Implement without patch retries and src-side script for webview_licenses.py

testing/buildbot/chromium.linux.json

Index: testing/buildbot/chromium.linux.json
diff --git a/testing/buildbot/chromium.linux.json b/testing/buildbot/chromium.linux.json
index a5193ffb87cd327dd718156156be769ebc825dc4..f6e8c9731b40a9341be4f1a2e909d015631ccef9 100644
--- a/testing/buildbot/chromium.linux.json
+++ b/testing/buildbot/chromium.linux.json
@@ -554,5 +554,21 @@
       "unit_tests",
       "skia_unittests"
     ]
+  },
+  "Android Tests (dbg)": {
+    "scripts": [
+      {
+        "name": "check_licenses",
+        "script": "webview_licenses.py"
+      }
+    ]
+  },
+  "Android Tests": {
+    "scripts": [
+      {
+        "name": "check_licenses",
+        "script": "webview_licenses.py"
+      }
+    ]
   }
 }