diff --git a/tests/cases/user/chrome-devtools-frontend/definitions.js b/tests/cases/user/chrome-devtools-frontend/definitions.js
new file mode 100644
index 0000000000..aa58199ff1
--- /dev/null
+++ b/tests/cases/user/chrome-devtools-frontend/definitions.js
@@ -0,0 +1,10 @@
+var Common = {};
+var UI = {};
+var SDK = {};
+var ConsoleModel = {};
+var MobileThrottling = {};
+var Main = {};
+var TimelineModel = {};
+var Accessibility = {};
+var Protocol = {};
+var Workspace = {};