Move xfa/fwl/core to xfa/fwl.

xfa/fwl/cfwl_timerinfo.h

 // Copyright 2016 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 XFA_FWL_CORE_CFWL_TIMERINFO_H_
-#define XFA_FWL_CORE_CFWL_TIMERINFO_H_
+#ifndef XFA_FWL_CFWL_TIMERINFO_H_
+#define XFA_FWL_CFWL_TIMERINFO_H_
 
 #include "core/fxcrt/fx_system.h"
 
 class IFWL_AdapterTimerMgr;
 
 class CFWL_TimerInfo {
  public:
   explicit CFWL_TimerInfo(IFWL_AdapterTimerMgr* mgr) : m_pMgr(mgr) {
     ASSERT(mgr);
   }
   virtual ~CFWL_TimerInfo() {}
 
   void StopTimer();
 
  private:
   IFWL_AdapterTimerMgr* m_pMgr;  // Not owned.
 };
 
-#endif  // XFA_FWL_CORE_CFWL_TIMERINFO_H_
+#endif  // XFA_FWL_CFWL_TIMERINFO_H_