Move xfa/fwl/core to xfa/fwl.

xfa/fwl/cfwl_formproxy.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_FWL_CORE_CFWL_FORMPROXY_H_
-#define XFA_FWL_CORE_CFWL_FORMPROXY_H_
+#ifndef XFA_FWL_CFWL_FORMPROXY_H_
+#define XFA_FWL_CFWL_FORMPROXY_H_
 
 #include <memory>
 
-#include "xfa/fwl/core/cfwl_form.h"
+#include "xfa/fwl/cfwl_form.h"
 
 class CFWL_WidgetProperties;
 
 class CFWL_FormProxy : public CFWL_Form {
  public:
   CFWL_FormProxy(const CFWL_App* app,
                  std::unique_ptr<CFWL_WidgetProperties> properties,
                  CFWL_Widget* pOuter);
   ~CFWL_FormProxy() override;
 
   // CFWL_Widget
   FWL_Type GetClassID() const override;
   bool IsInstance(const CFX_WideStringC& wsClass) const override;
   void Update() override;
   void DrawWidget(CFX_Graphics* pGraphics, const CFX_Matrix* pMatrix) override;
   void OnProcessMessage(CFWL_Message* pMessage) override;
 };
 
-#endif  // XFA_FWL_CORE_CFWL_FORMPROXY_H_
+#endif  // XFA_FWL_CFWL_FORMPROXY_H_