NaCl: Update revision in DEPS, r13947 -> r13953

DEPS

 # This file is used to manage the dependencies of the Chromium src repo. It is
 # used by gclient to determine what version of each dependency to check out, and
 # where.
 #
 # For more information, please refer to the official documentation:
 #   https://sites.google.com/a/chromium.org/dev/developers/how-tos/get-the-code
 #
 # When adding a new dependency, please update the top-level .gitignore file
 # to list the dependency's destination directory.
 #
@@ skipping 78 matching lines @@
   # the commit queue can handle CLs rolling lighttpd
   # and whatever else without interference from each other.
   'lighttpd_revision': '9dfa55d15937a688a92cbf2b7a8621b0927d06eb',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling lss
   # and whatever else without interference from each other.
   'lss_revision': '952107fa7cea0daaabead28c0e92d579bee517eb',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling NaCl
   # and whatever else without interference from each other.
-  'nacl_revision': '2a8cf9cfd9a14e9e721d5e514434cec1d82bf294', # from svn revision r13947
+  'nacl_revision': '6a6d18e28e0b1bba5a408f4940ccbde4f1420d63', # from svn revision r13953
 }
 
 # Only these hosts are allowed for dependencies in this DEPS file.
 # If you need to add a new host, contact chrome infrastracture team.
 allowed_hosts = [
   'chromium.googlesource.com',
   'boringssl.googlesource.com',
   'pdfium.googlesource.com',
 ]
 
@@ skipping 660 matching lines @@
     # corresponding .py files have already been deleted.
     'name': 'remove_stale_pyc_files',
     'pattern': 'src/tools/.*\\.py',
     'action': [
         'python',
         'src/tools/remove_stale_pyc_files.py',
         'src/tools',
     ],
   },
 ]