Attempt 2 at:...

app/app.gyp

 # Copyright (c) 2009 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.
 
 {
   'variables': {
     # TODO: remove this helper when we have loops in GYP
     'apply_locales_cmd': ['python', '../chrome/tools/build/apply_locales.py',],
     'chromium_code': 1,
   },
@@ skipping 97 matching lines @@
         'gfx/gtk_util.h',
         'gfx/icon_util.cc',
         'gfx/icon_util.h',
         'gfx/insets.h',
         'gfx/native_widget_types.h',
         'gfx/native_widget_types_gtk.cc',
         'gfx/native_theme_win.cc',
         'gfx/native_theme_win.h',
         'gfx/gtk_native_view_id_manager.cc',
         'gfx/gtk_native_view_id_manager.h',
+        'gfx/path.cc',
         'gfx/path_gtk.cc',
         'gfx/path_win.cc',
         'gfx/path.h',
         'gfx/skbitmap_operations.cc',
         'gfx/skbitmap_operations.h',
         'gfx/text_elider.cc',
         'gfx/text_elider.h',
         'gtk_dnd_util.cc',
         'gtk_dnd_util.h',
         'l10n_util.cc',
@@ skipping 290 matching lines @@
       ],
     },
   ],
 }
 
 # Local Variables:
 # tab-width:2
 # indent-tabs-mode:nil
 # End:
 # vim: set expandtab tabstop=2 shiftwidth=2: