Fix duplicate name warnings from make_zip, and pass allowZip64.

chrome/tools/build/make_zip.py

 #!/usr/bin/python
 # Copyright 2015 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 glob
 import os
 import sys
 import zipfile
 
 
 def main(args):
   if len(args) != 3:
     print 'usage: make_zip.py build_dir FILES.cfg output.zip'
     return 1
   (build_dir, cfg_file, output_file) = args
 
   exec_globals = {'__builtins__': None}
   execfile(cfg_file, exec_globals)
 
   cwd = os.getcwd()
   os.chdir(build_dir)
 
-  files = []
+  files = set()
   for file_spec in exec_globals['FILES']:
     pattern = file_spec['filename']
     for glob_match in glob.glob(pattern):
       if os.path.isfile(glob_match):
-        files.append(glob_match)
+        files.add(glob_match)
       elif os.path.isdir(glob_match):
         for root, dirs, filenames in os.walk(glob_match):
           for f in filenames:
-            files.append(os.path.join(root, f));
+            files.add(os.path.join(root, f));
 
   os.chdir(cwd)
   if not len(files):
     print 'error: no files found in %s' % build_dir
     return 1
 
   with zipfile.ZipFile(output_file, mode = 'w',
-      compression = zipfile.ZIP_DEFLATED) as output:
-    for f in files:
+      compression = zipfile.ZIP_DEFLATED, allowZip64 = True) as output:
+    for f in sorted(files):
       sys.stdout.write("%s\r" % f[:40].ljust(40, ' '))
       sys.stdout.flush()
       output.write(os.path.join(build_dir, f), f)
 
   print 'wrote %s' % output_file
 
 
 if __name__ == '__main__':
   sys.exit(main(sys.argv[1:]))