Added a private chromeAuthPrivate API.

chrome/test/data/extensions/api_test/chrome_auth_private/enable_chrome_connector/cloud_print_success_tests.js

Index: chrome/test/data/extensions/api_test/chrome_auth_private/enable_chrome_connector/cloud_print_success_tests.js
diff --git a/chrome/test/data/extensions/api_test/chrome_auth_private/enable_chrome_connector/cloud_print_success_tests.js b/chrome/test/data/extensions/api_test/chrome_auth_private/enable_chrome_connector/cloud_print_success_tests.js
new file mode 100644
index 0000000000000000000000000000000000000000..62f92239b96aa5264ba72f683190a28b27bc7c93
--- /dev/null
+++ b/chrome/test/data/extensions/api_test/chrome_auth_private/enable_chrome_connector/cloud_print_success_tests.js
@@ -0,0 +1,22 @@
+// Copyright (c) 2011 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.
+
+
+var tests = [
+  function successfulSetCreds() {
+    var userEmail = 'foo@gmail.com';
+    var robotEmail = 'foorobot@googleusercontent.com';
+    var credentials = '1/23546efa54';
+    chrome.chromeAuthPrivate.setCloudPrintCredentials(
+        userEmail, robotEmail, credentials,
+        chrome.test.callbackPass(function(result) {
+           // In test mode, we expect the API to reflect the arguments back to
+           // us appended together.
+           chrome.test.assertNoLastError();
+           chrome.test.assertEq(result, userEmail + robotEmail + credentials);
+         }));
+  }
+];
+
+chrome.test.runTests(tests);