Reland "Add support for installing ARM64 sysroot"

tools/copyright_scanner/copyright_scanner.py

 # Copyright 2014 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.
 
 """Utilities for scanning source files to determine code authorship.
 """
 
 import itertools
 
 def ForwardSlashesToOsPathSeps(input_api, path):
@@ skipping 51 matching lines @@
     # This is a tests directory that doesn't exist in the shipped product.
     path_join('tools', 'perf', 'page_sets'),
     path_join('tools', 'perf', 'page_sets', 'tough_animation_cases'),
     # Histogram tools, doesn't exist in the snapshot
     path_join('tools', 'histograms'),
     # Swarming tools, doesn't exist in the snapshot
     path_join('tools', 'swarming_client'),
     # Don't check downloaded goma client binaries.
     path_join('build', 'goma', 'client'),
     # Ignore sysroots.
+    path_join('build', 'linux', 'debian_jessie_arm64-sysroot'),
     path_join('build', 'linux', 'debian_wheezy_amd64-sysroot'),
     path_join('build', 'linux', 'debian_wheezy_arm-sysroot'),
     path_join('build', 'linux', 'debian_wheezy_mips-sysroot'),
     path_join('build', 'linux', 'debian_wheezy_i386-sysroot'),
     # Old location (TODO(sbc): Remove this once it no longer exists on any bots)
     path_join('chrome', 'installer', 'linux', 'debian_wheezy_arm-sysroot'),
     # Data is not part of open source chromium, but are included on some bots.
     path_join('data'),
     # This is not part of open source chromium, but are included on some bots.
     path_join('skia', 'tools', 'clusterfuzz-data'),
@@ skipping 310 matching lines @@
         'The following files are whitelisted in %s, ' \
         'but do not exist or not files:' % _GetWhitelistFileName(input_api),
         sorted(missing_files)))
   if stale_files:
     results.append(output_api.PresubmitPromptWarning(
         'The following files are whitelisted unnecessarily. You must ' \
         'remove the following files from the whitelist file ' \
         '%s:' % _GetWhitelistFileName(input_api),
         sorted(stale_files)))
   return results