Put a snapshot of pub in the SDK.

utils/pub/pub.gyp

-# Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
+# Copyright (c) 2013, 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.
 
 {
-  'variables': {
-    'dart_dir': '../..',
-  },
   'targets': [
     {
-      'target_name': 'dart2js',
+      'target_name': 'pub',
       'type': 'none',
       'dependencies': [
         '../../runtime/dart-runtime.gyp:dart',
       ],
       'actions': [
         {
-          'action_name': 'generate_dart2js_snapshot',
+          'action_name': 'generate_pub_snapshot',
           'inputs': [
             '<(PRODUCT_DIR)/<(EXECUTABLE_PREFIX)dart<(EXECUTABLE_SUFFIX)',
+            '<!@(["python", "../../tools/list_files.py", "\\.dart$", "../../sdk/lib/_internal/pub"])',
             '../../sdk/lib/_internal/libraries.dart',
-            '<!@(["python", "../../tools/list_files.py", "\\.dart$", "../../sdk/lib/_internal/compiler", "../../runtime/lib"])',
+            '<!@(["python", "../../tools/list_files.py", "\\.dart$", "../../sdk/lib/_internal/compiler"])',
+            '<!@(["python", "../../tools/list_files.py", "\\.dart$", "../../pkg"])',
           ],
           'outputs': [
-            '<(SHARED_INTERMEDIATE_DIR)/utils_wrapper.dart.snapshot',
+            '<(SHARED_INTERMEDIATE_DIR)/pub.dart.snapshot',
           ],
           'action': [
             '<(PRODUCT_DIR)/<(EXECUTABLE_PREFIX)dart<(EXECUTABLE_SUFFIX)',
-            'create_snapshot.dart',
-            '--output_dir=<(SHARED_INTERMEDIATE_DIR)',
-            '--dart2js_main=sdk/lib/_internal/compiler/implementation/dart2js.dart',
+            '--package-root=<(PRODUCT_DIR)/packages/',
+            '--generate-script-snapshot=<(SHARED_INTERMEDIATE_DIR)/pub.dart.snapshot',
+            '../../sdk/lib/_internal/pub/bin/pub.dart',
           ],
         },
       ],
     },
   ],
 }