Extract permission alias info from PermissionsProvider

extensions/common/extensions_aliases.cc

+// Copyright 2016 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.
+
+#include "extensions/common/extensions_aliases.h"
+
+namespace extensions {
+
+std::vector<Alias> GetExtensionsPermissionAliases() {
+  // In alias constructor, first value is the alias name; second value is the
+  // real name. See also alias.h.
+  return {Alias("alwaysOnTopWindows", "app.window.alwaysOnTop"),
+          Alias("fullscreen", "app.window.fullscreen"),
+          Alias("overrideEscFullscreen", "app.window.fullscreen.overrideEsc"),
+          Alias("unlimited_storage", "unlimitedStorage")};
+}
+
+}  // namespace extensions