Fix (nearly all) IWYU in fpdfskd/include/javascript/ headers.

fpdfsdk/include/javascript/JS_Define.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 _JS_DEFINE_H_
 #define _JS_DEFINE_H_
 
 #include "../jsapi/fxjs_v8.h"
 #include "resource.h"
 
-typedef v8::Value                       JSValue;
-typedef v8::Handle<v8::Object>  JSObject;
-typedef v8::Handle<v8::Object>  JSFXObject;
-
 #include "JS_Object.h"
 #include "JS_Value.h"
 
 struct JSConstSpec
 {
         const wchar_t* pName;
         double number;
         const wchar_t* string;
         FX_BYTE t; //0:double 1:str
 };
@@ skipping 439 matching lines @@
 #define VALUE_NAME_BOOLEAN              L"boolean"
 #define VALUE_NAME_DATE                 L"date"
 #define VALUE_NAME_OBJECT               L"object"
 #define VALUE_NAME_FXOBJ                L"fxobj"
 #define VALUE_NAME_NULL                 L"null"
 #define VALUE_NAME_UNDEFINED    L"undefined"
 
 FXJSVALUETYPE GET_VALUE_TYPE(v8::Handle<v8::Value> p);
 
 #endif //_JS_DEFINE_H_