Add GrabWindowSnapshot method to mac_util class. This code is due to dmaclac...

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,
   },
   'targets': [
     {
@@ skipping 568 matching lines @@
         'i18n/file_util_icu_unittest.cc',
         'i18n/icu_string_conversions_unittest.cc',
         'i18n/word_iterator_unittest.cc',
         'json/json_reader_unittest.cc',
         'json/json_writer_unittest.cc',
         'json/string_escape_unittest.cc',
         'lazy_instance_unittest.cc',
         'leak_tracker_unittest.cc',
         'linked_list_unittest.cc',
         'linked_ptr_unittest.cc',
-        'mac_util_unittest.cc',
+        'mac_util_unittest.mm',
         'message_loop_unittest.cc',
         'message_pump_glib_unittest.cc',
         'object_watcher_unittest.cc',
         'observer_list_unittest.cc',
         'path_service_unittest.cc',
         'pe_image_unittest.cc',
         'pickle_unittest.cc',
         'pr_time_unittest.cc',
         'process_util_unittest.cc',
         'rand_util_unittest.cc',
@@ skipping 41 matching lines @@
         '../third_party/icu/public/common',
       ],
       'dependencies': [
         'base',
         'base_i18n',
         '../testing/gmock.gyp:gmock',
         '../testing/gtest.gyp:gtest',
       ],
       'conditions': [
         ['OS == "linux" or OS == "freebsd"', {
+          'sources/': [ ['exclude', '\\.mm?$' ] ],
           'sources!': [
             'file_version_info_unittest.cc',
             'worker_pool_linux_unittest.cc',
           ],
           'dependencies': [
             '../build/linux/system.gyp:gtk',
             '../build/linux/system.gyp:nss',
             '../tools/xdisplaycheck/xdisplaycheck.gyp:xdisplaycheck',
           ],
         }, {  # OS != "linux" and OS != "freebsd"
           'sources!': [
             'message_pump_glib_unittest.cc',
           ]
         }],
-        ['OS != "mac"', {
-          'sources!': [
-            'mac_util_unittest.cc',
-          ],
-        }],
         # This is needed to trigger the dll copy step on windows.
         # TODO(mark): This should not be necessary.
         ['OS == "win"', {
           'dependencies': [
             '../third_party/icu/icu.gyp:icudata',
           ],
           'sources!': [
             'data_pack_unittest.cc',
             'file_descriptor_shuffle_unittest.cc',
           ],
@@ skipping 154 matching lines @@
       ],
     }],
   ],
 }
 
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