Move xfa/fwl/core to xfa/fwl.

xfa/fwl/core/cfwl_msgsetfocus.cpp

Index: xfa/fwl/core/cfwl_msgsetfocus.cpp
diff --git a/xfa/fwl/core/cfwl_msgsetfocus.cpp b/xfa/fwl/core/cfwl_msgsetfocus.cpp
deleted file mode 100644
index 82e9610b150ab2f71e7a09c8342f6bff0a9a9c3a..0000000000000000000000000000000000000000
--- a/xfa/fwl/core/cfwl_msgsetfocus.cpp
+++ /dev/null
@@ -1,21 +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
-
-#include "xfa/fwl/core/cfwl_msgsetfocus.h"
-
-#include <memory>
-
-#include "third_party/base/ptr_util.h"
-
-CFWL_MsgSetFocus::CFWL_MsgSetFocus(CFWL_Widget* pSrcTarget,
-                                   CFWL_Widget* pDstTarget)
-    : CFWL_Message(CFWL_Message::Type::SetFocus, pSrcTarget, pDstTarget) {}
-
-CFWL_MsgSetFocus::~CFWL_MsgSetFocus() {}
-
-std::unique_ptr<CFWL_Message> CFWL_MsgSetFocus::Clone() {
-  return pdfium::MakeUnique<CFWL_MsgSetFocus>(*this);
-}