Remove silly uses of ResourceContext that unnecessarily violate the Law of Demeter.

chrome/browser/extensions/data_deleter.h

 // Copyright (c) 2011 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_DATA_DELETER_H_
 #define CHROME_BROWSER_EXTENSIONS_DATA_DELETER_H_
 
 #include "base/file_path.h"
 #include "base/memory/ref_counted.h"
 #include "base/sequenced_task_runner_helpers.h"
 #include "base/string16.h"
 #include "content/public/browser/browser_thread.h"
 #include "googleurl/src/gurl.h"
 
+namespace appcache {
+class AppCacheService;
+}
+
 namespace content {
 class DOMStorageContext;
 class IndexedDBContext;
-class ResourceContext;
 }
 
 namespace fileapi {
 class FileSystemContext;
 }
 
 namespace net {
 class URLRequestContextGetter;
 }
 
@@ skipping 44 matching lines @@
   // webkit thread.
   void DeleteIndexedDBOnWebkitThread(
       scoped_refptr<content::IndexedDBContext> indexed_db_context);
 
   // Deletes filesystem files for the extension. May only be called on the
   // file thread.
   void DeleteFileSystemOnFileThread();
 
   // Deletes appcache files for the extension. May only be called on the IO
   // thread.
-  void DeleteAppcachesOnIOThread(content::ResourceContext* resource_context);
+  void DeleteAppcachesOnIOThread(appcache::AppCacheService* appcache_service);
 
   // The ID of the extension being deleted.
   const std::string extension_id_;
 
   // The database context for deleting the database.
   scoped_refptr<webkit_database::DatabaseTracker> database_tracker_;
 
   // Provides access to the request context.
   scoped_refptr<net::URLRequestContextGetter> extension_request_context_;
 
   // The origin of the extension/app for which we're going to clear data.
   GURL storage_origin_;
 
   // The security origin identifier for which we're deleting stuff.
   string16 origin_id_;
 
   scoped_refptr<fileapi::FileSystemContext> file_system_context_;
 
   // If non-empty, the extension we're deleting is an isolated app, and this
   // is its directory which we should delete.
   FilePath isolated_app_path_;
 
   DISALLOW_COPY_AND_ASSIGN(DataDeleter);
 };
 
 }  // namespace extensions
 
 #endif  // CHROME_BROWSER_EXTENSIONS_DATA_DELETER_H_