Fix check for when symbols are out of date.

build/linux/dump_app_syms.py

 # Copyright 2015 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.
 
 # Helper script to run dump_syms on Chrome Linux executables and strip
 # them if needed.
 
 import os
 import subprocess
 import sys
 
 if len(sys.argv) != 5:
   print "dump_app_syms.py <dump_syms_exe> <strip_binary>"
   print "                 <binary_with_symbols> <symbols_output>"
   sys.exit(1)
 
 dumpsyms = sys.argv[1]
 strip_binary = sys.argv[2]
 infile = sys.argv[3]
 outfile = sys.argv[4]
 
 # Dump only when the output file is out-of-date.
 if not os.path.isfile(outfile) or \
-   os.stat(outfile).st_mtime > os.stat(infile).st_mtime:
+   os.stat(outfile).st_mtime < os.stat(infile).st_mtime:
   with open(outfile, 'w') as outfileobj:
     subprocess.check_call([dumpsyms, infile], stdout=outfileobj)
 
 if strip_binary != '0':
   subprocess.check_call(['strip', infile])