Initial CL to create SDK directory (this will be done as a build step).

dart.gyp

 # Copyright (c) 2011, 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': 'compiler',
       'type': 'none',
       'dependencies': [
@@ skipping 17 matching lines @@
         'frog/dart-frog.gyp:frog',
       ],
     },
     {
       'target_name': 'frogsh',
       'type': 'none',
       'dependencies': [
         'frog/dart-frog.gyp:frogsh',
       ],
     },
+    {
+      'target_name': 'sdk',
+      'type': 'none',
+      'dependencies': [
+        'frog',
+        'runtime',
+      ],
+      'actions': [
+        {
+          'action_name': 'create_sdk',
+          'inputs': [
+            'tools/create_sdk.py',
+          ],
+          'outputs': [],
+          'action': [
+            'python',
+            'tools/create_sdk.py',
+          ],
+          'message': 'Creating SDK.',
+        },
+      ],
+    },
     # TODO(ngeoffray): Fling does not have proper dependencies,
     # so don't build it for now.
     #{
     #  'target_name': 'client',
     #  'type': 'none',
     #  'dependencies': [
     #    'client/dart.gyp:fling',
     #  ],
     #},
   ],
 }