Fix HidService lifetime issues

chrome/browser/extensions/api/chrome_extensions_api_client.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 CHROME_BROWSER_EXTENSIONS_API_CHROME_EXTENSIONS_API_CLIENT_H_
 #define CHROME_BROWSER_EXTENSIONS_API_CHROME_EXTENSIONS_API_CLIENT_H_
 
 #include "base/compiler_specific.h"
-#include "base/memory/scoped_ptr.h"
 #include "extensions/browser/api/extensions_api_client.h"
 
 namespace extensions {
 
 // Extra support for extensions APIs in Chrome.
 class ChromeExtensionsAPIClient : public ExtensionsAPIClient {
  public:
   ChromeExtensionsAPIClient();
   virtual ~ChromeExtensionsAPIClient();
 
   // ExtensionsApiClient implementation.
   virtual void AddAdditionalValueStoreCaches(
       content::BrowserContext* context,
       const scoped_refptr<SettingsStorageFactory>& factory,
       const scoped_refptr<ObserverListThreadSafe<SettingsObserver> >& observers,
       std::map<settings_namespace::Namespace, ValueStoreCache*>* caches)
       OVERRIDE;
   virtual AppViewGuestDelegate* CreateAppViewGuestDelegate() const OVERRIDE;
   virtual WebViewGuestDelegate* CreateWebViewGuestDelegate(
       WebViewGuest* web_view_guest) const OVERRIDE;
   virtual WebViewPermissionHelperDelegate*
       CreateWebViewPermissionHelperDelegate(
           WebViewPermissionHelper* web_view_permission_helper) const OVERRIDE;
-  virtual device::HidService* GetHidService() OVERRIDE;
   virtual void RegisterGuestViewTypes() OVERRIDE;
 
  private:
-  scoped_ptr<device::HidService> hid_service_;
-
   DISALLOW_COPY_AND_ASSIGN(ChromeExtensionsAPIClient);
 };
 
 }  // namespace extensions
 
 #endif  // CHROME_BROWSER_EXTENSIONS_API_CHROME_EXTENSIONS_API_CLIENT_H_