Refactor LauncherItemController and LauncherItemDelegate

ash/test/launcher_item_delegate_manager_test_api.h

+// Copyright 2013 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.
+
+#ifndef ASH_TEST_LAUNCHER_ITEM_DELEGATE_MANAGER_TEST_API_H_
+#define ASH_TEST_LAUNCHER_ITEM_DELEGATE_MANAGER_TEST_API_H_
+
+#include "base/basictypes.h"
+
+namespace ash {
+
+class LauncherItemDelegateManager;
+
+namespace test {
+
+// Accesses private methods from a LauncherItemDelegateManager for testing.
+class LauncherItemDelegateManagerTestAPI {
+ public:
+  explicit LauncherItemDelegateManagerTestAPI(
+      LauncherItemDelegateManager* manager);
+
+  // Clear all exsiting LauncherItemDelegate for test.
+  void RemoveAllLauncherItemDelegateForTest();
+
+ private:
+  LauncherItemDelegateManager* manager_;  // Not owned.
+
+  DISALLOW_COPY_AND_ASSIGN(LauncherItemDelegateManagerTestAPI);
+};
+
+}  // namespace test
+}  // namespace ash
+
+#endif  // ASH_TEST_LAUNCHER_ITEM_DELEGATE_MANAGER_TEST_API_H_