A better approach for listening the title change in testing is to write a CallbackHelper for title changed callback, like OnPageStartedHelper, OnPageFinishedHelper, which provides a sync operation to block the testing thread until the title is already changed instead of explicitly calling Thread.Sleep which might become flaky failure.

You can reference `content/public/test/android/javatests/src/org/chromium/content/browser/test/util/CallbackHelper.java` file.