Make find_runtime_tools available for non-Chrome executables.

tools/find_runtime_symbols/prepare_symbol_info.py

 #!/usr/bin/env python
 # Copyright (c) 2012 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 hashlib
 import json
 import logging
 import os
 import re
@@ skipping 136 matching lines @@
 
   LOGGER.debug('Listing up symbols.')
   files = {}
   for entry in maps.iter(ProcMaps.executable):
     LOGGER.debug('  %016x-%016x +%06x %s' % (
         entry.begin, entry.end, entry.offset, entry.name))
     binary_path = entry.name
     for target_path, host_path in alternative_dirs.iteritems():
       if entry.name.startswith(target_path):
         binary_path = entry.name.replace(target_path, host_path, 1)
+    if not (ProcMaps.EXECUTABLE_PATTERN.match(binary_path) or
+            (os.path.isfile(binary_path) and os.access(binary_path, os.X_OK))):
+      continue
     nm_filename = _dump_command_result(
         'nm -n --format bsd %s | c++filt' % binary_path,
         output_dir_path, os.path.basename(binary_path), '.nm')
     if not nm_filename:
       continue
     readelf_e_filename = _dump_command_result(
         'readelf -eW %s' % binary_path,
         output_dir_path, os.path.basename(binary_path), '.readelf-e')
     if not readelf_e_filename:
       continue
@@ skipping 55 matching lines @@
   elif len(sys.argv) == 2:
     result, _ = prepare_symbol_info(sys.argv[1])
   else:
     result, _ = prepare_symbol_info(sys.argv[1], sys.argv[2])
 
   return not result
 
 
 if __name__ == '__main__':
   sys.exit(main())