app_shell: Make renderer run background page JavaScript

apps/shell/shell_extension_system.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 APPS_SHELL_SHELL_EXTENSION_SYSTEM_H_
 #define APPS_SHELL_SHELL_EXTENSION_SYSTEM_H_
 
 #include "base/compiler_specific.h"
 #include "chrome/browser/extensions/extension_system.h"
 #include "extensions/common/one_shot_event.h"
 
 namespace base {
 class FilePath;
 }
 
 namespace content {
 class BrowserContext;
 }
 
 namespace extensions {
 
 class EventRouter;
+class InfoMap;
 class LazyBackgroundTaskQueue;
 class ProcessManager;
 
 // A simplified version of ExtensionSystem for app_shell. Allows
 // app_shell to skip initialization of services it doesn't need.
 class ShellExtensionSystem : public ExtensionSystem {
  public:
   explicit ShellExtensionSystem(content::BrowserContext* browser_context);
   virtual ~ShellExtensionSystem();
 
@@ skipping 23 matching lines @@
   virtual void RegisterExtensionWithRequestContexts(
       const Extension* extension) OVERRIDE;
   virtual void UnregisterExtensionWithRequestContexts(
       const std::string& extension_id,
       const UnloadedExtensionInfo::Reason reason) OVERRIDE;
   virtual const OneShotEvent& ready() const OVERRIDE;
 
  private:
   content::BrowserContext* browser_context_;  // Not owned.
 
+  // Data to be accessed on the IO thread. Must outlive process_manager_.
+  scoped_refptr<InfoMap> info_map_;
+
   scoped_ptr<LazyBackgroundTaskQueue> lazy_background_task_queue_;
   scoped_ptr<EventRouter> event_router_;
   scoped_ptr<ProcessManager> process_manager_;
 
   // Signaled when the extension system has completed its startup tasks.
   OneShotEvent ready_;
 
   DISALLOW_COPY_AND_ASSIGN(ShellExtensionSystem);
 };
 
 }  // namespace extensions
 
 #endif  // APPS_SHELL_SHELL_EXTENSION_SYSTEM_H_