Add GN build files for apple_sample_code and molokocacao targets.

third_party/apple_sample_code/BUILD.gn

Index: third_party/apple_sample_code/BUILD.gn
diff --git a/third_party/apple_sample_code/BUILD.gn b/third_party/apple_sample_code/BUILD.gn
new file mode 100644
index 0000000000000000000000000000000000000000..81b7ed013cb3414a9935e25028408110764d31fb
--- /dev/null
+++ b/third_party/apple_sample_code/BUILD.gn
@@ -0,0 +1,12 @@
+# Copyright 2015 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.
+
+source_set("apple_sample_code") {
+  sources = [
+    "ImageAndTextCell.h",
+    "ImageAndTextCell.m",
+  ]
+
+  libs = [ "AppKit.framework" ]
+}