Add a GYP dependency from pub_packages onto pkg_files:http_files_stamp.

pkg/pkg.gyp

 # Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 # for details. 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': 'pkg_packages',
       'type': 'none',
       'actions': [
@@ skipping 23 matching lines @@
           ],
         },
       ],
     },
     {
       'target_name': 'pub_packages',
       'type': 'none',
       'actions': [
         {
           'action_name': 'remove_html_imports',
+          'dependencies': [
+            'pkg_files.gyp:http_files_stamp',

[ahe, 2014/08/07 09:55:35]

Why do you have two gyp files in this directory?

+          ],
           'inputs': [
             '../tools/remove_html_imports.py',
             '<(SHARED_INTERMEDIATE_DIR)/http_files.stamp',
           ],
           'outputs': [
             '<(SHARED_INTERMEDIATE_DIR)/remove_html_imports/http/lib/http.dart',
           ],
           'action': [
             'python', '../tools/remove_html_imports.py',
             'http/lib',
@@ skipping 25 matching lines @@
             '--timestamp_file=<(SHARED_INTERMEDIATE_DIR)/pub_packages.stamp',
             '<(PRODUCT_DIR)/pub_packages',
             '<@(_inputs)',
             '<(SHARED_INTERMEDIATE_DIR)/remove_html_imports/http/lib',
           ],
         },
       ],
     }
   ],
 }