Check for equality of the URL's origin in replaceState/pushState

third_party/WebKit/LayoutTests/http/tests/navigation/pushstate-whitelisted-at-unique-origin-denied.html

Index: third_party/WebKit/LayoutTests/http/tests/navigation/pushstate-whitelisted-at-unique-origin-denied.html
diff --git a/third_party/WebKit/LayoutTests/http/tests/navigation/pushstate-whitelisted-at-unique-origin-denied.html b/third_party/WebKit/LayoutTests/http/tests/navigation/pushstate-whitelisted-at-unique-origin-denied.html
new file mode 100644
index 0000000000000000000000000000000000000000..c89da59223d77cb18a7505243720c5072079eb61
--- /dev/null
+++ b/third_party/WebKit/LayoutTests/http/tests/navigation/pushstate-whitelisted-at-unique-origin-denied.html
@@ -0,0 +1,14 @@
+<meta http-equiv="Content-Security-Policy" content="sandbox allow-scripts">
+<script src="../resources/testharness.js"></script>
+<script src="../resources/testharnessreport.js"></script>
+<script>
+test(function () {
+    testRunner.addOriginAccessWhitelistEntry(location.origin, location.protocol, '', false);
+}, 'testRunner.addOriginAccessWhitelistEntry is required for this test');
+
+test(function () {
+    assert_throws('SecurityError', function () {
+        history.pushState(null, null, document.URL);
+    });
+}, 'pushState at unique origin should fail with SecurityError (even with whitelisted origins)');
+</script>