Add a header when fetching pages under the DMServer URL.

components/components_tests.gyp

 # Copyright (c) 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.
 
 {
   'variables': {
     # This turns on e.g. the filename-based detection of which
     # platforms to include source files on (e.g. files ending in
     # _mac.h or _mac.cc are only compiled on MacOSX).
     'chromium_code': 1,
@@ skipping 174 matching lines @@
             ],
             'link_settings': {
                 'ldflags': ['-rdynamic'],
             },
             }],
             ['configuration_policy==1', {
               'dependencies': [
                 'components.gyp:policy_component_test_support',
               ],
               'sources': [
+                'policy/core/browser/policy_header_io_helper_unittest.cc',
                 'policy/core/common/async_policy_provider_unittest.cc',
                 'policy/core/common/cloud/cloud_policy_client_unittest.cc',
                 'policy/core/common/cloud/cloud_policy_core_unittest.cc',
                 'policy/core/common/cloud/cloud_policy_manager_unittest.cc',
                 'policy/core/common/cloud/cloud_policy_refresh_scheduler_unittest.cc',
                 'policy/core/common/cloud/cloud_policy_service_unittest.cc',
                 'policy/core/common/cloud/cloud_policy_validator_unittest.cc',
                 'policy/core/common/cloud/component_cloud_policy_service_unittest.cc',
                 'policy/core/common/cloud/component_cloud_policy_store_unittest.cc',
                 'policy/core/common/cloud/component_cloud_policy_updater_unittest.cc',
@@ skipping 151 matching lines @@
               'dependencies': [
                 '../base/allocator/allocator.gyp:allocator',
               ],
             }],
           ],
         },
       ],
     }],
   ],
 }