Expose toString() as enumerable on some objects.

third_party/WebKit/LayoutTests/fast/domurl/url-constructor.html

Index: third_party/WebKit/LayoutTests/fast/domurl/url-constructor.html
diff --git a/third_party/WebKit/LayoutTests/fast/domurl/url-constructor.html b/third_party/WebKit/LayoutTests/fast/domurl/url-constructor.html
index 0128c0c561a14ee99ec47b0e3d5f4731667683cb..4660229473dbcf1e613768c046478b6442004b62 100644
--- a/third_party/WebKit/LayoutTests/fast/domurl/url-constructor.html
+++ b/third_party/WebKit/LayoutTests/fast/domurl/url-constructor.html
@@ -53,4 +53,31 @@ test(function() {
         function() { new URL('//abc', null); },
         'TypeError: Failed to construct \'URL\': Invalid base URL');
 }, 'Invalid URL parameters');
+
+test(function() {
+    function assert_enumerable(p) {
+        assert_true(p in URL.prototype);
+        assert_true(URL.prototype.propertyIsEnumerable(p));
+    }
+
+    assert_true('URL' in self);
+
+    // TODO: uncomment when implemented.
+    // assert_true('domainToASCII' in URL);
+    // assert_true('domainToUnicode' in URL);
+
+    // Arguably better failure stacks to spell them out this way..
+    assert_enumerable('toString');
+    assert_enumerable('origin');
+    assert_enumerable('protocol');
+    assert_enumerable('username');
+    assert_enumerable('password');
+    assert_enumerable('host');
+    assert_enumerable('hostname');
+    assert_enumerable('port');
+    assert_enumerable('pathname');
+    assert_enumerable('search');
+    assert_enumerable('searchParams');
+    assert_enumerable('hash');
+}, 'URL interface');
 </script>