Move xfa/src up to xfa/.

xfa/src/fwl/core/fwl_threadimp.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 XFA_SRC_FWL_CORE_FWL_THREADIMP_H_
-#define XFA_SRC_FWL_CORE_FWL_THREADIMP_H_
-
-#include "xfa/include/fwl/core/fwl_thread.h"  // For FWL_HTHREAD.
-
-class CFWL_NoteDriver;
-class IFWL_NoteDriver;
-
-class CFWL_ThreadImp {
- public:
-  virtual ~CFWL_ThreadImp() {}
-  IFWL_Thread* GetInterface() const { return m_pIface; }
-  virtual FWL_ERR Run(FWL_HTHREAD hThread);
-
- protected:
-  CFWL_ThreadImp(IFWL_Thread* pIface) : m_pIface(pIface) {}
-
- private:
-  IFWL_Thread* const m_pIface;
-};
-
-class CFWL_NoteThreadImp : public CFWL_ThreadImp {
- public:
-  CFWL_NoteThreadImp(IFWL_NoteThread* pIface);
-  virtual ~CFWL_NoteThreadImp();
-
-  FWL_ERR Run(FWL_HTHREAD hThread) override;
-  virtual IFWL_NoteDriver* GetNoteDriver();
-
- protected:
-  CFWL_NoteDriver* const m_pNoteDriver;
-};
-
-#endif  // XFA_SRC_FWL_CORE_FWL_THREADIMP_H_