Remove XFA_HFM2JSCONTEXT.

xfa/fxfa/fm2js/xfa_fm2jsapi.h

-// Copyright 2014 PDFium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
-
-#ifndef XFA_FXFA_FM2JS_XFA_FM2JSAPI_H_
-#define XFA_FXFA_FM2JS_XFA_FM2JSAPI_H_
-
-#include "core/fxcrt/include/fx_basic.h"
-#include "xfa/fxfa/parser/xfa_document.h"
-#include "xfa/fxjse/include/fxjse.h"
-
-#define FOXIT_XFA_FM2JS_FORMCALC_RUNTIME "foxit_xfa_formcalc_runtime"
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-typedef struct XFA_HFM2JSCONTEXT_ { void** pData; } * XFA_HFM2JSCONTEXT;
-int32_t XFA_FM2JS_Translate(const CFX_WideStringC& wsFormcalc,
-                            CFX_WideTextBuf& wsJavascript,
-                            CFX_WideString& wsError);
-XFA_HFM2JSCONTEXT XFA_FM2JS_ContextCreate(v8::Isolate* pScriptIsolate,
-                                          CFXJSE_Context* pScriptContext,
-                                          CXFA_Document* pDocument);
-void XFA_FM2JS_GlobalPropertyGetter(XFA_HFM2JSCONTEXT hFM2JSContext,
-                                    CFXJSE_Value* pValue);
-void XFA_FM2JS_ContextRelease(XFA_HFM2JSCONTEXT hFM2JSContext);
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif  // XFA_FXFA_FM2JS_XFA_FM2JSAPI_H_