Factor out window creation into base::WindowImpl. This class will be used in...

base/base.gyp

 # Copyright (c) 2009 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,
   },
   'includes': [
     '../build/common.gypi',
@@ skipping 428 matching lines @@
             },
           },
           {  # else: OS != "mac"
             'sources!': [
               'crypto/cssm_init.cc',
               'crypto/cssm_init.h',
             ],
           }
         ],
         [ 'OS == "win"', {
+            'include_dirs': [
+              '../chrome/third_party/wtl/include',
+            ],
             'sources/': [ ['exclude', '_(linux|mac|posix|chromeos)\\.cc$'],
                           ['exclude', '\\.mm?$' ] ],
+            'sources': [
+              'window_impl.cc',
+              'window_impl.h',
+            ],
             'sources!': [
               'data_pack.cc',
               'event_recorder_stubs.cc',
               'file_descriptor_shuffle.cc',
               'message_pump_libevent.cc',
               'string16.cc',
             ],
           },
           {  # else: OS != "win"
             'dependencies': ['../third_party/libevent/libevent.gyp:libevent'],
@@ skipping 364 matching lines @@
                 '<@(_outputs)',
               ],
               'message': 'Generating version information',
             },
           ],
         },
       ],
     }],
   ],
 }