Refactoring and tests for the highly undertested file_util::CreateOrUpdateShortcutLink() method.

base/base.gypi

 # 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.
 
 {
   'target_defaults': {
     'variables': {
       'base_target': 0,
     },
     'target_conditions': [
@@ skipping 487 matching lines @@
           'win/scoped_com_initializer.h',
           'win/scoped_comptr.h',
           'win/scoped_gdi_object.h',
           'win/scoped_handle.cc',
           'win/scoped_handle.h',
           'win/scoped_hdc.h',
           'win/scoped_hglobal.h',
           'win/scoped_process_information.cc',
           'win/scoped_process_information.h',
           'win/scoped_select_object.h',
+          'win/shortcut.cc',
+          'win/shortcut.h',
           'win/startup_information.cc',
           'win/startup_information.h',
           'win/scoped_variant.cc',
           'win/scoped_variant.h',
           'win/windows_version.cc',
           'win/windows_version.h',
           'win/win_util.cc',
           'win/win_util.h',
           'win/wrapped_window_proc.cc',
           'win/wrapped_window_proc.h',
@@ skipping 166 matching lines @@
           # Remove all unnecessary files for build_nexe.py to avoid exceeding
           # command-line-string limitation when building NaCl on Windows.
           ['OS == "win" and >(nacl_untrusted_build)==1', {
               'sources/': [ ['exclude', '\\.h$'] ],
           }],
         ],
       }],
     ],
   },
 }