file_manager: Rename file_watcher_extensions.h to file_watcher.h

chrome/browser/chromeos/extensions/file_manager/file_watcher_extensions.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 CHROME_BROWSER_CHROMEOS_EXTENSIONS_FILE_MANAGER_FILE_WATCHER_EXTENSIONS_H_
-#define CHROME_BROWSER_CHROMEOS_EXTENSIONS_FILE_MANAGER_FILE_WATCHER_EXTENSIONS_H_
-
-#include <map>
-#include <string>
-
-#include "base/callback_forward.h"
-#include "base/files/file_path.h"
-#include "base/files/file_path_watcher.h"
-#include "base/memory/weak_ptr.h"
-
-namespace file_manager {
-
-// This class is used to remember what extensions are watching |virtual_path|.
-class FileWatcherExtensions {
- public:
-  typedef std::map<std::string, int> ExtensionUsageRegistry;
-  typedef base::Callback<void(bool success)> BoolCallback;
-
-  FileWatcherExtensions(const base::FilePath& virtual_path,
-                        const std::string& extension_id,
-                        bool is_remote_file_system);
-
-  ~FileWatcherExtensions();
-
-  void AddExtension(const std::string& extension_id);
-
-  void RemoveExtension(const std::string& extension_id);
-
-  const ExtensionUsageRegistry& extensions() const { return extensions_; }
-
-  int ref_count() const { return ref_count_; }
-
-  const base::FilePath& virtual_path() const { return virtual_path_; }
-
-  // Starts a file watch at |local_path|. |file_watcher_callback| will be
-  // called when changes are notified.
-  //
-  // |callback| will be called with true, if the file watch is started
-  // successfully, or false if failed. |callback| must not be null.
-  void Watch(const base::FilePath& local_path,
-             const base::FilePathWatcher::Callback& file_watcher_callback,
-             const BoolCallback& callback);
-
- private:
-  // Called when a FilePathWatcher is created and started.
-  // |file_path_watcher| is NULL, if the watcher wasn't started successfully.
-  void OnWatcherStarted(const BoolCallback& callback,
-                        base::FilePathWatcher* file_path_watcher);
-
-  base::FilePathWatcher* file_watcher_;
-  base::FilePath local_path_;
-  base::FilePath virtual_path_;
-  ExtensionUsageRegistry extensions_;
-  int ref_count_;
-  bool is_remote_file_system_;
-
-  // Note: This should remain the last member so it'll be destroyed and
-  // invalidate the weak pointers before any other members are destroyed.
-  base::WeakPtrFactory<FileWatcherExtensions> weak_ptr_factory_;
-};
-
-}  // namespace file_manager
-
-#endif  // CHROME_BROWSER_CHROMEOS_EXTENSIONS_FILE_MANAGER_FILE_WATCHER_EXTENSIONS_H_