Review and cleanup lint warnings.

fpdfsdk/src/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/include/fpdfxfa/fpdfxfa_util.h"
+
+#include <vector>
+
 #include "fpdfsdk/include/fsdk_define.h"
 #include "fpdfsdk/include/fsdk_mgr.h"
 
 std::vector<CFWL_TimerInfo*>* CXFA_FWLAdapterTimerMgr::s_TimerArray = nullptr;
 
 FWL_ERR CXFA_FWLAdapterTimerMgr::Start(IFWL_Timer* pTimer,
                                        FX_DWORD dwElapse,
                                        FWL_HTIMER& hTimer,
                                        FX_BOOL bImmediately) {
   if (!m_pEnv)
@@ skipping 28 matching lines @@
   if (!s_TimerArray)
     return;
 
   for (CFWL_TimerInfo* pInfo : *s_TimerArray) {
     if (pInfo->uIDEvent == idEvent) {
       pInfo->pTimer->Run(reinterpret_cast<FWL_HTIMER>(pInfo));
       break;
     }
   }
 }