Remove all references to GYP

sync_chromium.py

 #!/usr/bin/env python
 # Copyright (c) 2014 The WebRTC project authors. All Rights Reserved.
 #
 # Use of this source code is governed by a BSD-style license
 # that can be found in the LICENSE file in the root of the source
 # tree. An additional intellectual property rights grant can be found
 # in the file PATENTS.  All contributing project authors may
 # be found in the AUTHORS file in the root of the source tree.
 
 """Script to download a Chromium checkout into the workspace.
@@ skipping 86 matching lines @@
     repr(target_os_list),
   ])
   if (os.path.exists(os.path.join(opts.chromium_dir, 'src')) and
       os.path.exists(flag_file)):
     with open(flag_file, 'r') as f:
       if f.read() == flag_file_content:
         print 'Chromium already up to date: ', opts.target_revision
         return 0
     os.unlink(flag_file)
 
-  env = os.environ.copy()
-
   # Workaround to avoid sync failure due move in
   # https://codereview.chromium.org/1155743013
   # TODO(kjellander): Remove this after the summer of 2015.
   freetype_src = os.path.join(CR_DIR, 'src', 'third_party', 'freetype-android',
                               'src')
   if os.path.isdir(freetype_src):
     shutil.rmtree(freetype_src)
 
   # Avoid downloading NaCl toolchain as part of the Chromium hooks.
-  env.setdefault('GYP_DEFINES', '')
-  env['GYP_DEFINES'] += ' disable_nacl=1'
-  env['GYP_CHROMIUM_NO_ACTION'] = '1'
   gclient_cmd = 'gclient.bat' if sys.platform.startswith('win') else 'gclient'
   args = [
       gclient_cmd, 'sync', '--force', '--revision', 'src@'+opts.target_revision
   ]
 
   if os.environ.get('CHROME_HEADLESS') == '1':
     # Running on a buildbot.
     args.append('-vvv')
 
     if sys.platform.startswith('win'):
@@ skipping 45 matching lines @@
     args += ['--deps=' + target_os_list]
 
   print textwrap.dedent("""\
   +---------------------------------------------------------------------+
   | NOTICE: This sync of Chromium will take a long time as several      |
   |         gigabytes of data are downloaded. If this is your initial   |
   |         sync and it's interrupted, try running 'gclient sync' again.|
   |         If that fails, wipe everything clean and start over again.  |
   +---------------------------------------------------------------------+""")
   print 'Running "%s" in %s' % (' '.join(args), opts.chromium_dir)
-  ret = subprocess.call(args, cwd=opts.chromium_dir, env=env)
+  ret = subprocess.call(args, cwd=opts.chromium_dir)
   if ret == 0:
     with open(flag_file, 'wb') as f:
       f.write(flag_file_content)
 
   return ret
 
 
 if __name__ == '__main__':
   sys.exit(main())