Switch GYP script to not use utils.py anymore.

build/gyp_v8

 #!/usr/bin/env python
 #
 # Copyright 2012 the V8 project authors. All rights reserved.
 # Redistribution and use in source and binary forms, with or without
 # modification, are permitted provided that the following conditions are
 # met:
 #
 #     * Redistributions of source code must retain the above copyright
 #       notice, this list of conditions and the following disclaimer.
 #     * Redistributions in binary form must reproduce the above
@@ skipping 14 matching lines @@
 # DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 # This script is wrapper for V8 that adds some support for how GYP
 # is invoked by V8 beyond what can be done in the gclient hooks.
 
 import glob
 import os
+import platform
 import shlex
 import sys
 
 script_dir = os.path.dirname(__file__)
 v8_root = os.path.normpath(os.path.join(script_dir, os.pardir))
 
 if __name__ == '__main__':
   os.chdir(v8_root)
   script_dir = os.path.dirname(__file__)
   v8_root = '.'
 
-sys.path.insert(0, os.path.join(v8_root, 'tools'))
-import utils
-
 sys.path.insert(0, os.path.join(v8_root, 'build', 'gyp', 'pylib'))
 import gyp
 
 
 def apply_gyp_environment(file_path=None):
   """
   Reads in a *.gyp_env file and applies the valid keys to os.environ.
   """
   if not file_path or not os.path.exists(file_path):
     return
@@ skipping 98 matching lines @@
   # to enfore syntax checking.
   syntax_check = os.environ.get('V8_GYP_SYNTAX_CHECK')
   if syntax_check and int(syntax_check):
     args.append('--check')
 
   print 'Updating projects from gyp files...'
   sys.stdout.flush()
 
   # Generate for the architectures supported on the given platform.
   gyp_args = list(args)
-  if utils.GuessOS() == 'linux':
+  if platform.system() == 'linux':
     gyp_args.append('--generator-output=out')
   run_gyp(gyp_args)