Refine StorageMonitor storage device getter

chrome/browser/storage_monitor/storage_monitor_win.h

 // Copyright (c) 2012 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_STORAGE_MONITOR_STORAGE_MONITOR_WIN_H_
 #define CHROME_BROWSER_STORAGE_MONITOR_STORAGE_MONITOR_WIN_H_
 
 #include "base/basictypes.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
@@ skipping 28 matching lines @@
                                      StorageInfo* device_info) const OVERRIDE;
   virtual bool GetMTPStorageInfoFromDeviceId(
       const std::string& storage_device_id,
       string16* device_location,
       string16* storage_object_id) const OVERRIDE;
 
   virtual void EjectDevice(
       const std::string& device_id,
       base::Callback<void(EjectStatus)> callback) OVERRIDE;
 
+  virtual std::vector<StorageInfo> GetAllAvailableStorages() const OVERRIDE;
+
  private:
   class PortableDeviceNotifications;
   friend class test::TestStorageMonitorWin;
 
   // To support unit tests, this constructor takes |volume_mount_watcher| and
   // |portable_device_watcher| objects. These params are either constructed in
   // unit tests or in StorageMonitorWin::Create() function.
   StorageMonitorWin(VolumeMountWatcherWin* volume_mount_watcher,
                     PortableDeviceWatcherWin* portable_device_watcher);
 
@@ skipping 24 matching lines @@
   // The portable device watcher, used to manage media transfer protocol
   // devices.
   scoped_ptr<PortableDeviceWatcherWin> portable_device_watcher_;
 
   DISALLOW_COPY_AND_ASSIGN(StorageMonitorWin);
 };
 
 }  // namespace chrome
 
 #endif  // CHROME_BROWSER_STORAGE_MONITOR_STORAGE_MONITOR_WIN_H_