mojo: fix little bug in DynamicServiceLoader/Runner

mojo/shell/in_process_dynamic_service_runner.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_SHELL_IN_PROCESS_DYNAMIC_SERVICE_RUNNER_H_
 #define MOJO_SHELL_IN_PROCESS_DYNAMIC_SERVICE_RUNNER_H_
 
 #include "base/callback.h"
 #include "base/files/file_path.h"
 #include "base/macros.h"
@@ skipping 22 matching lines @@
  private:
   // |base::DelegateSimpleThread::Delegate| method:
   virtual void Run() OVERRIDE;
 
   KeepAlive keep_alive_;
   base::FilePath app_path_;
   ScopedMessagePipeHandle service_handle_;
   base::Callback<bool(void)> app_completed_callback_runner_;
 
   base::ScopedNativeLibrary app_library_;
-  base::DelegateSimpleThread thread_;
+  scoped_ptr<base::DelegateSimpleThread> thread_;
 
   DISALLOW_COPY_AND_ASSIGN(InProcessDynamicServiceRunner);
 };
 
 typedef DynamicServiceRunnerFactoryImpl<InProcessDynamicServiceRunner>
     InProcessDynamicServiceRunnerFactory;
 
 }  // namespace shell
 }  // namespace mojo
 
 #endif  // MOJO_SHELL_IN_PROCESS_DYNAMIC_SERVICE_RUNNER_H_