Remove mojo::edk::test::ScopedIPCSupport

mojo/edk/test/scoped_ipc_support.h

-// Copyright 2015 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_TEST_SCOPED_IPC_SUPPORT_H_
-#define MOJO_EDK_TEST_SCOPED_IPC_SUPPORT_H_
-
-#include "base/callback.h"
-#include "base/memory/ref_counted.h"
-#include "base/synchronization/waitable_event.h"
-#include "base/task_runner.h"
-#include "mojo/edk/embedder/process_delegate.h"
-
-namespace mojo {
-namespace edk {
-namespace test {
-
-base::TaskRunner* GetIoTaskRunner();
-
-// A simple class that calls |InitIPCSupport()| on construction and
-// |ShutdownIPCSupport()| on destruction.
-class ScopedIPCSupport : public ProcessDelegate {
- public:
-  explicit ScopedIPCSupport(
-      scoped_refptr<base::TaskRunner> io_thread_task_runner);
-  ~ScopedIPCSupport() override;
-
- private:
-  // |ProcessDelegate| implementation:
-  // Note: Executed on the I/O thread.
-  void OnShutdownComplete() override;
-
-  base::Closure shutdown_closure_;
-  base::WaitableEvent shutdown_event_;
-
-  DISALLOW_COPY_AND_ASSIGN(ScopedIPCSupport);
-};
-
-}  // namespace test
-}  // namespace edk
-}  // namespace mojo
-
-#endif  // MOJO_EDK_TEST_SCOPED_IPC_SUPPORT_H_