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

fpdfsdk/include/javascript/JS_GlobalData.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_GLOBALDATA_H_
 #define _JS_GLOBALDATA_H_
 
+#include "../../../core/include/fxcrt/fx_basic.h"
+
 #define JS_GLOBALDATA_TYPE_NUMBER               0
 #define JS_GLOBALDATA_TYPE_BOOLEAN              1
 #define JS_GLOBALDATA_TYPE_STRING               2
 #define JS_GLOBALDATA_TYPE_OBJECT               3
 #define JS_GLOBALDATA_TYPE_NULL                 4
 
 class CJS_KeyValue;
-class CJS_GlobalVariableArray;
-class CJS_GlobalData_Element;
+class CPDFDoc_Environment;
 
 class CJS_GlobalVariableArray
 {
 public:
         CJS_GlobalVariableArray();
         virtual ~CJS_GlobalVariableArray();
 
         void                    Add(CJS_KeyValue* p);
         int                             Count() const;
         CJS_KeyValue*   GetAt(int index) const;
@@ skipping 58 matching lines @@
         void                                                            LoadFileBuffer(FX_LPCWSTR sFilePath, FX_LPBYTE& pBuffer, FX_INT32& nLength);
         void                                                            WriteFileBuffer(FX_LPCWSTR sFilePath, FX_LPCSTR pBuffer, FX_INT32 nLength);
         void                                                            MakeByteString(const CFX_ByteString& name, CJS_KeyValue* pData, CFX_BinaryBuf& sData);
 
 private:
         CFX_ArrayTemplate<CJS_GlobalData_Element*>      m_arrayGlobalData;
         CFX_WideString                                                          m_sFilePath;
 };
 
 #endif //_JS_GLOBALDATA_H_