Move mojo\shell to services\shell

mojo/shell/runner/host/mach_broker.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_MACH_BROKER_H_
-#define MOJO_SHELL_RUNNER_HOST_MACH_BROKER_H_
-
-#include "base/mac/mach_port_broker.h"
-
-namespace base {
-template <typename T> struct DefaultSingletonTraits;
-}
-
-namespace mojo {
-namespace shell {
-
-// A global singleton |MachBroker| is used by the shell to provide access to
-// Mach task ports for shell out-of-process applications.
-class MachBroker {
- public:
-  // Sends the task port of the current process to the parent over Mach IPC.
-  // For use in child processes.
-  static void SendTaskPortToParent();
-
-  // Returns the global |MachBroker|. For use in the shell.
-  static MachBroker* GetInstance();
-
-  // Registers |pid| with a MACH_PORT_NULL task port in the port provider. A
-  // child's pid must be registered before the broker will accept a task port
-  // from that child.
-  // Callers MUST acquire the lock given by GetLock() before calling this method
-  // (and release the lock afterwards).
-  void ExpectPid(base::ProcessHandle pid);
-
-  // Removes |pid| from the port provider.
-  // Callers MUST acquire the lock given by GetLock() before calling this method
-  // (and release the lock afterwards).
-  void RemovePid(base::ProcessHandle pid);
-
-  base::Lock& GetLock() { return broker_.GetLock(); }
-  base::PortProvider* port_provider() { return &broker_; }
-
- private:
-  MachBroker();
-  ~MachBroker();
-  friend struct base::DefaultSingletonTraits<MachBroker>;
-
-  base::MachPortBroker broker_;
-};
-
-}  // namespace shell
-}  // namespace mojo
-
-#endif  // MOJO_SHELL_RUNNER_HOST_MACH_BROKER_H_