diff --git a/feature-policy/resources/featurepolicy.js b/feature-policy/resources/featurepolicy.js
index 744c4c62069508..b48bdb0916df27 100644
--- a/feature-policy/resources/featurepolicy.js
+++ b/feature-policy/resources/featurepolicy.js
@@ -253,6 +253,65 @@ function run_all_fp_tests_allow_all(
'" can be disabled in cross-origin iframes using "allow" attribute.');
}
+// This function runs all feature policy tests for a particular feature that
+// has a default policy of "*". This includes testing:
+// 1. Feature usage succeeds by default in the top level frame.
+// 2. Feature usage succeeds by default in a same-origin iframe.
+// 3. Feature usage fails when an allow attribute is specified on a
+// same-origin iframe with a value of "feature-name 'none'".
+//
+// The same page which called this function will be loaded in the iframe in
+// order to test feature usage there. When this function is called in that
+// context it will simply run the feature and return a result back via
+// postMessage.
+//
+// Arguments:
+// feature_name: The name of the feature as it should be specified in an
+// allow attribute.
+// error_name: If feature usage does not succeed, this is the string
+// representation of the error that will be passed in the rejected
+// promise.
+// feature_promise_factory: A function which returns a promise which tests
+// feature usage. If usage succeeds, the promise should resolve. If it
+// fails, the promise should reject with an error that can be
+// represented as a string.
+function run_all_fp_tests_allow_all_same_origin(
+ feature_name, error_name, feature_promise_factory) {
+ // This may be the version of the page loaded up in an iframe. If so, just
+ // post the result of running the feature promise back to the parent.
+ if (page_loaded_in_iframe()) {
+ test_feature_in_iframe(feature_name, feature_promise_factory);
+ return;
+ }
+
+ // Run the various tests.
+ // 1. Allowed in top-level frame.
+ promise_test(
+ () => feature_promise_factory(),
+ 'Default "' + feature_name +
+ '" feature policy ["*"] allows the top-level document.');
+
+ // 2. Allowed in same-origin iframe.
+ const same_origin_frame_pathname = same_origin_url(feature_name);
+ async_test(
+ t => {
+ test_feature_availability_with_post_message_result(
+ t, same_origin_frame_pathname, '#OK');
+ },
+ 'Default "' + feature_name +
+ '" feature policy ["*"] allows same-origin iframes.');
+
+ // 3. Blocked in same-origin iframe with "allow" attribute set to 'none'.
+ async_test(
+ t => {
+ test_feature_availability_with_post_message_result(
+ t, same_origin_frame_pathname, '#' + error_name,
+ feature_name + " 'none'");
+ },
+ 'Feature policy "' + feature_name +
+ '" can be disabled in same-origin iframes using "allow" attribute.');
+}
+
// This function tests that a given policy allows each feature for the correct
// list of origins specified by the |expected_policy|.
// Arguments:
diff --git a/html/browsers/windows/document-access/document_access_feature_policy.tentative.html b/html/browsers/windows/document-access/document_access_feature_policy.tentative.html
new file mode 100644
index 00000000000000..df8945aec9fcf9
--- /dev/null
+++ b/html/browsers/windows/document-access/document_access_feature_policy.tentative.html
@@ -0,0 +1,23 @@
+
+
+
+
+
+
+
diff --git a/html/browsers/windows/document-access/document_access_parent_access.tentative.html b/html/browsers/windows/document-access/document_access_parent_access.tentative.html
new file mode 100644
index 00000000000000..9a06d1beb4a067
--- /dev/null
+++ b/html/browsers/windows/document-access/document_access_parent_access.tentative.html
@@ -0,0 +1,25 @@
+
+
+
+
+
+
+
diff --git a/html/browsers/windows/document-access/resources/child.html b/html/browsers/windows/document-access/resources/child.html
new file mode 100644
index 00000000000000..614b6a087ddb69
--- /dev/null
+++ b/html/browsers/windows/document-access/resources/child.html
@@ -0,0 +1,6 @@
+