Update from https://crrev.com/316786

testing/scripts/webview_licenses.py

Index: testing/scripts/webview_licenses.py
diff --git a/testing/scripts/checklicenses.py b/testing/scripts/webview_licenses.py
similarity index 67%
copy from testing/scripts/checklicenses.py
copy to testing/scripts/webview_licenses.py
index 43342d0254660446a56231ce55513c2e38b5ae8e..255c62e993111f82f0d47d2445ed89312ea28c16 100755
--- a/testing/scripts/checklicenses.py
+++ b/testing/scripts/webview_licenses.py
@@ -14,21 +14,18 @@ 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