Move some XDG code from chrome to base.

chrome/chrome.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': {
     'chromium_code': 1,
 
     'variables': {
       'version_py_path': 'tools/build/version.py',
@@ skipping 680 matching lines @@
         'common/win_safe_util.h',
         'common/worker_messages.h',
         'common/worker_messages_internal.h',
         'common/worker_thread_ticker.cc',
         'common/worker_thread_ticker.h',
         'common/x11_util.cc',
         'common/x11_util.h',
         'common/x11_util_internal.h',
         'common/zip.cc',  # Requires zlib directly.
         'common/zip.h',
-        'third_party/xdg_user_dirs/xdg_user_dir_lookup.cc',
       ],
       'direct_dependent_settings': {
         'include_dirs': [
           '..',
         ],
       },
       'export_dependent_settings': [
         '../app/app.gyp:app_base',
       ],
       'conditions': [
         ['OS=="linux"', {
           'dependencies': [
             '../build/linux/system.gyp:gtk',
           ],
           'export_dependent_settings': [
             '../third_party/sqlite/sqlite.gyp:sqlite',
           ],
           'link_settings': {
             'libraries': [
               '-lX11',
               '-lXrender',
               '-lXext',
             ],
           },
-        }, { # else: 'OS!="linux"'
-          'sources!': [
-            'third_party/xdg_user_dirs/xdg_user_dir_lookup.cc',
-          ],
-        }],
+        },],
         ['OS=="linux" and selinux==1', {
           'dependencies': [
             '../build/linux/system.gyp:selinux',
           ],
         }],
         ['OS=="win"', {
           'include_dirs': [
             'third_party/wtl/include',
           ],
         }, { # else: OS != "win"
@@ skipping 6229 matching lines @@
       ]
     }],
   ],  # 'conditions'
 }
 
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