Install from disk image: eject original disk image volume and trash disk image file

chrome/browser/mac/install_from_dmg.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_MAC_INSTALL_FROM_DMG_H_
 #define CHROME_BROWSER_MAC_INSTALL_FROM_DMG_H_
 #pragma once
 
+#include <string>
+
 // If the application is running from a read-only disk image, prompts the user
 // to install it to the hard drive.  If the user approves, the application
 // will be installed and launched, and MaybeInstallFromDiskImage will return
 // true.  In that case, the caller must exit expeditiously.
 bool MaybeInstallFromDiskImage();
 
+// Given a BSD device name of the form "diskN" or "diskNsM" as used by IOKit,
+// where the device name corresponds to a disk image, unmounts all filesystems
+// on that disk image ("diskN", even if "diskNsM" was supplied), "ejects" the
+// disk image from the system, and places the disk image file into the Trash.
+// If at any step an error occurs, further processing is aborted.
+void EjectAndTrashDiskImage(const std::string& dmg_bsd_device_name);
+
 #endif  // CHROME_BROWSER_MAC_INSTALL_FROM_DMG_H_