edk into mojo/edk"

mojo/edk/system/message_pipe_test_utils.h

-// 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.
-
-#ifndef MOJO_EDK_SYSTEM_MESSAGE_PIPE_TEST_UTILS_H_
-#define MOJO_EDK_SYSTEM_MESSAGE_PIPE_TEST_UTILS_H_
-
-#include "base/test/test_io_thread.h"
-#include "mojo/edk/embedder/simple_platform_support.h"
-#include "mojo/edk/system/channel.h"
-#include "mojo/edk/system/test_utils.h"
-#include "mojo/edk/test/multiprocess_test_helper.h"
-
-namespace mojo {
-namespace system {
-
-class Channel;
-class ChannelEndpoint;
-class MessagePipe;
-
-namespace test {
-
-MojoResult WaitIfNecessary(scoped_refptr<MessagePipe> mp,
-                           MojoHandleSignals signals,
-                           HandleSignalsState* signals_state);
-
-class ChannelThread {
- public:
-  explicit ChannelThread(embedder::PlatformSupport* platform_support);
-  ~ChannelThread();
-
-  void Start(embedder::ScopedPlatformHandle platform_handle,
-             scoped_refptr<ChannelEndpoint> channel_endpoint);
-  void Stop();
-
- private:
-  void InitChannelOnIOThread(embedder::ScopedPlatformHandle platform_handle,
-                             scoped_refptr<ChannelEndpoint> channel_endpoint);
-  void ShutdownChannelOnIOThread();
-
-  embedder::PlatformSupport* const platform_support_;
-  base::TestIOThread test_io_thread_;
-  scoped_refptr<Channel> channel_;
-
-  DISALLOW_COPY_AND_ASSIGN(ChannelThread);
-};
-
-#if !defined(OS_IOS)
-class MultiprocessMessagePipeTestBase : public testing::Test {
- public:
-  MultiprocessMessagePipeTestBase();
-  virtual ~MultiprocessMessagePipeTestBase();
-
- protected:
-  void Init(scoped_refptr<ChannelEndpoint> ep);
-
-  embedder::PlatformSupport* platform_support() { return &platform_support_; }
-  mojo::test::MultiprocessTestHelper* helper() { return &helper_; }
-
- private:
-  embedder::SimplePlatformSupport platform_support_;
-  ChannelThread channel_thread_;
-  mojo::test::MultiprocessTestHelper helper_;
-
-  DISALLOW_COPY_AND_ASSIGN(MultiprocessMessagePipeTestBase);
-};
-#endif
-
-}  // namespace test
-}  // namespace system
-}  // namespace mojo
-
-#endif  // MOJO_EDK_SYSTEM_MESSAGE_PIPE_TEST_UTILS_H_