[StorageMonitor] Handle EjectDevice call for MTP devices

chrome/browser/storage_monitor/image_capture_device.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_IMAGE_CAPTURE_DEVICE_H_
 #define CHROME_BROWSER_STORAGE_MONITOR_IMAGE_CAPTURE_DEVICE_H_
 
 #import <Foundation/Foundation.h>
 #import <ImageCaptureCore/ImageCaptureCore.h>
 
@@ skipping 50 matching lines @@
   base::scoped_nsobject<ICCameraDevice> camera_;
   base::WeakPtr<ImageCaptureDeviceListener> listener_;
   bool closing_;
 }
 
 - (id)initWithCameraDevice:(ICCameraDevice*)cameraDevice;
 - (void)setListener:(base::WeakPtr<ImageCaptureDeviceListener>)listener;
 - (void)open;
 - (void)close;
 
+- (void)eject;
+
 // Download the given file |name| to the provided |local_path|. Completion
 // notice will be sent to the listener's DownloadedFile method. The name
 // should be of the same form as those sent to the listener's ItemAdded method.
 - (void)downloadFile:(const std::string&)name
            localPath:(const base::FilePath&)localPath;
 
 @end
 
 #endif  // CHROME_BROWSER_STORAGE_MONITOR_IMAGE_CAPTURE_DEVICE_H_