Remove sandbox on Windows.

content/content_tests.gypi

 # Copyright (c) 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.
 
 {
   'variables': {
     'layouttest_support_content_sources': [
       'public/test/layouttest_support.h',
       'public/test/nested_message_pump_android.cc',
       'public/test/nested_message_pump_android.h',
@@ skipping 915 matching lines @@
             'destination': '<(SHARED_INTERMEDIATE_DIR)/webkit',
             'files': [
               'shell/resources/missingImage.png',
               'shell/resources/textAreaResizeCorner.png',
             ],
           }],
         }],
         ['OS == "win"', {
           'dependencies': [
             '../sandbox/sandbox.gyp:sandbox',
-            'content.gyp:sandbox_helper_win',
           ],
         }],
         ['enable_webrtc==1', {
           'sources': [
             'renderer/media/mock_data_channel_impl.cc',
             'renderer/media/mock_data_channel_impl.h',
             'renderer/media/mock_media_stream_dispatcher.cc',
             'renderer/media/mock_media_stream_dispatcher.h',
             'renderer/media/mock_peer_connection_impl.cc',
             'renderer/media/mock_peer_connection_impl.h',
@@ skipping 1269 matching lines @@
                   'content_unittests_apk.isolate',
                 ],
               },
             ],
           },
         ],
       ],
     }],
   ],
 }