Remove foxitlib.h and foxitxfa.h and IWYU.

xfa/src/fxfa/src/app/xfa_ffdochandler.cpp

 // 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
 
-#include "xfa/src/foxitlib.h"
+#include "xfa/src/fxfa/src/app/xfa_ffdochandler.h"
+
 #include "xfa/src/fxfa/src/app/xfa_ffdoc.h"
-#include "xfa/src/fxfa/src/app/xfa_ffdochandler.h"
 #include "xfa/src/fxfa/src/common/xfa_script.h"
 
 CXFA_FFDocHandler::CXFA_FFDocHandler() {}
 CXFA_FFDocHandler::~CXFA_FFDocHandler() {}
 void CXFA_FFDocHandler::ReleaseDoc(IXFA_Doc* hDoc) {
   delete hDoc;  // virtual dtor.
 }
 IXFA_DocProvider* CXFA_FFDocHandler::GetDocProvider(IXFA_Doc* hDoc) {
   return static_cast<CXFA_FFDoc*>(hDoc)->GetDocProvider();
 }
@@ skipping 81 matching lines @@
   }
   IXFA_ScriptContext* pScriptContext = pXFADoc->GetScriptContext();
   if (!pScriptContext) {
     return FALSE;
   }
   return pScriptContext->RunScript(
       (XFA_SCRIPTLANGTYPE)eScriptType, wsScript, hRetValue,
       hThisObject ? (CXFA_Object*)FXJSE_Value_ToObject(hThisObject, NULL)
                   : NULL);
 }