[infra] Remove dependency on gyp

runtime/tools/generate_projects.py

-#!/usr/bin/env python
-
-# 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.
-
-import os
-import sys
-
-# Change into the dart directory as we want the project to be rooted here.
-runtime_src = os.path.join(os.path.dirname(sys.argv[0]), os.pardir)
-gclient_src = os.path.join(runtime_src, os.pardir)
-project_src = os.path.join(gclient_src, sys.argv[1])
-os.chdir(project_src)
-
-# Add gyp to the imports and if needed get it from the third_party location
-# inside the standalone dart gclient checkout.
-try:
-  import gyp
-except ImportError, e:
-  sys.path.append(os.path.join(os.pardir, 'third_party', 'gyp', 'pylib'))
-  import gyp
-
-if __name__ == '__main__':
-  args = ['--depth', '.']
-  args += ['dart-runtime.gyp']
-
-  # Generate the projects.
-  sys.exit(gyp.main(args))