Files.app: Start to use DeviceEventRouter.

chrome/browser/chromeos/file_manager/volume_manager_observer.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_FILE_MANAGER_VOLUME_MANAGER_OBSERVER_H_
 #define CHROME_BROWSER_CHROMEOS_FILE_MANAGER_VOLUME_MANAGER_OBSERVER_H_
 
 #include <string>
 
 #include "chromeos/dbus/cros_disks_client.h"
@@ skipping 24 matching lines @@
 
   // Fired when a volume is mounted.
   virtual void OnVolumeMounted(chromeos::MountError error_code,
                                const VolumeInfo& volume_info,
                                bool is_remounting) = 0;
 
   // Fired when a volume is unmounted.
   virtual void OnVolumeUnmounted(chromeos::MountError error_code,
                                  const VolumeInfo& volume_info) = 0;
 
-  // Fired when a device is hard unplugged.
-  virtual void OnHardUnplugged(const std::string& device_path) = 0;
-
   // Fired when formatting a device is started (or failed to start).
   virtual void OnFormatStarted(
       const std::string& device_path, bool success) = 0;
 
   // Fired when formatting a device is completed (or terminated on error).
   virtual void OnFormatCompleted(
       const std::string& device_path, bool success) = 0;
 };
 
 }  // namespace file_manager
 
 #endif  // CHROME_BROWSER_CHROMEOS_FILE_MANAGER_VOLUME_MANAGER_OBSERVER_H_