First few API implementation of AppsDebuggerPrivate.

chrome/test/data/extensions/api_test/developer/test/common.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.
+
+var assertEq = chrome.test.assertEq;
+var assertTrue = chrome.test.assertTrue;
+var fail = chrome.test.fail;
+var callback = chrome.test.callback;
+
+function getItemNamed(list, name) {
+  for (var i = 0; i < list.length; i++) {
+    if (list[i].name == name) {
+      return list[i];
+    }
+  }
+  fail("didn't find item with name: " + name);
+  return null;
+}
+
+// Verifies that the item's name, enabled, and type properties match |name|,
+// |enabled|, and |type|, and checks against any additional name/value
+// properties from |additional_properties|.
+function checkItem(item, name, enabled, type, additional_properties) {
+  assertTrue(item !== null);
+  assertEq(name, item.name);
+  assertEq(type, item.type);
+  assertEq(enabled, item.enabled);
+
+  for (var propname in additional_properties) {
+    var value = additional_properties[propname];
+    if (typeof value === 'string')
+      value = value.replace("<ID>", item.id);
+    assertTrue(propname in item);
+    assertEq(value, item[propname]);
+  }
+}
+
+// Gets an extension/app with |name| in |list|, verifies that its enabled
+// and type properties match |enabled| and |type|, and checks against any
+// additional name/value properties from |additional_properties|.
+function checkItemInList(list, name, enabled, type, additional_properties) {
+  var item = getItemNamed(list, name);
+  checkItem(item, name, enabled, type, additional_properties);
+}