[Bindings] Remove V8HiddenValue

third_party/WebKit/Source/bindings/core/v8/V8HiddenValue.h

-// 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.
-
-#ifndef V8HiddenValue_h
-#define V8HiddenValue_h
-
-#include <memory>
-
-#include "bindings/core/v8/ScopedPersistent.h"
-#include "bindings/core/v8/ScriptPromiseProperties.h"
-#include "core/CoreExport.h"
-#include "platform/wtf/Allocator.h"
-#include "platform/wtf/PtrUtil.h"
-#include "v8/include/v8.h"
-
-namespace blink {
-
-class ScriptState;
-
-class CORE_EXPORT V8HiddenValue {
- public:
-  static v8::Local<v8::Value> GetHiddenValue(ScriptState*,
-                                             v8::Local<v8::Object>,
-                                             v8::Local<v8::String>);
-  static bool SetHiddenValue(ScriptState*,
-                             v8::Local<v8::Object>,
-                             v8::Local<v8::String>,
-                             v8::Local<v8::Value>);
-  static bool DeleteHiddenValue(ScriptState*,
-                                v8::Local<v8::Object>,
-                                v8::Local<v8::String>);
-};
-
-}  // namespace blink
-
-#endif  // V8HiddenValue_h