Abort SandboxedUnpacker::RewriteImageFiles on browser shutdown

chrome/browser/extensions/sandboxed_unpacker.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_EXTENSIONS_SANDBOXED_UNPACKER_H_
 #define CHROME_BROWSER_EXTENSIONS_SANDBOXED_UNPACKER_H_
 
 #include <string>
 
 #include "base/files/file_path.h"
@@ skipping 116 matching lines @@
     ERROR_SAVING_MANIFEST_JSON,
 
     // SandboxedUnpacker::RewriteImageFiles()
     COULD_NOT_READ_IMAGE_DATA_FROM_DISK,
     DECODED_IMAGES_DO_NOT_MATCH_THE_MANIFEST,
     INVALID_PATH_FOR_BROWSER_IMAGE,
     ERROR_REMOVING_OLD_IMAGE_FILE,
     INVALID_PATH_FOR_BITMAP_IMAGE,
     ERROR_RE_ENCODING_THEME_IMAGE,
     ERROR_SAVING_THEME_IMAGE,
+    ABORTED_DUE_TO_SHUTDOWN,
 
     // SandboxedUnpacker::RewriteCatalogFiles()
     COULD_NOT_READ_CATALOG_DATA_FROM_DISK,
     INVALID_CATALOG_DATA,
     INVALID_PATH_FOR_CATALOG,
     ERROR_SERIALIZING_CATALOG,
     ERROR_SAVING_CATALOG,
 
     NUM_FAILURE_REASONS
   };
@@ skipping 86 matching lines @@
   // when calling Extenion::Create() by the crx installer.
   int creation_flags_;
 
   // Sequenced task runner where file I/O operations will be performed at.
   scoped_refptr<base::SequencedTaskRunner> unpacker_io_task_runner_;
 };
 
 }  // namespace extensions
 
 #endif  // CHROME_BROWSER_EXTENSIONS_SANDBOXED_UNPACKER_H_