Output better error messages during build

build/android/strip_library_for_apk.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 optparse
 import os
-import subprocess
 import sys
 
 from pylib import build_utils
 
 
 def StripLibrary(android_strip, android_strip_args, library_path, output_path):
   strip_cmd = ([android_strip] +
                android_strip_args +
                ['-o', output_path, library_path])
-  subprocess.check_call(strip_cmd)
+  build_utils.CheckCallDie(strip_cmd)
 
 
 def main(argv):
   parser = optparse.OptionParser()
 
   parser.add_option('--android-strip',
       help='Path to the toolchain\'s strip binary')
   parser.add_option('--android-strip-arg', action='append',
       help='Argument to be passed to strip')
   parser.add_option('--stripped-libraries-dir',
       help='Directory for stripped libraries')
 
   options, paths = parser.parse_args()
 
   build_utils.MakeDirectory(options.stripped_libraries_dir)
 
   for library_path in paths:
     stripped_library_path = os.path.join(options.stripped_libraries_dir,
         os.path.basename(library_path))
     StripLibrary(options.android_strip, options.android_strip_arg, library_path,
         stripped_library_path)
 
 
 if __name__ == '__main__':
   sys.exit(main(sys.argv))