Create app shims with 32-bit icons only, as per OSX 10.5 spec.

third_party/icon_family/icon_family.gyp

Index: third_party/icon_family/icon_family.gyp
diff --git a/third_party/icon_family/icon_family.gyp b/third_party/icon_family/icon_family.gyp
deleted file mode 100644
index 13068e3bcfd24aee69f9e0517c57d63a7095f6f4..0000000000000000000000000000000000000000
--- a/third_party/icon_family/icon_family.gyp
+++ /dev/null
@@ -1,27 +0,0 @@
-# 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.
-
-{
-  'targets': [
-  ],
-  'conditions': [
-    ['OS=="mac"', {
-      'targets' : [
-        {
-          'target_name' : 'icon_family',
-          'type': 'static_library',
-          'sources': [
-            'IconFamily.h',
-            'IconFamily.m',
-            'NSString+CarbonFSRefCreation.h',
-            'NSString+CarbonFSRefCreation.m',
-          ],
-          'defines': [
-            'DISABLE_CUSTOM_ICON'
-          ],
-        },
-      ],
-    }],
-  ],
-}