Fix remaining shared_library link_settings propagation

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 23 matching lines @@
       'include_dirs': [
         '..',
       ],
       'conditions': [
         ['use_aura==1', {
           'dependencies': [
             '../aura/aura.gyp:aura',
             '../compositor/compositor.gyp:compositor',
           ],
         }],
+        ['OS=="mac"', {
+          'link_settings': {
+            'libraries': [
+              '$(SDKROOT)/System/Library/Frameworks/AppKit.framework',
+              '$(SDKROOT)/System/Library/Frameworks/ApplicationServices.framework',
+              '$(SDKROOT)/System/Library/Frameworks/CoreFoundation.framework',
+            ],
+          },
+        }],
       ],
     },
     {
       'target_name': 'snapshot_unittests',
       'type': '<(gtest_target_type)',
       'dependencies': [
         '../../skia/skia.gyp:skia',
         '../../base/base.gyp:base',
         '../../base/base.gyp:test_support_base',
         '../../testing/gtest.gyp:gtest',
@@ skipping 39 matching lines @@
             'snapshot',
           ],
           'include_dirs': [
             '../..',
           ],
         },
       ],
     }],
   ],
 }