Test CL to demonstrate GN + hermetic toolchain

third_party/WebKit/Source/build/scripts/in_generator.py

 # Copyright (C) 2013 Google Inc. All rights reserved.
 #
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 # 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
 # copyright notice, this list of conditions and the following disclaimer
 # in the documentation and/or other materials provided with the
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 # this software without specific prior written permission.
 #
 # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 # "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 # LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 # A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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 # LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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+import os
 import os.path
 import shlex
 import shutil
 import optparse
 
 from in_file import InFile
 
 
 class Writer(object):
+    os.environ['DEVELOPER_DIR'] = "/Users/erikchen/projects/chromium/src/build/mac_files/Xcode.app/"
     # Subclasses should override.
     class_name = None
     defaults = None
     valid_values = None
     default_parameters = None
 
     def __init__(self, in_files):
         if isinstance(in_files, basestring):
             in_files = [in_files]
         if in_files:
@@ skipping 38 matching lines @@
             exit(1)
 
         parser = optparse.OptionParser()
         parser.add_option("--gperf", default="gperf")
         parser.add_option("--output_dir", default=os.getcwd())
         options, args = parser.parse_args()
 
         writer = self._writer_class(args)
         writer.set_gperf_path(options.gperf)
         writer.write_files(options.output_dir)