Move xfa/fwl/core to xfa/fwl.

xfa/fwl/cfwl_eventtextchanged.h

Index: xfa/fwl/cfwl_eventtextchanged.h
diff --git a/xfa/fwl/cfwl_eventtextchanged.h b/xfa/fwl/cfwl_eventtextchanged.h
new file mode 100644
index 0000000000000000000000000000000000000000..8ae27627b54696c1002da5fcc88657c3d8e686ff
--- /dev/null
+++ b/xfa/fwl/cfwl_eventtextchanged.h
@@ -0,0 +1,20 @@
+// 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_CFWL_EVENTTEXTCHANGED_H_
+#define XFA_FWL_CFWL_EVENTTEXTCHANGED_H_
+
+#include "xfa/fwl/cfwl_event.h"
+
+class CFWL_EventTextChanged : public CFWL_Event {
+ public:
+  explicit CFWL_EventTextChanged(CFWL_Widget* pSrcTarget);
+  ~CFWL_EventTextChanged() override;
+
+  CFX_WideString wsPrevText;
+};
+
+#endif  // XFA_FWL_CFWL_EVENTTEXTCHANGED_H_