Remove win_util::FormatMessage and FormatLastWin32Error. These were only used...

app/app_base.gypi

 # Copyright (c) 2010 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': {
       'app_base_target': 0,
     },
     'target_conditions': [
@@ skipping 216 matching lines @@
         'throb_animation.cc',
         'throb_animation.h',
         'tween.cc',
         'tween.h',
         'view_prop.cc',
         'view_prop.h',
         'win/drag_source.cc',
         'win/drag_source.h',
         'win/drop_target.cc',
         'win/drop_target.h',
+        'win/hwnd_util.cc',
+        'win/hwnd_util.h',
         'win/iat_patch_function.cc',
         'win/iat_patch_function.h',
         'win/scoped_prop.cc',
         'win/scoped_prop.h',
+        'win/window_impl.cc',
+        'win/window_impl.h',
         'x11_util.cc',
         'x11_util.h',
         'x11_util_internal.h',
         '<(gl_binding_output_dir)/gl_bindings_autogen_gl.cc',
         '<(gl_binding_output_dir)/gl_bindings_autogen_gl.h',
         '<(gl_binding_output_dir)/gl_bindings_autogen_mock.cc',
         '<(gl_binding_output_dir)/gl_bindings_autogen_osmesa.cc',
         '<(gl_binding_output_dir)/gl_bindings_autogen_osmesa.h',
       ],
       # hard_dependency is necessary for this target because it has actions
@@ skipping 200 matching lines @@
           'configurations': {
             'Common_Base': {
               'msvs_target_platform': 'x64',
             },
           },
         },
       ],
     }],
   ],
 }