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

xfa/src/fwl/core/fwl_panelimp.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_panelimp.h"
+#include "xfa/src/fwl/core/fwl_panelimp.h"
 
 #include "xfa/include/fwl/core/fwl_content.h"
 #include "xfa/include/fwl/core/fwl_grid.h"
 #include "xfa/include/fwl/core/fwl_panel.h"
-#include "xfa/src/fwl/src/core/fwl_noteimp.h"
-#include "xfa/src/fwl/src/core/fwl_targetimp.h"
-#include "xfa/src/fwl/src/core/fwl_widgetimp.h"
-#include "xfa/src/fwl/src/core/fwl_widgetmgrimp.h"
+#include "xfa/src/fwl/core/fwl_noteimp.h"
+#include "xfa/src/fwl/core/fwl_targetimp.h"
+#include "xfa/src/fwl/core/fwl_widgetimp.h"
+#include "xfa/src/fwl/core/fwl_widgetmgrimp.h"
 
 // static
 IFWL_Panel* IFWL_Panel::Create(CFWL_WidgetImpProperties& properties,
                                IFWL_Widget* pOuter) {
   IFWL_Panel* pPanel = new IFWL_Panel;
   CFWL_PanelImp* pPanelImpl = new CFWL_PanelImp(properties, pOuter);
   pPanel->SetImpl(pPanelImpl);
   pPanelImpl->SetInterface(pPanel);
   return pPanel;
 }
@@ skipping 117 matching lines @@
 IFWL_CustomPanel::IFWL_CustomPanel() {}
 IFWL_Content* IFWL_CustomPanel::GetContent() {
   return static_cast<CFWL_CustomPanelImp*>(GetImpl())->GetContent();
 }
 FWL_ERR IFWL_CustomPanel::SetContent(IFWL_Content* pContent) {
   return static_cast<CFWL_CustomPanelImp*>(GetImpl())->SetContent(pContent);
 }
 FWL_ERR IFWL_CustomPanel::SetProxy(IFWL_Proxy* pProxy) {
   return static_cast<CFWL_CustomPanelImp*>(GetImpl())->SetProxy(pProxy);
 }