Move shell service to toplevel shell namespace

services/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 SERVICES_SHELL_RUNNER_HOST_MACH_BROKER_H_
 #define SERVICES_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();
 
@@ skipping 17 matching lines @@
 
  private:
   MachBroker();
   ~MachBroker();
   friend struct base::DefaultSingletonTraits<MachBroker>;
 
   base::MachPortBroker broker_;
 };
 
 }  // namespace shell
-}  // namespace mojo
 
 #endif  // SERVICES_SHELL_RUNNER_HOST_MACH_BROKER_H_