Remove sandbox on Windows.

content/content.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': {
     'chromium_code': 1,  # Use higher warning level.
     'chromium_enable_vtune_jit_for_v8%': 0,  # enable the vtune support for V8 engine.
     'directxsdk_exists': '<!pymod_do_main(dir_exists ../third_party/directxsdk)',
   },
@@ skipping 73 matching lines @@
       'includes': [
         '../mojo/public/mojo_application_manifest.gypi',
       ],
     },
   ],
   'includes': [
     '../build/win_precompile.gypi',
     'content_resources.gypi',
   ],
   'conditions': [
-    ['OS == "win"', {
-      'targets': [
-        {
-          # GN: //content:sandbox_helper_win
-          'target_name': 'sandbox_helper_win',
-          'type': 'static_library',
-          'include_dirs': [
-            '..',
-          ],
-          'dependencies': [
-            '../sandbox/sandbox.gyp:sandbox',
-          ],
-          'sources': [
-            'app/sandbox_helper_win.cc',
-            'public/app/sandbox_helper_win.h',
-          ],
-        }
-      ],
-    }],
     # In component mode, we build all of content as a single DLL.
     # However, in the static mode, we need to build content as multiple
     # targets in order to prevent dependencies from getting introduced
     # upstream unnecessarily (e.g., content_renderer depends on allocator
     # and chrome_exe depends on content_common but we don't want
     # chrome_exe to have to depend on allocator).
     ['component=="static_library"', {
       'target_defines': [
         'COMPILE_CONTENT_STATICALLY',
       ],
@@ skipping 580 matching lines @@
           },
           'includes': [
             '../build/android/copy_ex.gypi',
             '../build/android/v8_external_startup_data_arch_suffix.gypi',
           ],
         },
       ],
     }],  # OS == "android"
   ],
 }