Remove FX_BOOL entirely.

fxjs/cfxjse_arguments.cpp

 // 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
 
 #include "fxjs/cfxjse_arguments.h"
 
 #include "fxjs/cfxjse_context.h"
 #include "fxjs/cfxjse_value.h"
 
 v8::Isolate* CFXJSE_Arguments::GetRuntime() const {
   return m_pRetValue->GetIsolate();
 }
 
 int32_t CFXJSE_Arguments::GetLength() const {
   return m_pInfo->Length();
 }
 
 std::unique_ptr<CFXJSE_Value> CFXJSE_Arguments::GetValue(int32_t index) const {
   std::unique_ptr<CFXJSE_Value> lpArgValue(
       new CFXJSE_Value(v8::Isolate::GetCurrent()));
   lpArgValue->ForceSetValue((*m_pInfo)[index]);
   return lpArgValue;
 }
 
-FX_BOOL CFXJSE_Arguments::GetBoolean(int32_t index) const {
+bool CFXJSE_Arguments::GetBoolean(int32_t index) const {
   return (*m_pInfo)[index]->BooleanValue();
 }
 
 int32_t CFXJSE_Arguments::GetInt32(int32_t index) const {
   return static_cast<int32_t>((*m_pInfo)[index]->NumberValue());
 }
 
 FX_FLOAT CFXJSE_Arguments::GetFloat(int32_t index) const {
   return static_cast<FX_FLOAT>((*m_pInfo)[index]->NumberValue());
 }
 
 CFX_ByteString CFXJSE_Arguments::GetUTF8String(int32_t index) const {
   v8::Local<v8::String> hString = (*m_pInfo)[index]->ToString();
   v8::String::Utf8Value szStringVal(hString);
   return CFX_ByteString(*szStringVal);
 }
 
 CFXJSE_HostObject* CFXJSE_Arguments::GetObject(int32_t index,
                                                CFXJSE_Class* pClass) const {
   v8::Local<v8::Value> hValue = (*m_pInfo)[index];
   ASSERT(!hValue.IsEmpty());
   if (!hValue->IsObject())
     return nullptr;
   return FXJSE_RetrieveObjectBinding(hValue.As<v8::Object>(), pClass);
 }
 
 CFXJSE_Value* CFXJSE_Arguments::GetReturnValue() {
   return m_pRetValue;
 }