Add src-side script for webkit_lint

testing/scripts/webkit_lint.py

Index: testing/scripts/webkit_lint.py
diff --git a/testing/scripts/webview_licenses.py b/testing/scripts/webkit_lint.py
similarity index 78%
copy from testing/scripts/webview_licenses.py
copy to testing/scripts/webkit_lint.py
index 255c62e993111f82f0d47d2445ed89312ea28c16..c33f87b9c9458292c5a34a26a751459940d36bc4 100755
--- a/testing/scripts/webview_licenses.py
+++ b/testing/scripts/webkit_lint.py
@@ -14,18 +14,17 @@ import common
 def main_run(args):
   with common.temporary_file() as tempfile_path:
     rc = common.run_command([
-        os.path.join(common.SRC_DIR, 'android_webview', 'tools',
-                     'webview_licenses.py'),
-        'scan',
+        os.path.join(common.SRC_DIR, 'third_party', 'WebKit',
+                     'Tools', 'Scripts', 'lint-test-expectations'),
         '--json', tempfile_path
     ])
 
     with open(tempfile_path) as f:
-      results = json.load(f)
+      failures = json.load(f)
 
   json.dump({
       'valid': True,
-      'failures': results,
+      'failures': failures,
   }, args.output)
 
   return rc