Make aura_demo work on Mac

ui/ui.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 115 matching lines @@
         'base/cursor/cursor.cc',
         'base/cursor/cursor.h',
         'base/cursor/cursor_loader.h',
         'base/cursor/cursor_loader_null.cc',
         'base/cursor/cursor_loader_null.h',
         'base/cursor/cursor_loader_win.cc',
         'base/cursor/cursor_loader_win.h',
         'base/cursor/cursor_loader_x11.cc',
         'base/cursor/cursor_loader_x11.h',
         'base/cursor/cursor_null.cc',
+        'base/cursor/cursor_mac.mm',
         'base/cursor/cursor_win.cc',
         'base/cursor/cursor_x11.cc',
         'base/cursor/cursors_aura.cc',
         'base/cursor/cursors_aura.h',
         'base/default_theme_provider.cc',
         'base/default_theme_provider.h',
         'base/default_theme_provider_mac.mm',
         'base/device_form_factor_android.cc',
         'base/device_form_factor_desktop.cc',
         'base/device_form_factor_ios.mm',
@@ skipping 203 matching lines @@
             ],
           },
         }],
         ['toolkit_views==1', {
           'dependencies': [
             'events/events.gyp:events',
           ],
         }],
         ['use_aura==1', {
           'sources/': [
+            ['exclude', 'base/clipboard/clipboard_mac.mm'],
+            ['exclude', 'base/layout_mac.mm'],
             ['exclude', 'base/work_area_watcher_observer.h'],
             ['exclude', 'base/x/active_window_watcher_x.cc'],
             ['exclude', 'base/x/active_window_watcher_x.h'],
             ['exclude', 'base/x/active_window_watcher_x_observer.h'],
             ['exclude', 'base/x/root_window_property_watcher_x.cc'],
             ['exclude', 'base/x/root_window_property_watcher_x.h'],
             ['exclude', 'base/x/work_area_watcher_x.cc'],
             ['exclude', 'base/x/work_area_watcher_x.h'],
           ],
           'dependencies': [
             'events/events.gyp:events',
           ],
         }, {  # use_aura!=1
           'sources!': [
             'base/cursor/cursor.cc',
             'base/cursor/cursor.h',
             'base/cursor/cursor_loader_x11.cc',
             'base/cursor/cursor_loader_x11.h',
+            'base/cursor/cursor_mac.mm',
             'base/cursor/cursor_win.cc',
             'base/cursor/cursor_x11.cc',
             'base/x/selection_owner.cc',
             'base/x/selection_owner.h',
             'base/x/selection_requestor.cc',
             'base/x/selection_requestor.h',
             'base/x/selection_utils.cc',
             'base/x/selection_utils.h',
           ]
         }],
@@ skipping 239 matching lines @@
            'variables': {
              'jni_gen_package': 'ui',
              'jni_generator_ptr_type': 'long',
            },
            'includes': [ '../build/jni_generator.gypi' ],
          },
        ],
     }],
   ],
 }