MD Settings: Separate code to be loaded lazily to its own lazy_load.html

chrome/browser/resources/vulcanize_gn.py

 #!/usr/bin/env python
 # Copyright 2016 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 import argparse
 import itertools
 import os
 import platform
 import re
@@ skipping 150 matching lines @@
   with tempfile.NamedTemporaryFile(mode='wt+', delete=False) as tmp:
     tmp.write(output)
 
   try:
     node.RunNode([node_modules.PathToCrisper(),
                  '--source', tmp.name,
                  '--script-in-head', 'false',
                  '--html', html_out_path,
                  '--js', js_out_path])
 
+    # Create an empty JS file if crisper did not create one.
+    if not os.path.isfile(js_out_path):
+      open(js_out_path, 'w').close()
+
     node.RunNode([node_modules.PathToUglifyJs(), js_out_path,
                   '--comments', '"/Copyright|license|LICENSE|\<\/?if/"',
                   '--output', js_out_path])
   finally:
     os.remove(tmp.name)
 
 
 def main(argv):
   parser = argparse.ArgumentParser()
   parser.add_argument('--depfile', required=True)
@@ skipping 13 matching lines @@
   args.depfile = os.path.normpath(args.depfile)
   args.input = os.path.normpath(args.input)
   args.out_folder = os.path.normpath(args.out_folder)
 
   _vulcanize(args.input, args)
   _update_dep_file(args.input, args)
 
 
 if __name__ == '__main__':
   main(sys.argv[1:])