Bug 1286439 - Fix the last FormData-append XHR web platform test. r=jgraham

--HG--
extra : rebase_source : 19ead5bc7c2adc154f9f20f790824db63d740579

testing/web-platform/meta/XMLHttpRequest/FormData-append.html.ini

@@ -1,5 +0,0 @@
-[FormData-append.html]
-  type: testharness
-  [testFormDataAppendEmptyBlob]
-    expected: FAIL
-

testing/web-platform/tests/XMLHttpRequest/FormData-append.html

@@ -80,8 +80,13 @@
         assert_equals(fd.get('key'), "null");
     }, 'testFormDataAppendToFormNull2');
     test(function() {
-        assert_object_equals(create_formdata(['key', new Blob(), 'blank.txt']).get('key'),
-                             new File(new Blob(), 'blank.txt'));
+        var before = new Date(new Date().getTime() - 2000); // two seconds ago, in case there's clock drift
+        var fd = create_formdata(['key', new Blob(), 'blank.txt']).get('key');
+        assert_equals(fd.name, "blank.txt");
+        assert_equals(fd.type, "");
+        assert_equals(fd.size, 0);
+        assert_greater_than_equal(fd.lastModified, before);
+        assert_less_than_equal(fd.lastModified, new Date());
     }, 'testFormDataAppendEmptyBlob');
 
     function create_formdata() {

testing/web-platform/tests/XMLHttpRequest/responsexml-document-properties.htm

@@ -45,7 +45,7 @@
 
       test(function() {
         var lastModified = Math.floor(new Date(client.responseXML.lastModified).getTime() / 1000);
-        var now = Math.floor(new Date().getTime() / 1000);
+        var now = Math.floor(new Date().getTime(new Date().getTime() + 2000) / 1000); // two seconds from now, in case there's clock drift
         assert_greater_than_equal(lastModified, timePreXHR);
         assert_less_than_equal(lastModified, now);
       }, 'lastModified set to time of response if no HTTP header provided')