[Mac] Use an AppleEvent to tell the Finder to open downloaded items, rather than NSWorkspace.

base/base.gypi

 # Copyright (c) 2010 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,
       'base_extra_target': 0,
     },
@@ skipping 166 matching lines @@
           'ref_counted.cc',
           'ref_counted.h',
           'ref_counted_memory.cc',
           'ref_counted_memory.h',
           'registry.cc',
           'registry.h',
           'resource_util.cc',
           'resource_util.h',
           'safe_strerror_posix.cc',
           'safe_strerror_posix.h',
+          'scoped_aedesc.h',
           'scoped_bstr_win.cc',
           'scoped_bstr_win.h',
           'scoped_callback_factory.h',
           'scoped_cftyperef.h',
           'scoped_comptr_win.h',
           'scoped_handle.h',
           'scoped_handle_win.h',
           'scoped_nsautorelease_pool.h',
           'scoped_nsautorelease_pool.mm',
           'scoped_nsdisable_screen_updates.h',
@@ skipping 127 matching lines @@
               'sources!': [
                 # Not automatically excluded by the *linux.cc rules.
                 'gtk_util.cc',
                 'gtk_util.h',
                 'linux_util.cc',
                 'setproctitle_linux.c',
                 'setproctitle_linux.h',
               ],
             },
           ],
+          [ 'OS != "mac"', {
+              'sources!': [
+                'scoped_aedesc.h'
+              ],
+          }],
           # For now, just test the *BSD platforms enough to exclude them.
           # Subsequent changes will include them further.
           [ 'OS != "freebsd"', {
               'sources/': [ ['exclude', '_freebsd\\.cc$'] ],
             },
           ],
           [ 'OS != "openbsd"', {
               'sources/': [ ['exclude', '_openbsd\\.cc$'] ],
             },
           ],
@@ skipping 400 matching lines @@
             'third_party/xdg_mime/xdgmimemagic.c',
             'third_party/xdg_mime/xdgmimemagic.h',
             'third_party/xdg_mime/xdgmimeparent.c',
             'third_party/xdg_mime/xdgmimeparent.h',
           ],
         },
       ],
     }],
   ],
 }