Move small c/b/extensions classes into extensions namespace no.2

chrome/browser/extensions/extension_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_EXTENSION_DATA_DELETER_H_
-#define CHROME_BROWSER_EXTENSIONS_EXTENSION_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 content {
-class DOMStorageContext;
-class IndexedDBContext;
-class ResourceContext;
-}
-
-namespace fileapi {
-class FileSystemContext;
-}
-
-namespace net {
-class URLRequestContextGetter;
-}
-
-namespace webkit_database {
-class DatabaseTracker;
-}
-
-class Profile;
-
-// A helper class that takes care of removing local storage, databases and
-// cookies for a given extension. This is used by
-// ExtensionService::ClearExtensionData() upon uninstalling an extension.
-class ExtensionDataDeleter
-  : public base::RefCountedThreadSafe<
-        ExtensionDataDeleter, content::BrowserThread::DeleteOnUIThread> {
- public:
-  // Starts removing data. The extension should not be running when this is
-  // called. Cookies are deleted on the current thread, local storage and
-  // databases/settings are deleted asynchronously on the webkit and file
-  // threads, respectively. This function must be called from the UI thread.
-  static void StartDeleting(
-      Profile* profile,
-      const std::string& extension_id,
-      const GURL& storage_origin,
-      bool is_storage_isolated);
-
- private:
-  friend struct content::BrowserThread::DeleteOnThread<
-      content::BrowserThread::UI>;
-  friend class base::DeleteHelper<ExtensionDataDeleter>;
-
-  ExtensionDataDeleter(
-      Profile* profile,
-      const std::string& extension_id,
-      const GURL& storage_origin,
-      bool is_storage_isolated);
-  ~ExtensionDataDeleter();
-
-  // Deletes the cookies for the extension. May only be called on the io
-  // thread.
-  void DeleteCookiesOnIOThread();
-
-  // Deletes the database for the extension. May only be called on the file
-  // thread.
-  void DeleteDatabaseOnFileThread();
-
-  // Deletes indexed db files for the extension. May only be called on the
-  // 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);
-
-  // 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(ExtensionDataDeleter);
-};
-
-#endif  // CHROME_BROWSER_EXTENSIONS_EXTENSION_DATA_DELETER_H_