Update the CrxInstaller and UnpackedInstaller to use the ExtensionInstallChecker

chrome/browser/extensions/extension_installer.cc

-// Copyright (c) 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.
-
-#include "chrome/browser/extensions/extension_installer.h"
-
-#include "base/bind.h"
-#include "chrome/browser/profiles/profile.h"
-#include "content/public/browser/browser_thread.h"
-#include "extensions/browser/extension_system.h"
-#include "extensions/browser/management_policy.h"
-
-namespace extensions {
-
-ExtensionInstaller::ExtensionInstaller(Profile* profile)
-    : requirements_checker_(new RequirementsChecker()),
-      profile_(profile),
-      weak_ptr_factory_(this) {
-}
-
-ExtensionInstaller::~ExtensionInstaller() {
-}
-
-void ExtensionInstaller::CheckRequirements(
-    const RequirementsCallback& callback) {
-  DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
-  requirements_checker_->Check(extension_, callback);
-}
-
-base::string16 ExtensionInstaller::CheckManagementPolicy() {
-  base::string16 error;
-  bool allowed = ExtensionSystem::Get(profile_)->management_policy()
-      ->UserMayLoad(extension_.get(), &error);
-  DCHECK(allowed || !error.empty());
-  return error;
-}
-
-}  // namespace extensions