Remove Windows snapshot code.

ui/snapshot/snapshot.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,
   },
   'targets': [
     {
@@ skipping 11 matching lines @@
       ],
       'sources': [
         'snapshot.h',
         'snapshot_android.cc',
         'snapshot_async.cc',
         'snapshot_async.h',
         'snapshot_aura.cc',
         'snapshot_export.h',
         'snapshot_ios.mm',
         'snapshot_mac.mm',
-        'snapshot_win.cc',
-        'snapshot_win.h',
       ],
       'include_dirs': [
         '..',
       ],
       'conditions': [
         ['use_aura==1 or OS=="android"', {
           'dependencies': [
             '../../cc/cc.gyp:cc',
             '../../gpu/gpu.gyp:command_buffer_common',
           ],
@@ skipping 42 matching lines @@
         }],
         # See http://crbug.com/162998#c4 for why this is needed.
         ['OS=="linux" and use_allocator!="none"', {
           'dependencies': [
             '../../base/allocator/allocator.gyp:allocator',
           ],
         }],
       ],
     },
   ],
-  'conditions': [
-    ['OS=="win"', {
-      'targets': [
-        {
-          'target_name': 'snapshot_test_support',
-          'type': 'static_library',
-          'sources': [
-            'test/snapshot_desktop.h',
-            'test/snapshot_desktop_win.cc',
-          ],
-          'dependencies': [
-            'snapshot',
-          ],
-          'include_dirs': [
-            '../..',
-          ],
-        },
-      ],
-    }],
-  ],
 }