Remove some FWL code.

xfa/fwl/lightwidget/cfwl_caret.cpp

Index: xfa/fwl/lightwidget/cfwl_caret.cpp
diff --git a/xfa/fwl/lightwidget/cfwl_caret.cpp b/xfa/fwl/lightwidget/cfwl_caret.cpp
deleted file mode 100644
index 7fea4f9e7745abe5c750132e20a51adc750590cf..0000000000000000000000000000000000000000
--- a/xfa/fwl/lightwidget/cfwl_caret.cpp
+++ /dev/null
@@ -1,55 +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
-
-#include "xfa/fwl/lightwidget/cfwl_caret.h"
-
-#include <memory>
-
-#include "xfa/fwl/basewidget/ifwl_caret.h"
-#include "xfa/fwl/core/fwl_targetimp.h"
-#include "xfa/fxgraphics/cfx_color.h"
-#include "xfa/fwl/lightwidget/cfwl_edit.h"
-
-CFWL_Caret* CFWL_Caret::Create() {
-  return new CFWL_Caret;
-}
-
-FWL_ERR CFWL_Caret::Initialize(const CFWL_WidgetProperties* pProperties) {
-  if (m_pIface)
-    return FWL_ERR_Indefinite;
-  if (pProperties) {
-    *m_pProperties = *pProperties;
-  }
-  std::unique_ptr<IFWL_Caret> pCaret(IFWL_Caret::Create(
-      m_pProperties->MakeWidgetImpProperties(nullptr), nullptr));
-  FWL_ERR ret = pCaret->Initialize();
-  if (ret != FWL_ERR_Succeeded) {
-    return ret;
-  }
-  m_pIface = pCaret.release();
-  CFWL_Widget::Initialize();
-  return FWL_ERR_Succeeded;
-}
-
-FWL_ERR CFWL_Caret::ShowCaret(FX_BOOL bFlag) {
-  return static_cast<IFWL_Caret*>(m_pIface)->ShowCaret(bFlag);
-}
-
-FWL_ERR CFWL_Caret::GetFrequency(uint32_t& elapse) {
-  return static_cast<IFWL_Caret*>(m_pIface)->GetFrequency(elapse);
-}
-
-FWL_ERR CFWL_Caret::SetFrequency(uint32_t elapse) {
-  return static_cast<IFWL_Caret*>(m_pIface)->SetFrequency(elapse);
-}
-
-FWL_ERR CFWL_Caret::SetColor(CFX_Color crFill) {
-  return static_cast<IFWL_Caret*>(m_pIface)->SetColor(crFill);
-}
-
-CFWL_Caret::CFWL_Caret() {}
-
-CFWL_Caret::~CFWL_Caret() {}