Revert half of the changes from 137638 that are probably causing breakages in

chrome/browser/extensions/action_box_controller.cc

-// 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.
-
-#include "chrome/browser/extensions/action_box_controller.h"
-
-#include <algorithm>
-
-namespace extensions {
-
-// static
-void ActionBoxController::AddMissingActions(
-    const std::set<ExtensionAction*>& actions,
-    std::vector<ExtensionAction*>* out) {
-  for (std::set<ExtensionAction*>::const_iterator it = actions.begin();
-       it != actions.end(); ++it) {
-    ExtensionAction* action = (*it);
-    if (!std::count(out->begin(), out->end(), action))
-      out->push_back(action);
-  }
-}
-
-}  // namespace extensions