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

Index: third_party/WebKit/LayoutTests/external/wpt/clear-site-data/support/test_utils.js
diff --git a/third_party/WebKit/LayoutTests/external/wpt/clear-site-data/support/test_utils.js b/third_party/WebKit/LayoutTests/external/wpt/clear-site-data/support/test_utils.js
index 6aff373f23a46d1887689618104c86c144cef108..35b0a01e5ecabd8ef7fe36e76576c6f514af909a 100644
--- a/third_party/WebKit/LayoutTests/external/wpt/clear-site-data/support/test_utils.js
+++ b/third_party/WebKit/LayoutTests/external/wpt/clear-site-data/support/test_utils.js
@@ -74,6 +74,26 @@ var TestUtils = (function() {
     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|.