Set drive as the default download folder

chrome/chrome_tests_unit.gypi

 # Copyright 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.
 {
   'targets': [
     {
       # This target contains mocks and test utilities that don't belong in
       # production libraries but are used by more than one test executable.
       'target_name': 'test_support_common',
       'type': 'static_library',
@@ skipping 2642 matching lines @@
           'conditions': [
             ['gtest_target_type == "shared_library"', {
               'dependencies': [
                 '../testing/android/native_test.gyp:native_test_native_code',
               ],
             }],
           ],
         }],  # OS == android
         ['OS!="android" and OS!="ios" and chromeos==0 and configuration_policy==1', {
           'sources': [
-            'browser/download/download_dir_policy_handler_unittest.cc',
             'browser/net/disk_cache_dir_policy_handler_unittest.cc',
           ],
         }],
+        ['OS!="android" and OS!="ios" and configuration_policy==1', {
+          'sources': [
+            'browser/download/download_dir_policy_handler_unittest.cc'
+          ],
+        }],
         ['enable_printing!=1', {
           'sources/': [
             # No need for service process.
             ['exclude', '^browser/service/'],
             ['exclude', '^common/service_'],
             ['exclude', '^service/'],
           ],
         }],
         ['enable_themes==0', {
           'sources!': [
@@ skipping 234 matching lines @@
             'browser/ui/app_list/test/fake_profile_store.h',
             'browser/ui/app_list/test/fast_show_pickler_unittest.cc',
             'browser/ui/views/app_list/linux/app_list_linux_unittest.cc',
             'browser/ui/views/app_list/win/app_list_win_unittest.cc',
           ],
         },
       ],
     }],
   ],  # 'conditions'
 }