Update from https://crrev.com/316786

testing/scripts/webview_licenses.py

 #!/usr/bin/env python
 # 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.
 
 import json
 import os
 import sys
 
 
 import common
 
 
 def main_run(args):
   with common.temporary_file() as tempfile_path:
     rc = common.run_command([
-        os.path.join(common.SRC_DIR, 'tools', 'checklicenses',
-                     'checklicenses.py'),
+        os.path.join(common.SRC_DIR, 'android_webview', 'tools',
+                     'webview_licenses.py'),
+        'scan',
         '--json', tempfile_path
     ])
 
     with open(tempfile_path) as f:
-      checklicenses_results = json.load(f)
-
-  result_set = set()
-  for result in checklicenses_results:
-    result_set.add((result['filename'], result['license']))
+      results = json.load(f)
 
   json.dump({
       'valid': True,
-      'failures': ['%s: %s' % (r[0], r[1]) for r in result_set],
+      'failures': results,
   }, args.output)
 
   return rc
 
 
 def main_compile_targets(args):
   json.dump([], args.output)
 
 
 if __name__ == '__main__':
   funcs = {
     'run': main_run,
     'compile_targets': main_compile_targets,
   }
   sys.exit(common.run_script(sys.argv[1:], funcs))