Rename Toolkit's webextensions component directory to better reflect what it is.

toolkit/components/webextensions/test/xpcshell/test_ext_manifest_incognito.js

@@ -0,0 +1,27 @@
+/* -*- Mode: indent-tabs-mode: nil; js-indent-level: 2 -*- */
+/* vim: set sts=2 sw=2 et tw=80: */
+"use strict";
+
+
+add_task(function* test_manifest_incognito() {
+  let normalized = yield ExtensionTestUtils.normalizeManifest({
+    "incognito": "spanning",
+  });
+
+  equal(normalized.error, undefined, "Should not have an error");
+  equal(normalized.errors.length, 0, "Should not have warnings");
+  equal(normalized.value.incognito,
+        "spanning",
+        "Should have the expected incognito string");
+
+  normalized = yield ExtensionTestUtils.normalizeManifest({
+    "incognito": "split",
+  });
+
+  equal(normalized.error, undefined, "Should not have an error");
+  Assert.deepEqual(normalized.errors,
+                   ['Error processing incognito: Invalid enumeration value "split"'],
+                   "Should have the expected warning");
+  equal(normalized.value.incognito, null,
+        "Invalid incognito string should be omitted");
+});