Added function to get list of networks with prefetched passwords.

chrome/test/data/extensions/api_test/gcd_private/api/wifi_password.js

Index: chrome/test/data/extensions/api_test/gcd_private/api/wifi_password.js
diff --git a/chrome/test/data/extensions/api_test/gcd_private/api/wifi_password.js b/chrome/test/data/extensions/api_test/gcd_private/api/wifi_password.js
new file mode 100644
index 0000000000000000000000000000000000000000..ad12257b99c26a874e222813c29cf9880ddbe176
--- /dev/null
+++ b/chrome/test/data/extensions/api_test/gcd_private/api/wifi_password.js
@@ -0,0 +1,35 @@
+// Copyright 2014 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+onload = function() {
+  chrome.test.runTests([
+    function wifiPassword() {
+      var succeeded = false;
+      var failed = false;
+
+      function expectResult(expectedResult, result) {
+        chrome.test.assertEq(expectedResult, result);
+
+        if (expectedResult) succeeded = true;
+        else failed = true;
+
+        if (succeeded && failed) {
+          chrome.gcdPrivate.getPrefetchedWifiNameList(onWifiList);
+        }
+      }
+
+      function onWifiList(list) {
+        chrome.test.assertEq(["SuccessNetwork"], list);
+
+        chrome.test.notifyPass();
+      }
+
+      chrome.gcdPrivate.prefetchWifiPassword("SuccessNetwork",
+                                             expectResult.bind(null, true));
+
+      chrome.gcdPrivate.prefetchWifiPassword("FailureNetwork",
+                                             expectResult.bind(null, false));
+    }
+  ]);
+};