Get rid of KeepAlive. Quit shell when all urls run directly by Context are closed.

mojo/shell/out_of_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_OUT_OF_PROCESS_DYNAMIC_SERVICE_RUNNER_H_
 #define MOJO_SHELL_OUT_OF_PROCESS_DYNAMIC_SERVICE_RUNNER_H_
 
 #include "base/callback.h"
 #include "base/files/file_path.h"
 #include "base/macros.h"
 #include "mojo/shell/app_child_process.mojom.h"
 #include "mojo/shell/app_child_process_host.h"
 #include "mojo/shell/dynamic_service_runner.h"
-#include "mojo/shell/keep_alive.h"
 
 namespace mojo {
 namespace shell {
 
 // An implementation of |DynamicServiceRunner| that loads/runs the given app
 // (from the file system) in a separate process (of its own).
 class OutOfProcessDynamicServiceRunner
     : public DynamicServiceRunner,
       public AppChildControllerClient {
  public:
   explicit OutOfProcessDynamicServiceRunner(Context* context);
   virtual ~OutOfProcessDynamicServiceRunner();
 
   // |DynamicServiceRunner| method:
   virtual void Start(const base::FilePath& app_path,
                      ScopedMessagePipeHandle service_handle,
                      const base::Closure& app_completed_callback) OVERRIDE;
 
  private:
   // |AppChildControllerClient| method:
   virtual void AppCompleted(int32_t result) OVERRIDE;
 
   Context* const context_;
 
-  KeepAlive keep_alive_;
   base::FilePath app_path_;
   ScopedMessagePipeHandle service_handle_;
   base::Closure app_completed_callback_;
 
   scoped_ptr<AppChildProcessHost> app_child_process_host_;
 
   DISALLOW_COPY_AND_ASSIGN(OutOfProcessDynamicServiceRunner);
 };
 
 typedef DynamicServiceRunnerFactoryImpl<OutOfProcessDynamicServiceRunner>
     OutOfProcessDynamicServiceRunnerFactory;
 
 }  // namespace shell
 }  // namespace mojo
 
 #endif  // MOJO_SHELL_OUT_OF_PROCESS_DYNAMIC_SERVICE_RUNNER_H_