win: Let reorder-imports.py fail if its invocation of swapimport.exe fails.

build/win/reorder-imports.py

 #!/usr/bin/env python
 # Copyright 2014 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
@@ skipping 13 matching lines @@
     '..\\..\\..\\third_party\\syzygy\\binaries\\exe\\swapimport.exe')
 
   args = [swap_exe, '--input-image=%s' % input_image,
       '--output-image=%s' % output_image, '--overwrite', '--no-logo']
 
   if architecture == 'x64':
     args.append('--x64');
 
   args.append('chrome_elf.dll');
 
-  subprocess.call(args)
+  subprocess.check_call(args)
 
   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> -a <target_arch>'
   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')
   parser.add_option('-a', '--arch', help='architecture of build (optional)',
       default='ia32')
   opts, args = parser.parse_args()
 
   if not opts.input or not opts.output:
     parser.error('Please provide and input and output directory')
   return reorder_imports(opts.input, opts.output, opts.arch)
 
 if __name__ == "__main__":
   sys.exit(main(sys.argv[1:]))