Only use one action to create links.

pkg/pkg.gyp

Index: pkg/pkg.gyp
===================================================================
--- pkg/pkg.gyp	(revision 25868)
+++ pkg/pkg.gyp	(working copy)
@@ -13,6 +13,8 @@
           'inputs': [
             '../tools/make_links.py',
             '<!@(["python", "../tools/list_pkg_directories.py", "."])',
+            '<!@(["python", "../tools/list_pkg_directories.py", '
+                '"../third_party/pkg"])',
           ],
           'outputs': [
             '<(SHARED_INTERMEDIATE_DIR)/packages.stamp',
@@ -24,24 +26,6 @@
             '<@(_inputs)',
           ],
         },
-        {
-          'action_name': 'make_third_party_packages',
-          'inputs': [
-            '../tools/make_links.py',
-            '<!@(["python", "../tools/list_pkg_directories.py", '
-                '"../third_party/pkg"])',
-          ],
-          'outputs': [
-            '<(SHARED_INTERMEDIATE_DIR)/third_party_packages.stamp',
-          ],
-          'action': [
-            'python', '../tools/make_links.py',
-            '--timestamp_file=<(SHARED_INTERMEDIATE_DIR)/third_party_packages.'
-                'stamp',
-            '<(PRODUCT_DIR)/packages',
-            '<@(_inputs)',
-          ],
-        },
       ],
     }
   ],