Implement an infrastructure of Blink-in-JS

Source/bindings/v8/v8.gypi

 # 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.
 
 {
     'includes': [
         'custom/custom.gypi',
     ],
     'variables': {
         'bindings_v8_dir': '.',
         'bindings_v8_files': [
             '<@(bindings_v8_custom_files)',
             'ActiveDOMCallback.cpp',
             'ActiveDOMCallback.h',
             'ArrayValue.cpp',
             'ArrayValue.h',
+            'PrivateScriptController.cpp',
+            'PrivateScriptController.h',
             'BindingSecurity.cpp',
             'BindingSecurity.h',
             'CallbackPromiseAdapter.h',
             'CustomElementBinding.cpp',
             'CustomElementBinding.h',
             'CustomElementConstructorBuilder.cpp',
             'CustomElementConstructorBuilder.h',
             'CustomElementWrapper.cpp',
             'CustomElementWrapper.h',
             'DOMDataStore.cpp',
@@ skipping 121 matching lines @@
             'WorkerScriptController.cpp',
             'WorkerScriptController.h',
             'WorkerScriptDebugServer.cpp',
             'WorkerScriptDebugServer.h',
             'WrapperTypeInfo.h',
             'npruntime.cpp',
             'npruntime_impl.h',
             'npruntime_priv.h',
         ],
         'bindings_v8_unittest_files': [
+            'PrivateScriptTest.cpp',
             'IDBBindingUtilitiesTest.cpp',
             'ScriptPromiseTest.cpp',
         ],
     },
 }