Replace extensions::ScopedPersistent with v8::UniquePersistent.

extensions/extensions.gypi

 # 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.
 
 {
   'variables': {
     'extensions_common_constants_sources': [
       'common/constants.cc',
       'common/constants.h',
     ],
@@ skipping 916 matching lines @@
       'renderer/resources/guest_view/surface_view.js',
       'renderer/resources/guest_view/web_view.js',
       'renderer/resources/guest_view/web_view_events.js',
       'renderer/resources/guest_view/web_view_experimental.js',
       'renderer/resources/web_request_custom_bindings.js',
       'renderer/resources/web_request_internal_custom_bindings.js',
       'renderer/runtime_custom_bindings.cc',
       'renderer/runtime_custom_bindings.h',
       'renderer/safe_builtins.cc',
       'renderer/safe_builtins.h',
-      'renderer/scoped_persistent.h',
       'renderer/script_context.cc',
       'renderer/script_context.h',
       'renderer/script_context_set.cc',
       'renderer/script_context_set.h',
       'renderer/script_injection_callback.cc',
       'renderer/script_injection_callback.h',
       'renderer/script_injection.cc',
       'renderer/script_injection.h',
       'renderer/script_injection_manager.cc',
       'renderer/script_injection_manager.h',
@@ skipping 78 matching lines @@
       'test/result_catcher.h',
       'test/test_content_utility_client.cc',
       'test/test_content_utility_client.h',
       'test/test_extensions_client.cc',
       'test/test_extensions_client.h',
       'test/test_permission_message_provider.cc',
       'test/test_permission_message_provider.h',
     ],
   },
 }