Add an exception wrapper to the WindowProc functions so...

base/base.gypi

 # Copyright (c) 2011 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': {
       'base_target': 0,
     },
     'target_conditions': [
@@ skipping 313 matching lines @@
           'win/scoped_gdi_object.h',
           'win/scoped_handle.h',
           'win/scoped_hdc.h',
           'win/scoped_hglobal.h',
           'win/scoped_variant.cc',
           'win/scoped_variant.h',
           'win/win_util.cc',
           'win/win_util.h',
           'win/windows_version.cc',
           'win/windows_version.h',
+          'win/wrapped_window_proc.cc',
+          'win/wrapped_window_proc.h',
           'nix/xdg_util.h',
           'nix/xdg_util.cc',
         ],
         'include_dirs': [
           '..',
         ],
         # These warnings are needed for the files in third_party\dmg_fp.
         'msvs_disabled_warnings': [
           4244, 4554, 4018, 4102,
         ],
@@ skipping 403 matching lines @@
             'third_party/xdg_mime/xdgmimemagic.c',
             'third_party/xdg_mime/xdgmimemagic.h',
             'third_party/xdg_mime/xdgmimeparent.c',
             'third_party/xdg_mime/xdgmimeparent.h',
           ],
         },
       ],
     }],
   ],
 }