Test downloads.download() disallows unsafe headers

chrome/chrome_browser.gypi

 # 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.
 
 {
   'targets': [
     {
       'target_name': 'browser',
       'type': 'static_library',
@@ skipping 990 matching lines @@
         'browser/download/download_completion_blocker.h',
         'browser/download/download_crx_util.cc',
         'browser/download/download_crx_util.h',
         'browser/download/download_crx_util_android.cc',
         'browser/download/download_extensions.cc',
         'browser/download/download_extensions.h',
         'browser/download/download_file_picker.cc',
         'browser/download/download_file_picker.h',
         'browser/download/download_file_picker_chromeos.cc',
         'browser/download/download_file_picker_chromeos.h',
+        'browser/download/download_hidden.cc',
+        'browser/download/download_hidden.h',
         'browser/download/download_history.cc',
         'browser/download/download_history.h',
         'browser/download/download_item_model.cc',
         'browser/download/download_item_model.h',
         'browser/download/download_prefs.cc',
         'browser/download/download_prefs.h',
         'browser/download/download_query.cc',
         'browser/download/download_query.h',
         'browser/download/download_request_infobar_delegate.cc',
         'browser/download/download_request_infobar_delegate.h',
@@ skipping 4452 matching lines @@
           'variables': {
             'jni_gen_dir': 'chrome',
           },
           'includes': [ '../build/jni_generator.gypi' ],
         },
       ],
      },
     ],
   ],
 }