Convert //chrome/browser/ui from scoped_ptr to std::unique_ptr

chrome/browser/ui/extensions/extension_install_ui_factory.cc

 // Copyright 2014 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/ui/extensions/extension_install_ui_factory.h"
 
 #include "chrome/browser/ui/extensions/extension_install_ui_default.h"
 
 namespace extensions {
 
-scoped_ptr<ExtensionInstallUI> CreateExtensionInstallUI(
+std::unique_ptr<ExtensionInstallUI> CreateExtensionInstallUI(
     content::BrowserContext* context) {
-  return scoped_ptr<ExtensionInstallUI>(new ExtensionInstallUIDefault(context));
+  return std::unique_ptr<ExtensionInstallUI>(
+      new ExtensionInstallUIDefault(context));
 }
 
 }  // namespace extensions