Rename fpdfsdk/fpdfxfa files to match contents

fpdfsdk/fpdfxfa/cxfa_fwladaptertimermgr.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 FPDFSDK_FPDFXFA_FPDFXFA_UTIL_H_
-#define FPDFSDK_FPDFXFA_FPDFXFA_UTIL_H_
+#ifndef FPDFSDK_FPDFXFA_CXFA_FWLADAPTERTIMERMGR_H_
+#define FPDFSDK_FPDFXFA_CXFA_FWLADAPTERTIMERMGR_H_
 
 #include <vector>
 
-#include "fpdfsdk/fpdfxfa/fpdfxfa_doc.h"
+#include "fpdfsdk/fpdfxfa/cpdfxfa_document.h"
 #include "xfa/fwl/core/ifwl_adaptertimermgr.h"
 
 #define JS_STR_VIEWERTYPE_STANDARD L"Exchange"
 #define JS_STR_LANGUANGE L"ENU"
 #define JS_STR_VIEWERVARIATION L"Full"
 #define JS_STR_VIEWERVERSION_XFA L"11"
 
 struct CFWL_TimerInfo;
 
 class CXFA_FWLAdapterTimerMgr : public IFWL_AdapterTimerMgr {
@@ skipping 15 matching lines @@
 
 struct CFWL_TimerInfo : public IFWL_TimerInfo {
   CFWL_TimerInfo() : pTimer(nullptr) {}
   CFWL_TimerInfo(int32_t event, IFWL_Timer* timer)
       : idEvent(event), pTimer(timer) {}
 
   int32_t idEvent;
   IFWL_Timer* pTimer;
 };
 
-#endif  // FPDFSDK_FPDFXFA_FPDFXFA_UTIL_H_
+#endif  // FPDFSDK_FPDFXFA_CXFA_FWLADAPTERTIMERMGR_H_