Rename fxjse/ to fxjs/ update files to match class names.

fxjse/include/cfxjse_arguments.h

-// Copyright 2016 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 FXJSE_INCLUDE_CFXJSE_ARGUMENTS_H_
-#define FXJSE_INCLUDE_CFXJSE_ARGUMENTS_H_
-
-#include <memory>
-
-#include "fxjse/include/fxjse.h"
-
-class CFXJSE_Class;
-
-class CFXJSE_Arguments {
- public:
-  CFXJSE_Arguments(const v8::FunctionCallbackInfo<v8::Value>* pInfo,
-                   CFXJSE_Value* pRetValue)
-      : m_pInfo(pInfo), m_pRetValue(pRetValue) {}
-
-  v8::Isolate* GetRuntime() const;
-  int32_t GetLength() const;
-  std::unique_ptr<CFXJSE_Value> GetValue(int32_t index) const;
-  FX_BOOL GetBoolean(int32_t index) const;
-  int32_t GetInt32(int32_t index) const;
-  FX_FLOAT GetFloat(int32_t index) const;
-  CFX_ByteString GetUTF8String(int32_t index) const;
-  CFXJSE_HostObject* GetObject(int32_t index,
-                               CFXJSE_Class* pClass = nullptr) const;
-  CFXJSE_Value* GetReturnValue();
-
- private:
-  const v8::FunctionCallbackInfo<v8::Value>* m_pInfo;
-  CFXJSE_Value* m_pRetValue;
-};
-
-#endif  // FXJSE_INCLUDE_CFXJSE_ARGUMENTS_H_