Test that Clear-Site-Data is not supported on an insecure navigation

third_party/WebKit/LayoutTests/external/wpt/clear-site-data/support/test_utils.js

 var TestUtils = (function() {
   function randomString() {
     var result = "";
     for (var i = 0; i < 5; i++)
         result += String.fromCharCode(97 + Math.floor(Math.random() * 26));
     return result;
   };
 
   /**
    * Representation of one datatype.
@@ skipping 57 matching lines @@
         if (mask & (1 << datatype))
           combination.push(TestUtils.DATATYPES[datatype]);
       }
 
       combinations.push(combination);
     }
     return combinations;
   })();
 
   /**
+   * Ensures that all datatypes are nonempty. Should be called in the test
+   * setup phase.
+   */
+  TestUtils.populateDatatypes = function() {
+    return Promise.all(TestUtils.DATATYPES.map(function(datatype) {
+      return new Promise(function(resolve, reject) {
+        datatype.add().then(function() {
+          datatype.isEmpty().then(function(isEmpty) {
+            assert_false(
+                isEmpty,
+                datatype.name +
+                    " has to be nonempty before the test starts.");
+            resolve();
+          });
+        });
+      });
+    }));
+  };
+
+  /**
    * Get the support server URL that returns a Clear-Site-Data header
    * to clear |datatypes|.
    * @param{Array.<Datatype>} datatypes The list of datatypes to be deleted.
    * @return string The URL to be queried.
    */
   TestUtils.getClearSiteDataUrl = function(datatypes) {
     names = datatypes.map(function(e) { return e.name });
     return "support/echo-clear-site-data.py?" + names.join("&");
   }
 
   return TestUtils;
 })();