Bug 1526530 [wpt PR 15131] - Update wpt metadata, a=testonly

wpt-pr: 15131
wpt-type: metadata

testing/web-platform/meta/webstorage/symbol-props.window.js.ini

@@ -0,0 +1,25 @@
+[symbol-props.window.html]
+  [sessionStorage: plain set + get (loose)]
+    expected: FAIL
+
+  [localStorage: defineProperty + get]
+    expected: FAIL
+
+  [sessionStorage: plain set + get (strict)]
+    expected: FAIL
+
+  [localStorage: defineProperty not configurable]
+    expected: FAIL
+
+  [sessionStorage: defineProperty + get]
+    expected: FAIL
+
+  [sessionStorage: defineProperty not configurable]
+    expected: FAIL
+
+  [localStorage: plain set + get (strict)]
+    expected: FAIL
+
+  [localStorage: plain set + get (loose)]
+    expected: FAIL
+