ApplicationManager: Use callback to get notified on application shutdown.

shell/context.h

 // Copyright 2013 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 SHELL_CONTEXT_H_
 #define SHELL_CONTEXT_H_
 
 #include <string>
 
 #include "base/macros.h"
@@ skipping 49 matching lines @@
       const std::string& service_name);
 
   TaskRunners* task_runners() { return task_runners_.get(); }
   ApplicationManager* application_manager() { return &application_manager_; }
   URLResolver* url_resolver() { return &url_resolver_; }
 
  private:
   class NativeViewportApplicationLoader;
 
   // ApplicationManager::Delegate overrides.
-  void OnApplicationError(const GURL& url) override;
   GURL ResolveURL(const GURL& url) override;
   GURL ResolveMappings(const GURL& url) override;
 
   // ProcessDelegate implementation.
   void OnShutdownComplete() override;
 
+  void OnApplicationEnd(const GURL& url);
+
   std::set<GURL> app_urls_;
   scoped_ptr<TaskRunners> task_runners_;
   scoped_ptr<ExternalApplicationListener> listener_;
   ApplicationManager application_manager_;
   URLResolver url_resolver_;
   GURL shell_file_root_;
   GURL command_line_cwd_;
 
   DISALLOW_COPY_AND_ASSIGN(Context);
 };
 
 }  // namespace shell
 }  // namespace mojo
 
 #endif  // SHELL_CONTEXT_H_