Move xfa/fwl/core to xfa/fwl.

xfa/fwl/core/cfwl_msgkey.cpp

Index: xfa/fwl/core/cfwl_msgkey.cpp
diff --git a/xfa/fwl/core/cfwl_msgkey.cpp b/xfa/fwl/core/cfwl_msgkey.cpp
deleted file mode 100644
index 3eda29ab499cc5ef4a75a8641fc682d14e6cab4a..0000000000000000000000000000000000000000
--- a/xfa/fwl/core/cfwl_msgkey.cpp
+++ /dev/null
@@ -1,20 +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_msgkey.h"
-
-#include <memory>
-
-#include "third_party/base/ptr_util.h"
-
-CFWL_MsgKey::CFWL_MsgKey(CFWL_Widget* pSrcTarget, CFWL_Widget* pDstTarget)
-    : CFWL_Message(CFWL_Message::Type::Key, pSrcTarget, pDstTarget) {}
-
-CFWL_MsgKey::~CFWL_MsgKey() {}
-
-std::unique_ptr<CFWL_Message> CFWL_MsgKey::Clone() {
-  return pdfium::MakeUnique<CFWL_MsgKey>(*this);
-}