Fix the archive_build step for Win x64.

scripts/slave/recipe_modules/chromium/api.py

 # Copyright 2013 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.
 
 import re
 
 from recipe_engine import recipe_api
 from recipe_engine import util as recipe_util
 
 class TestLauncherFilterFileInputPlaceholder(recipe_util.InputPlaceholder):
@@ skipping 634 matching lines @@
     fake_factory_properties = {
         'gclient_env': self.c.gyp_env.as_jsonish(),
         'gs_bucket': 'gs://%s' % gs_bucket,
     }
     if gs_acl is not None:
       fake_factory_properties['gs_acl'] = gs_acl
     if self.c.TARGET_PLATFORM == 'android':
       fake_factory_properties['target_os'] = 'android'
 
     args = [
-        '--target', self.c.BUILD_CONFIG,
+        '--target', self.c.build_config_fs,
         '--factory-properties', self.m.json.dumps(fake_factory_properties),
     ]
     if self.build_properties:
       args += [
         '--build-properties', self.m.json.dumps(self.build_properties),
       ]
     if mode:
       args.extend(['--mode', mode])
     self.m.python(
       step_name,
@@ skipping 44 matching lines @@
       }))
 
   def get_annotate_by_test_name(self, test_name):
     return 'graphing'
 
   def download_lto_plugin(self):
     return self.m.python(
         name='download LTO plugin',
         script=self.m.path['checkout'].join(
             'build', 'download_gold_plugin.py'))