Remove xfa/src/fwl/src and move code up a level.

xfa/src/fwl/core/fwl_threadimp.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 "xfa/src/fwl/src/core/fwl_threadimp.h"
+#include "xfa/src/fwl/core/fwl_threadimp.h"
 
-#include "xfa/src/fwl/src/core/fwl_appimp.h"
-#include "xfa/src/fwl/src/core/fwl_noteimp.h"
-#include "xfa/src/fwl/src/core/fwl_targetimp.h"
+#include "xfa/src/fwl/core/fwl_appimp.h"
+#include "xfa/src/fwl/core/fwl_noteimp.h"
+#include "xfa/src/fwl/core/fwl_targetimp.h"
 
 void IFWL_Thread::Release() {
   delete m_pImpl;
 }
 FWL_ERR IFWL_Thread::Run(FWL_HTHREAD hThread) {
   return m_pImpl->Run(hThread);
 }
 IFWL_NoteDriver* IFWL_NoteThread::GetNoteDriver() {
   return static_cast<CFWL_NoteThreadImp*>(GetImpl())->GetNoteDriver();
 }
 
 FWL_ERR CFWL_ThreadImp::Run(FWL_HTHREAD hThread) {
   return FWL_ERR_Succeeded;
 }
 CFWL_NoteThreadImp::CFWL_NoteThreadImp(IFWL_NoteThread* pIface)
     : CFWL_ThreadImp(pIface), m_pNoteDriver(new CFWL_NoteDriver) {}
 CFWL_NoteThreadImp::~CFWL_NoteThreadImp() {
   delete m_pNoteDriver;
 }
 FWL_ERR CFWL_NoteThreadImp::Run(FWL_HTHREAD hThread) {
   if (!m_pNoteDriver)
     return FWL_ERR_Indefinite;
   return m_pNoteDriver->Run();
 }
 IFWL_NoteDriver* CFWL_NoteThreadImp::GetNoteDriver() {
   return m_pNoteDriver;
 }