Remove some FWL code.

xfa/fwl/lightwidget/cfwl_caret.h

Index: xfa/fwl/lightwidget/cfwl_caret.h
diff --git a/xfa/fwl/lightwidget/cfwl_caret.h b/xfa/fwl/lightwidget/cfwl_caret.h
deleted file mode 100644
index c806f2eb7385159e92e4642270394b2ce7e11b6e..0000000000000000000000000000000000000000
--- a/xfa/fwl/lightwidget/cfwl_caret.h
+++ /dev/null
@@ -1,28 +0,0 @@
-// Copyright 2014 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_LIGHTWIDGET_CFWL_CARET_H_
-#define XFA_FWL_LIGHTWIDGET_CFWL_CARET_H_
-
-#include "xfa/fwl/core/fwl_error.h"
-#include "xfa/fxgraphics/cfx_color.h"
-#include "xfa/fwl/lightwidget/cfwl_widget.h"
-
-class CFWL_Caret : public CFWL_Widget {
- public:
-  static CFWL_Caret* Create();
-  FWL_ERR Initialize(const CFWL_WidgetProperties* pProperties = NULL);
-  FWL_ERR ShowCaret(FX_BOOL bFlag = TRUE);
-  FWL_ERR GetFrequency(uint32_t& elapse);
-  FWL_ERR SetFrequency(uint32_t elapse);
-  FWL_ERR SetColor(CFX_Color crFill);
-
- protected:
-  CFWL_Caret();
-  virtual ~CFWL_Caret();
-};
-
-#endif  // XFA_FWL_LIGHTWIDGET_CFWL_CARET_H_