Reland "Add support for installing ARM64 sysroot"

tools/checklicenses/checklicenses.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.
 
 """Makes sure that all files contain proper licensing information."""
 
 
 import json
 import optparse
@@ skipping 630 matching lines @@
 }
 
 EXCLUDED_PATHS = [
     # Don't check generated files
     'out/',
 
     # Don't check downloaded goma client binaries
     'build/goma/client',
 
     # Don't check sysroot directories
+    'build/linux/debian_jessie_arm64-sysroot',
     'build/linux/debian_wheezy_amd64-sysroot',
     'build/linux/debian_wheezy_arm-sysroot',
     'build/linux/debian_wheezy_i386-sysroot',
     'build/linux/debian_wheezy_mips-sysroot',
 ]
 
 
 def check_licenses(options, args):
   # Figure out which directory we have to check.
   if len(args) == 0:
@@ skipping 116 matching lines @@
                            action='store_true',
                            default=False,
                            help='Ignore path-specific license whitelist.')
   option_parser.add_option('--json', help='Path to JSON output file')
   options, args = option_parser.parse_args()
   return check_licenses(options, args)
 
 
 if '__main__' == __name__:
   sys.exit(main())