Rename fpdfsdk/fpdfxfa files to match contents

fpdfsdk/fpdfxfa/fpdfxfa_util.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 "fpdfsdk/fpdfxfa/fpdfxfa_util.h"
-
-#include <vector>
-
-#include "fpdfsdk/cpdfsdk_environment.h"
-#include "fpdfsdk/fsdk_define.h"
-
-std::vector<CFWL_TimerInfo*>* CXFA_FWLAdapterTimerMgr::s_TimerArray = nullptr;
-
-FWL_Error CXFA_FWLAdapterTimerMgr::Start(IFWL_Timer* pTimer,
-                                         uint32_t dwElapse,
-                                         bool bImmediately,
-                                         IFWL_TimerInfo** pTimerInfo) {
-  if (!m_pEnv)
-    return FWL_Error::Indefinite;
-
-  int32_t id_event = m_pEnv->SetTimer(dwElapse, TimerProc);
-  if (!s_TimerArray)
-    s_TimerArray = new std::vector<CFWL_TimerInfo*>;
-
-  s_TimerArray->push_back(new CFWL_TimerInfo(id_event, pTimer));
-  *pTimerInfo = s_TimerArray->back();
-  return FWL_Error::Succeeded;
-}
-
-FWL_Error CXFA_FWLAdapterTimerMgr::Stop(IFWL_TimerInfo* pTimerInfo) {
-  if (!pTimerInfo || !m_pEnv)
-    return FWL_Error::Indefinite;
-
-  CFWL_TimerInfo* pInfo = static_cast<CFWL_TimerInfo*>(pTimerInfo);
-  m_pEnv->KillTimer(pInfo->idEvent);
-  if (s_TimerArray) {
-    auto it = std::find(s_TimerArray->begin(), s_TimerArray->end(), pInfo);
-    if (it != s_TimerArray->end()) {
-      s_TimerArray->erase(it);
-      delete pInfo;
-    }
-  }
-  return FWL_Error::Succeeded;
-}
-
-// static
-void CXFA_FWLAdapterTimerMgr::TimerProc(int32_t idEvent) {
-  if (!s_TimerArray)
-    return;
-
-  for (CFWL_TimerInfo* pInfo : *s_TimerArray) {
-    if (pInfo->idEvent == idEvent) {
-      pInfo->pTimer->Run(pInfo);
-      break;
-    }
-  }
-}