Add gyp file to build apple_sample_code.

third_party/apple_sample_code/apple_sample_code.gyp

Index: third_party/apple_sample_code/apple_sample_code.gyp
diff --git a/third_party/apple_sample_code/apple_sample_code.gyp b/third_party/apple_sample_code/apple_sample_code.gyp
new file mode 100644
index 0000000000000000000000000000000000000000..331c6989a0fdc9c3e4e774d45c6ccb011b71084a
--- /dev/null
+++ b/third_party/apple_sample_code/apple_sample_code.gyp
@@ -0,0 +1,21 @@
+# Copyright 2013 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': [
+    {
+      'target_name': 'apple_sample_code',
+      'type': 'static_library',
+      'link_settings': {
+        'libraries': [
+          '$(SDKROOT)/System/Library/Frameworks/AppKit.framework',
+        ],
+      },
+      'sources': [
+        'ImageAndTextCell.h',
+        'ImageAndTextCell.m',
+      ],
+    },
+  ],
+}