Move mojo\shell to services\shell

mojo/shell/runner/host/child_process_base.h

-// Copyright 2016 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_SHELL_RUNNER_HOST_CHILD_PROCESS_BASE_H_
-#define MOJO_SHELL_RUNNER_HOST_CHILD_PROCESS_BASE_H_
-
-#include "base/callback.h"
-#include "mojo/shell/public/interfaces/shell_client.mojom.h"
-
-namespace mojo {
-namespace shell {
-
-// Child processes call this to establish the connection to the shell and obtain
-// the ShellClientRequest. Once the connection has been established |callback|
-// is run. ChildProcessMain() returns once the the callback completes.
-using RunCallback = base::Callback<void(mojom::ShellClientRequest)>;
-void ChildProcessMain(const RunCallback& callback);
-
-}  // namespace shell
-}  // namespace mojo
-
-#endif  // MOJO_SHELL_RUNNER_HOST_CHILD_PROCESS_BASE_H_