Android's stack script: Make --output-dir / CHROMIUM_OUTPUT_DIR mandatory

build/android/asan_symbolize.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 collections
 import optparse
 import os
@@ skipping 82 matching lines @@
   parser = optparse.OptionParser()
   parser.add_option('-l', '--logcat',
                     help='File containing adb logcat output with ASan stacks. '
                          'Use stdin if not specified.')
   parser.add_option('--output-directory',
                     help='Path to the root build directory.')
   options, _ = parser.parse_args()
 
   if options.output_directory:
     constants.SetOutputDirectory(options.output_directory)
+  # Do an up-front test that the output directory is known.
+  constants.CheckOutputDirectory()
 
   if options.logcat:
     asan_input = file(options.logcat, 'r')
   else:
     asan_input = sys.stdin
   _Symbolize(asan_input.readlines())
 
 
 if __name__ == "__main__":
   sys.exit(main())