Make sure Chrome_elf.dll imports are correct and that it the first import of chrome.exe

build/win/reorder-imports.py

+#!/usr/bin/env python
+# Copyright 2013 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 optparse
+import os
+import shutil
+import subprocess
+import sys
+
+def reorder_imports(input_dir, output_dir):
+  """Run swapimports.exe on the initial chrome.exe, and write to the output
+  directory. Also copy over any related files that might be needed
+  (pdbs, manifests etc.).
+  """
+  input_image = '--input-image=%s' % (os.path.join(input_dir, 'chrome.exe'))
+  output_image = '--output-image=%s' % (os.path.join(output_dir, 'chrome.exe'))
+
+  swap_exe = os.path.join(
+      __file__,
+      '..\\..\\..\\third_party\\syzygy\\binaries\\exe\\swapimport.exe')
+  subprocess.call(
+      [swap_exe, input_image, output_image, '--overwrite', 'chrome_elf.dll'])
+
+  for fname in glob.iglob(os.path.join(input_dir, 'chrome.exe.*')):
+    shutil.copy(fname, os.path.join(output_dir, os.path.basename(fname)))
+  return 0
+
+
+def main(argv):
+  usage = 'reorder_imports.py -i <input_dir> -o <output_dir>'
+  parser = optparse.OptionParser(usage=usage)
+  parser.add_option('-i', '--input', help='reorder chrome.exe in DIR',
+      metavar='DIR')
+  parser.add_option('-o', '--output', help='write new chrome.exe to DIR',
+      metavar='DIR')
+  opts, args = parser.parse_args()
+
+  if not opts.input or not opts.output:
+    print 'Please provide and input and output directory'

[csharp, 2014/01/13 16:13:26]

Nit: You can replace this line and line 43 with:
parser.error('Please provide and input and output directory') 

+    return 0;
+  return reorder_imports(opts.input, opts.output)
+
+if __name__ == "__main__":
+  sys.exit(main(sys.argv[1:]))