Allow Win64 build of base library even in a Win32 build.

sandbox/win/sandbox_win.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.
 
 {
   'target_defaults': {
     'variables': {
       'sandbox_windows_target': 0,
       'target_arch%': 'ia32',
     },
@@ skipping 319 matching lines @@
     ['OS=="win" and target_arch=="ia32"', {
       'targets': [
         {
           'target_name': 'sandbox_win64',
           'type': 'static_library',
           'variables': {
             'sandbox_windows_target': 1,
             'target_arch': 'x64',
           },
           'dependencies': [
-            '../base/base.gyp:base_nacl_win64',
+            '../base/base.gyp:base_win64',
             '../base/base.gyp:base_static_win64',
           ],
           'configurations': {
             'Common_Base': {
               'msvs_target_platform': 'x64',
             },
           },
           'include_dirs': [
             '../..',
           ],
           'direct_dependent_settings': {
             'include_dirs': [
               'src',
               '../..',
             ],
           },
           'defines': [
             '<@(nacl_win64_defines)',
           ]
         },
       ],
     }],
   ],
 }