Update gyp, keep VS 2008 default for Windows builds.

bleeding_edge/dart/tools/gyp_dart.py

+#!/usr/bin/env python
+
+# Copyright (c) 2012 The Dart Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+# This script is wrapper for Dart that adds some support for how GYP
+# is invoked by Dart beyond what can be done in the gclient hooks.
+
+import os
+import subprocess
+import sys
+
+def Execute(args):
+  process = subprocess.Popen(args)
+  process.wait()
+  return process.returncode
+
+if __name__ == '__main__':
+  args = ['python',  "dart/third_party/gyp/gyp", "--depth=dart",
+                 "-Idart/tools/gyp/all.gypi", "dart/dart.gyp"]
+
+  # On Win32 default to Visual Studio 2008 if no version is specified.
+

[Emily Fortuna, 2012/08/06 17:04:08]

nit: remove extra line

+  if sys.platform == 'win32':
+    if not os.environ.get('GYP_MSVS_VERSION'):
+      args.extend(['-G', 'msvs_version=2008'])
+
+  sys.exit(Execute(args))