[Extensions] Make a chrome.developerPrivate.getExtensionsInfo function

chrome/browser/extensions/api/developer_private/developer_private_mangle.h

+// Copyright 2015 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 CHROME_BROWSER_EXTENSIONS_API_DEVELOPER_PRIVATE_DEVELOPER_PRIVATE_MANGLE_H_
+#define CHROME_BROWSER_EXTENSIONS_API_DEVELOPER_PRIVATE_DEVELOPER_PRIVATE_MANGLE_H_
+
+#include "base/memory/linked_ptr.h"
+
+namespace extensions {
+
+namespace api {
+namespace developer_private {
+struct ItemInfo;
+struct ExtensionInfo;
+}
+}
+
+namespace developer_private_mangle {
+
+// Converts a developer_private::ExtensionInfo into a
+// developer_private::ItemInfo for compatability with deprecated API
+// functions.
+linked_ptr<api::developer_private::ItemInfo> MangleExtensionInfo(
+    const api::developer_private::ExtensionInfo& info);
+
+}  // namespace developer_private_mangle
+}  // namespace extensions
+
+#endif  // CHROME_BROWSER_EXTENSIONS_API_DEVELOPER_PRIVATE_DEVELOPER_PRIVATE_MANGLE_H_