Java: add negative test cases for WebView file access query

Author: egregius313

java/ql/test/query-tests/security/CWE-200/semmle/tests/WebViewFileAccess.java

@@ -11,4 +11,14 @@ void configure(WebView view) {
 
         settings.setAllowUniversalAccessFromFileURLs(true);
     }
+
+    void configureSafe(WebView view) {
+        WebSettings settings = view.getSettings();
+
+        settings.setAllowFileAccess(false);
+
+        settings.setAllowFileAccessFromFileURLs(false);
+
+        settings.setAllowUniversalAccessFromFileURLs(false);
+    }
 }