DIAL extension API skeleton.

chrome/test/data/extensions/api_test/dial/experimental/discovery.js

+// Copyright (c) 2012 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 discovery() {
+      var discoverNowShouldSucceed = function(result) {
+        if (result)
+          chrome.test.succeed();
+        else
+          chrome.test.fail();
+      };
+
+      var onDeviceList = function(deviceList) {
+        // Unused.
+      };
+
+      var discoverNowShouldFail = function(result) {
+        if (!result) {
+          chrome.test.succeed();
+          chrome.dial.onDeviceList.addListener(onDeviceList);
+          chrome.dial.discoverNow(discoverNowShouldSucceed);
+        } else {
+          chrome.test.fail();
+        }
+      };
+
+      chrome.dial.discoverNow(discoverNowShouldFail);
+    }
+  ]);
+};