Move xfa/fwl/core to xfa/fwl.

xfa/fwl/cfwl_messagekillfocus.cpp

Index: xfa/fwl/cfwl_messagekillfocus.cpp
diff --git a/xfa/fwl/cfwl_messagekillfocus.cpp b/xfa/fwl/cfwl_messagekillfocus.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..55247d1f2ec3257efd857f01fd6a30db8f311770
--- /dev/null
+++ b/xfa/fwl/cfwl_messagekillfocus.cpp
@@ -0,0 +1,24 @@
+// 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/cfwl_messagekillfocus.h"
+
+#include <memory>
+
+#include "third_party/base/ptr_util.h"
+
+CFWL_MessageKillFocus::CFWL_MessageKillFocus(CFWL_Widget* pSrcTarget)
+    : CFWL_MessageKillFocus(pSrcTarget, nullptr) {}
+
+CFWL_MessageKillFocus::CFWL_MessageKillFocus(CFWL_Widget* pSrcTarget,
+                                             CFWL_Widget* pDstTarget)
+    : CFWL_Message(CFWL_Message::Type::KillFocus, pSrcTarget, pDstTarget) {}
+
+CFWL_MessageKillFocus::~CFWL_MessageKillFocus() {}
+
+std::unique_ptr<CFWL_Message> CFWL_MessageKillFocus::Clone() {
+  return pdfium::MakeUnique<CFWL_MessageKillFocus>(*this);
+}