Move xfa/fwl/core to xfa/fwl.

xfa/fwl/core/cfwl_msgsetfocus.h

Index: xfa/fwl/core/cfwl_msgsetfocus.h
diff --git a/xfa/fwl/core/cfwl_msgsetfocus.h b/xfa/fwl/core/cfwl_msgsetfocus.h
deleted file mode 100644
index 628f7a6d6673f711971fde56b0e9c396b926b527..0000000000000000000000000000000000000000
--- a/xfa/fwl/core/cfwl_msgsetfocus.h
+++ /dev/null
@@ -1,23 +0,0 @@
-// 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_MSGSETFOCUS_H_
-#define XFA_FWL_CORE_CFWL_MSGSETFOCUS_H_
-
-#include <memory>
-
-#include "xfa/fwl/core/cfwl_message.h"
-
-class CFWL_MsgSetFocus : public CFWL_Message {
- public:
-  CFWL_MsgSetFocus(CFWL_Widget* pSrcTarget, CFWL_Widget* pDstTarget);
-  ~CFWL_MsgSetFocus() override;
-
-  // CFWL_Message
-  std::unique_ptr<CFWL_Message> Clone() override;
-};
-
-#endif  // XFA_FWL_CORE_CFWL_MSGSETFOCUS_H_